For the experimental series, the researchers produced biochar through controlled pyrolysis of sisal fibers and incorporated the particles into an epoxy matrix as filler. They then made five laminates containing zero, one, two, three or four layers of sisal mat using the hand lay-up method. Mechanical performance improved incrementally as the number of mat layers increased, with the three-layer formulation recording the highest reported values. The available abstract does not provide numerical results for all five formulations, so the size of the improvement between adjacent samples cannot be determined from the supplied evidence.

The three-layer composite’s elongation value of 5.50% was reported alongside its tensile and flexural strengths, but the abstract does not describe the deformation sequence, failure mode or test conditions. It likewise does not provide individual measurements, error bars or other statistical measures of variation. The study therefore establishes the strongest reported result within this laboratory series, but the supplied material does not show how reproducible that result would be across larger batches, different processing conditions or service environments.

Physical-property measurements showed density rising from 1.10 to 1.31 g/cm3 across the tested material series. At the same time, thermal conductivity decreased from 1.30 to 1.16 W/m K, which the researchers described as improved insulation. These changes were measured properties of the composites, not evidence of a quantified trade-off between reinforcement and heat transfer. The abstract also does not identify which individual formulation produced either endpoint, report measurement uncertainty or compare the thermal performance with conventional fiber-reinforced epoxy systems.

Scanning electron microscopy showed that the sisal-derived biochar was dispersed homogeneously and that adhesion between the sisal fiber and epoxy matrix was strong. The supplied source does not support additional conclusions about load transfer, interfacial defects or the causes of the measured mechanical behavior. By combining sisal fiber mats with particles made from the same plant fiber, the researchers developed a hybrid composite aimed at improving strength and thermal behavior while retaining a sustainability objective. However, the abstract reports no lifecycle assessment, comparison with other composite materials, recycling test or long-term durability measurement, so it does not demonstrate an end-to-end environmental advantage or suitability for a finished engineering structure.

Subject of Research: Laboratory characterization of sisal-fiber and sisal-biochar reinforced epoxy laminates

Article Title: Development and characterization of sustainable hybrid epoxy biocomposites reinforced with sisal fiber mats and sisal-derived biochar particles

Article References: Arunraja, K. M., Lavanya, R., Arunkumar, S., & Senthilkumar, V. (2026). Development and characterization of sustainable hybrid epoxy biocomposites reinforced with sisal fiber mats and sisal-derived biochar particles. Journal of Materials Science. https://doi.org/10.1007/s10853-026-13918-y

Image Credits: AI Generated

DOI: 10.1007/s10853-026-13918-y

Keywords: sisal fiber, biochar, epoxy composite, biocomposites, tensile strength, flexural strength, thermal conductivity, scanning electron microscopy, sustainable materials, Development, characterization, sustainable

The researchers systematically investigated the mechanical, tribological, swelling and in vitro degradation behavior of the reinforced materials as hydroxyapatite content varied. A different formulation, PMH3 containing 5 vol.% hydroxyapatite, gave the most favorable measured tribological and degradation results in the abstract. It recorded the lowest specific wear rate, 0.02 mm3/Nm, and coefficient of friction of 0.30, together with the highest swelling and degradation values at week 4: 21.73% and 11.37%, respectively. The abstract associates these observations with increased ceramic content, improved surface hardness and enhanced bioactivity, but the available evidence does not establish the mechanisms responsible for the measured differences.

The reported results show a trade-off between mechanical performance and the tribological and in vitro degradation measurements rather than a single formulation that was best across every tested property. The authors attribute PMH2’s mechanical results to a synergistic interaction between well-dispersed hydroxyapatite nanoparticles and microfibers, which they associate with interfacial bonding, stress transfer and crack-pinning mechanisms while preserving matrix continuity. They describe the hybrid reinforcement as effectively tailoring the composites’ strength, surface durability and biodegradation characteristics and as making the materials promising candidates for load-bearing and bioresorbable biomedical uses.

