ArticleACS omega2025
Mechanical Properties of Micro/Nanocellulose-Filled Epoxy Sheets at Subzero and Elevated Temperatures.
Article in ACS omega, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Authors and funding
4 authors.
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Abstract
Due to their low cost and 100% biodegradability, nanocellulose fibrils derived from wood can serve as a filler in polymer sheets. In this study, micro/nanocellulose fibrils were obtained after Lab Valley beater (LVB) and Super masscolloider (SMC) refining. The LVB refining was carried out for 20 min at 0 clearance (LVB_0_20), and SMC refining was carried out for 60 min at 0.1 and 0 clearances (SMC_0.1_60 and SMC_0_60), and nonwoven sheets were fabricated using a vacuum filtration. These micro/nanocellulose-filled epoxy nonwoven sheets were processed by the hand layup/vacuum bagging and cured at 160 °C for 3 h. The tensile properties of filled epoxy sheets were measured at -20 °C, 23 °C, and 80 °C, and it was found that the SMC_0_60_epoxy sheet revealed high modulus at all temperatures compared to other sheets, but its strength and work-to-fracture values are found to be low at 80 °C compared to -20 °C. SMC_epoxy sheets have high tensile strength compared to LVB_epoxy sheets due to the presence of nanocellulose fibrils. The tensile fractography was carried out using SEM. Filled epoxy sheets revealed 45-70% higher thermal conductivity and slightly lower weight loss at 430 °C compared to epoxy, making these sheets useful in developing optimum strength and partially biodegradable thermal packaging components.
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