This evidence comes from a materials-testing study rather than a review, protocol, simulation, animal experiment or human clinical study. The supplied source provides only the article abstract and does not report the full methods, statistical uncertainty, biological assays or thermal-performance results, despite thermal performance appearing in the original title. The findings therefore apply to the tested laboratory formulations and their measured mechanical, wear, friction, swelling and four-week in vitro degradation outcomes; they do not establish performance in patients or in vivo safety and effectiveness.

Subject of Research: Laboratory evaluation of mechanical, tribological, swelling and in vitro degradation properties of reinforced PLA biocomposites

Article Title: Mechanical, biological, and thermal performance of fused deposition modeled PLA biocomposites reinforced with sugar-beet-derived hydroxyapatite nanofillers and Montrichardia linifera microfibers

Article References: Jayabalakrishnan, D., Gobu, N., Manoj Kumar, S., & Uvaraja, V. C. (2026). Mechanical, biological, and thermal performance of fused deposition modeled PLA biocomposites reinforced with sugar-beet-derived hydroxyapatite nanofillers and Montrichardia linifera microfibers. Journal of Materials Science. https://doi.org/10.1007/s10853-026-13904-4

Image Credits: AI Generated

DOI: 10.1007/s10853-026-13904-4

Keywords: polylactic acid, fused deposition modeling, hydroxyapatite nanoparticles, Montrichardia linifera, biocomposites, mechanical properties, tribology, in vitro degradation, swelling, materials science, Mechanical, biological

Hemp shives, the woody core of the hemp stem left over after bast fibers are harvested, are an attractive raw material. They are lightweight, highly porous, and offer thermal conductivity around 0.048 W/m·K, making them excellent candidates for insulation panels. When bonded with gelatinized potato starch, hemp-shive composites have previously achieved thermal conductivities in the range of 0.06 to 0.07 W/m·K and impressive moisture-buffering values above 2.6 g/(m²·%RH). But the same porosity that makes them good insulators also makes them vulnerable. Water seeps into the open pore network, the hydrophilic starch binder swells, and over time the material can lose dimensional stability, mechanical integrity, and resistance to biological growth.

Earlier attempts to fix this weakness have relied on thermal modification of fibers, silane treatments, hot-water extraction, or synthetic hydrophobic coatings. These approaches work, but they add processing steps, energy demands, costs, and sometimes environmentally questionable chemistry. The new study takes a different route: instead of chemically altering the plant material, the researchers simply dispersed finely ground natural calcium carbonate throughout the matrix. The mineral powder, milled from Champagne-region limestone and composed of 94.6 percent calcium carbonate, was treated not as a passive filler but as a functional additive that reshapes the composite’s internal architecture.

Because the performance of such composites depends on several competing variables, the team avoided trial-and-error formulation. They applied Response Surface Methodology using a Central Composite Design, varying two parameters, the starch-to-fiber ratio and the calcium-carbonate-to-fiber ratio, across eleven experimental runs including replicated center points. Four responses were tracked simultaneously: bulk density, thermal conductivity, water absorption, and compressive strength. Quadratic regression models fitted to the data achieved coefficients of determination between 0.83 and 0.94, and analysis of variance confirmed that both factors and their interaction significantly shaped every property measured.

The models revealed a fascinating tug-of-war inside the material. Increasing starch raised water uptake, as expected from its hydroxyl-rich chemistry, but calcium carbonate pushed hard in the opposite direction, blocking capillary pathways and reducing the accessible internal surface. A significant negative interaction term showed that the mineral partially counteracts the binder’s hydrophilic tendency. Meanwhile, both components boosted compressive strength, with starch dominating through inter-particle bonding and calcium carbonate acting as a micro-reinforcement that stiffens the matrix and fills residual micropores. Density and thermal conductivity rose moderately with both additives, a predictable consequence of replacing trapped air with solid matter.

Multi-objective optimization using desirability functions converged on a formulation with a starch-to-fiber ratio of 0.30 and a calcium-carbonate-to-fiber ratio of 0.39. Validation experiments matched the predictions closely, with individual errors of 0.93 to 6.46 percent and an average deviation of just 3.72 percent, yielding a global desirability of 80 percent. The optimized composite reached a bulk density of 221 kg/m³, a thermal conductivity of 0.056 W/m·K, water absorption of 22 kg/m², and a compressive strength of 0.68 MPa, a compelling balance of insulation, strength, and moisture resistance.

Microscopy and porosimetry explained why the formulation works so well. Scanning electron micrographs of the reference material showed a heterogeneous, poorly bonded structure with large voids and smooth, uncoated hemp particles. In the optimized composite, calcium carbonate microspheres were embedded throughout the matrix, the binder film became continuous and evenly distributed, and fiber-matrix interfaces appeared far more cohesive. Mercury intrusion porosimetry quantified the transformation: total intrusion volume fell from 2.635 to 1.577 mL/g, total porosity dropped from 73.5 to 66.0 percent, and the median volumetric pore radius shrank from 0.452 to 0.401 micrometers. Ultrasonic pulse velocity nearly doubled, rising from 273 to 446 m/s, confirming dramatically improved internal cohesion.

The hydric results were equally striking. Capillary water absorption at long exposure times fell by roughly 29 percent compared with the references, from more than 30 kg/m² to 22 kg/m², and the wetting front penetrated only about 5 centimeters into the optimized panel. Surface wettability improved as well: the initial water contact angle climbed from around 50 to 54 degrees for the references to 87.26 degrees for the optimized composite, and the starch-calcium-carbonate binder gel itself showed a higher contact angle than pure starch gel. Crucially, the material did not become a vapor barrier. Water vapor permeability remained in the same range as other plant-fiber insulators, and the moisture buffer value actually reached the classification of excellent, meaning the wall material can still absorb and release humidity to regulate indoor air, while resisting liquid water ingress.

Acoustic and thermal stability tests rounded out the picture. Sound absorption curves for all formulations showed a characteristic peak near 1000 Hz, and the weighted absorption coefficient slightly improved from 0.30 to 0.36 with the mineral addition, indicating that pore refinement did not destroy the interconnected network responsible for acoustic dissipation. Thermogravimetric analysis showed the optimized composite retained 37.1 percent residual mass at 600 °C, compared with under 21 percent for the references, thanks to the mineral fraction and the endothermic decarbonation of calcium carbonate near 770 °C. Infrared spectroscopy confirmed the diagnostic carbonate bands in the optimized sample and suggested interfacial interactions, possibly hydrogen bonding, between the mineral surface and the hydroxyl-rich organic matrix.

The broader significance is that a mineral available almost anywhere, requiring no chemical synthesis, can deliver durability improvements that previously demanded elaborate surface treatments. The researchers caution that long-term service performance, including freeze-thaw cycling, wet-dry aging, biological attack, and fire behavior, still requires dedicated testing, and a full life-cycle assessment remains to be done. But the demonstration that ground limestone can simultaneously strengthen a hemp-starch insulation panel, cut its water uptake by nearly a third, preserve its breathability and moisture buffering, and even modestly improve its acoustic and thermal stability marks a meaningful step toward insulation materials that store carbon, breathe with the building, and survive decades of real-world weather.

Subject of Research: Multi-objective optimization of hemp-shive and starch biocomposites reinforced with natural calcium carbonate for moisture-resistant building insulation

Article Title: Natural CaCO₃ improves the moisture resistance and mechanical performance of hemp-starch biocomposites: A multi-objective optimization study

Article References: Balti, S., Maalouf, C., Moussa, T., Bliard, C., Lachi, M., Rousse, C., Alsedeh, O., Vazquez, P., Bogard, F., & Polidori, G. (2026). Natural CaCO₃ improves the moisture resistance and mechanical performance of hemp-starch biocomposites: A multi-objective optimization study. Case Studies in Construction Materials, 25, Article e06574. https://doi.org/10.1016/j.cscm.2026.e06574

Image Credits: AI Generated

DOI: 10.1016/j.cscm.2026.e06574

Keywords: hemp shives, calcium carbonate, potato starch, bio-based insulation, response surface methodology, moisture resistance, thermal conductivity, compressive strength, porosity, moisture buffering, sustainable construction, biocomposites

The appeal of natural fiber reinforcements lies in a combination of properties that synthetic alternatives struggle to match. Plant fibers offer a high strength-to-weight ratio, low density, low cost, and renewability, making them attractive for industries under pressure to reduce their environmental footprint. Stem-derived fibers are particularly interesting because of their high cellulose content, which directly contributes to load-bearing capacity in polymer composites. Grape stems, belonging to the Vitaceae family, contain roughly 37 to 42 percent cellulose, while bottle gourd stems are even richer, at approximately 60 to 65 percent. The research team exploited both: chopped grape stem fibers served as the primary structural reinforcement, while cellulose particles extracted from bottle gourd stems acted as a secondary filler designed to plug gaps in the microstructure and enhance thermal and fire performance.

Preparing the reinforcements required a sequence of well-established but carefully controlled chemical processes. Grape stems were first cleaned and immersed in water for six days to allow natural microbial retting, a process in which microorganisms break down lignin and pectin, the sticky compounds binding the fiber bundles together. The softened tissue was then mechanically processed to release the fibers, which were dried at 120 degrees Celsius for two hours and chopped into lengths of roughly five to eight millimeters. The bottle gourd stems followed a more elaborate route: after four days of water soaking and milling, the ground material was treated in a heated alkaline bath of 3.5 weight percent sodium hydroxide at 90 degrees Celsius to strip out lignin and hemicellulose, then hydrolyzed in 2.5 normal hydrochloric acid at 80 degrees Celsius, and finally bleached with 1.5 weight percent hydrogen peroxide to remove residual lignin. Optical microscopy of the resulting cellulose revealed granular, irregularly shaped particles of roughly 50 micrometers, consistent with microcrystalline cellulose.

A critical step in making these natural materials work inside a hydrophobic polymer was silane surface modification. Both the chopped fibers and the cellulose particles were immersed for two hours in a solution of 3-aminopropyltrimethoxysilane, or 3-APTMS, at one weight percent in a 90:10 ethanol-water mixture adjusted to pH 4 with acetic acid. The chemistry here is elegant: during treatment, silanol groups formed on the silane molecule condense with the hydroxyl groups on the cellulose surfaces of the fibers, creating strong covalent silicon-oxygen-cellulose bonds. Meanwhile, the amine end of the silanized reinforcement reacts covalently with the epoxy rings of the polymer matrix during curing. This dual bonding mechanism bridges the naturally incompatible hydrophilic fiber and hydrophobic resin, dramatically improving interfacial adhesion, stress transfer, and dispersion while suppressing the agglomeration that plagues untreated fillers.

The composites themselves were fabricated by a manual layup method. Epoxy resin LY556 and hardener HY951 were mixed at a 10:1 weight ratio and stirred at 500 revolutions per minute, after which the silane-treated fibers and cellulose were gradually added and blended for another fifteen minutes. The mixture was cast into a steel mold coated with release agent, cured for twenty-four hours at room temperature, and post-cured at 115 degrees Celsius for two hours to complete the polymer network. The researchers produced a series of formulations containing a fixed 30 volume percent of chopped grape stem fiber with cellulose contents ranging from 1 to 9 volume percent, alongside a fiber-only composite and a neat epoxy reference, and then subjected all of them to a battery of standardized tests covering tensile, flexural, impact, and hardness behavior, dry sliding wear, flammability, and thermal conductivity.

The mechanical results revealed a clear optimum. Neat epoxy was the weakest material across the board, and adding silane-treated fiber alone lifted tensile strength by 36 percent, flexural strength by 9.4 percent, impact energy by 15.7 percent, and hardness by 7.5 percent. Introducing cellulose pushed performance further: from 1 to 5 volume percent filler, properties climbed steadily, peaking in the BFF3 composite at a tensile strength of 137.6 megapascals, a flexural strength of 157.6 megapascals, an impact energy of 3.82 joules, and a 16.4 percent hardness gain over the fiber-only material. Beyond that point, however, the trend reversed. At 7 and 9 volume percent cellulose, tensile, flexural, and impact strength all declined, a classic signature of filler agglomeration, inefficient stress transfer, and matrix discontinuity at high loading. Hardness alone continued to rise, reaching 99 Shore D at 9 volume percent, thanks to denser packing and greater resistance to surface deformation.

Scanning electron microscopy of fractured specimens explained these outcomes in vivid detail. The neat epoxy reference showed numerous air pockets that acted as structural weak points, disrupting load transfer and promoting premature failure in an already brittle matrix. The fiber-reinforced composite displayed typical failure modes including fiber breakage, fiber splitting, and fiber-matrix delamination, but the improved adhesion from silane treatment delayed crack initiation and propagation. Most tellingly, the composite with 5 volume percent cellulose exhibited the most uniform particle distribution of any sample, with the silane layer preventing agglomeration and minimizing stress concentration zones. This microscopic homogeneity translated directly into the highest mechanical strength among all the reinforced formulations, confirming that interface quality, not just filler quantity, governs composite performance.

Where the higher filler loadings lost ground mechanically, they excelled functionally. In dry sliding wear tests on a pin-on-disc tribometer at 20 newtons, 2 meters per second, and a 1000-meter sliding distance, neat epoxy fared worst with a specific wear rate of 0.60 cubic millimeters per newton-meter and a coefficient of friction of 0.90. Every reinforced formulation improved on this, with wear rates falling progressively from 0.57 down to 0.39 cubic millimeters per newton-meter and friction coefficients dropping from 0.81 to 0.56 as cellulose content rose. The 9 volume percent composite, BFF5, was the clear winner. The researchers attribute this to increased toughness and stiffness from the reinforcements, chemical bonding that prevents fiber pull-out, and more even stress distribution that suppresses localized wear damage. Thermal conductivity followed the same upward trajectory, climbing from 0.351 watts per meter-kelvin for neat epoxy to 0.475 watts per meter-kelvin for BFF5, as fine cellulose particles filled the interstitial spaces between fibers and silane bridges reduced interfacial thermal resistance, enabling efficient phonon transport through interconnected conduction pathways.

Flammability results added a further dimension to the multifunctional story. In horizontal burning tests, none of the composites exhibited flaming drips or ignited the underlying cotton indicator, and all resisted flame spread better than neat epoxy, which burned at 6.25 millimeters per minute. The BFF5 composite achieved the slowest flame spread rate of 8.33 millimeters per minute, with the intermediate formulations falling in between at 6.93 to 8.01 millimeters per minute. The team credits the uniform silane layer on the reinforcements with acting as a protective barrier that limits heat and oxygen penetration, while enhanced interfacial cross-linking during curing produces a compact, coherent char layer on flame exposure that insulates the underlying material. Reduced micro-cracking and delamination also helped the composites maintain structural integrity longer under thermal loading.

Taken together, the findings sketch a compelling picture of waste-to-value engineering. A single composite family built from vineyard discards and gourd stems can be tuned for strength at moderate filler levels or for wear resistance, fire safety, heat conduction, and hardness at higher loadings, allowing manufacturers to select formulations matched to specific applications. The study also underscores a broader lesson in composite design: the interplay between reinforcement architecture, filler loading, and interfacial chemistry determines whether added material helps or hurts. With silane treatment unlocking covalent bonds between plant cellulose and synthetic resin, agricultural residues that once rotted in landfills may soon find themselves in laptop lids, wall tiles, wheelchair trays, and car interiors—quiet proof that the future of high-performance materials may grow on vines and in gardens.

Subject of Research: Epoxy composites reinforced with grape stem fibers and bottle gourd stem cellulose

Article Title: Mechanical, wear, flammability, and thermal conductivity behaviour of epoxy composites reinforced with bottle gourd stem cellulose and chopped grape stem fibers

Article References: Gokilakrishnan, G., Mahendran, G., Gobu, N., & Narasimharaj, V. (2026). Mechanical, wear, flammability, and thermal conductivity behaviour of epoxy composites reinforced with bottle gourd stem cellulose and chopped grape stem fibers. Polymer Bulletin, 83(12), Article 657. https://doi.org/10.1007/s00289-026-06714-w

Image Credits: AI Generated

DOI: 10.1007/s00289-026-06714-w

Keywords: epoxy composites, natural fibers, grape stem fibers, bottle gourd cellulose, silane treatment, mechanical properties, wear resistance, flammability, thermal conductivity, biocomposites, cellulose filler, polymer composites

Mycelium-based composites are grown rather than manufactured in the conventional sense. Living fungal hyphae are inoculated onto lignocellulosic substrates, where they colonize the particles and weave them into a coherent, self-binding matrix. After the growth phase, the material is dried and heat-treated, killing the fungus and stabilizing the structure. The result is a foam-like solid that is predominantly organic, compostable, and produced at ambient temperatures, in contrast to the energy-intensive polymerization and molding processes behind expanded polystyrene. Despite a decade of enthusiasm, the field has lacked careful, statistically controlled comparisons of how substrate formulation controls performance—precisely the gap the new study set out to close.

The team, led by Diana S. Ocegueda-Vega, Nelly Flores-Ramirez, and Salomon R. Vasquez-Garcia of the Universidad Michoacana de San Nicolás de Hidalgo, together with colleagues at the Tecnológico Nacional de México in Aguascalientes, produced five P. ostreatus composites labeled S1 through S5. Formulations S1 through S4 varied the proportions and particle sizes of oak wood chips, sawdust, and corn cob, while S5 served as a 100 wt% corn-cob reference. Particle architecture proved to be a decisive variable: scanning electron microscopy showed that the geometry of the underlying particles shaped how the fungal hyphae organized, branched, and consolidated the matrix. Coarse wood chips yielded an open, loosely knit structure, whereas finer particles enabled denser hyphal packing and better mechanical integration.

That microstructural difference translated directly into bulk properties. The sawdust-based formulation, S3, achieved the highest apparent density at 178.0 kilograms per cubic meter and the highest compressive strength at 0.63 megapascals. In contrast, the coarse wood-chip formulation S1, with its more open skeleton, delivered the weakest mechanical performance. For context, these densities sit in the same low range as commercial foam packaging materials, but the strength values remain modest—confirming that current mycelium composites are best suited to low-load protective applications such as cushioning inserts, rather than structural load-bearing roles.

Moisture behavior, a long-standing Achilles heel of fungal materials, received detailed treatment. Static water contact angle measurements on the dried surfaces ranged from 107.7 to 110.7 degrees across all five formulations—values comfortably above 90 degrees that indicate hydrophobic character, likely aided by fungal hydrophobin proteins that coat aerial hyphae. Notably, these contact angles did not differ significantly between formulations, suggesting that surface wettability is largely dictated by the mycelium itself rather than the substrate. However, bulk water absorption after 24 hours told a different story: values spread from 30.6 to 46.6 percent, with statistically significant differences. Dunnett-adjusted comparisons against the corn-cob reference showed that S1 absorbed significantly less water while S3 absorbed significantly more, a finding the authors attribute to differences in pore connectivity and particle porosity.

Surface hardness, measured with a Shore D durometer, spanned 27.6 to 37.7 across the formulations. S1 and S2 fell significantly below the corn-cob reference, whereas S3 and S4 were statistically indistinguishable from it. This gradient again tracks the density trend: harder, more consolidated surfaces come from tighter particle packing and more thorough hyphal colonization. The result gives manufacturers a practical dial—adjusting particle size distribution can shift surface robustness without changing the organism or the growth protocol.

Flexural testing exposed one of the field’s persistent limitations. Three-point bending strengths ranged only from 0.07 to 0.10 megapascals, and Tukey’s all-pairwise comparison detected no statistically significant differences among the formulations. In other words, no substrate recipe in this study meaningfully improved bending resistance, which remains the weakest mechanical attribute of mycelium composites. Interestingly, S4 and S5 did post the highest mean compressive and flexural moduli, indicating that stiffness and strength respond differently to formulation—stiffness can be tuned through substrate choice even when ultimate bending strength cannot, at least not within the ranges explored here.

The statistical framework of the study deserves attention because it strengthens the practical value of the findings. Beyond one-way analysis of variance and Tukey’s honestly significant difference test for all pairwise comparisons, the authors applied Dunnett-adjusted comparisons to test each experimental formulation S1 through S4 specifically against the corn-cob reference S5. This design mirrors what an industrial formulator would actually ask: not which recipe wins overall, but whether a given blend of local residues performs as well as, or better than, a baseline single-substrate material. The answers were property-dependent—no single formulation dominated every metric, underscoring that composite design must be matched to the end-use requirements of the packaging component.

The broader significance lies in waste valorization. Quercus castanea wood residues and corn cobs are abundant, inexpensive, and locally available in many agricultural regions, including central Mexico where the research was conducted. Growing packaging from these streams couples two sustainability gains at once: it diverts lignocellulosic waste from open burning or landfilling, and it displaces petroleum-derived foams that persist for centuries and fragment into microplastics. Because mycelium composites are produced at ambient temperature and pressure and are fully biodegradable, their lifecycle emissions profile contrasts sharply with conventional expanded polystyrene, even before accounting for end-of-life benefits.

Realistic caveats remain, and the authors state them plainly. The composites are appropriate for low-load protective packaging only when shielded from direct or prolonged moisture exposure, since bulk water uptake above 30 percent would degrade cushioning performance over time in wet conditions. Mitigation strategies reported elsewhere in the literature—such as beeswax or natural oil coatings—could extend service envelopes, but were outside the scope of this study. Scaling from laboratory samples to mass production will also demand consistent control of colonization time, humidity, and sterilization. Nonetheless, by quantifying exactly how substrate composition and particle architecture govern density, moisture response, hardness, and mechanical performance, the Mexican team has converted a promising but diffuse concept into an engineerable material platform, bringing grown packaging one measurable step closer to the shipping box.

Subject of Research: Physicomechanical properties of Pleurotus ostreatus mycelium biocomposites made from agroforestry residues for sustainable packaging

Article Title: Physicomechanical properties of Pleurotus ostreatus mycelium biocomposites from agroforestry residues for sustainable packaging

Article References: Ocegueda-Vega, D. S., Flores-Ramirez, N., Vasquez-Garcia, S. R., Martínez-Flores, H. E., Velazquez-Becerra, C., & Meza-de Luna, A. (2026). Physicomechanical properties of Pleurotus ostreatus mycelium biocomposites from agroforestry residues for sustainable packaging. Polymer Bulletin, 83(11), Article 630. https://doi.org/10.1007/s00289-026-06683-0

Image Credits: AI Generated

DOI: 10.1007/s00289-026-06683-0

Keywords: mycelium composites, Pleurotus ostreatus, sustainable packaging, agroforestry residues, biodegradable materials, lignocellulosic waste, water absorption, mechanical properties, biocomposites, waste valorization, circular economy, Polymer Bulletin