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Abstract: In this study, researchers set out to test the performance of biocomposites reinforced with regenerated cellulose fibers and lactic acid thermoset bioresin. A difference in treatments was conducted as the cellulose fibers were surface treated with either silane or alkali. The main goal of this research was to improve the overall strength of the interactions at the fiber-matrix interface. Multiple strength tests, such as the tensile, flexural and impact strength tests were performed to determine whether an improvement at the interface had occurred. Other tests such as thermal conductivities, viscoelasticity and microscopy images were also performed. It was noted that the silane treatment greatly improved the mechanical properties of the biocomposites. An enhanced interlocking at the fiber-matrix interface was seen, as the porosity volume decreased. A change in hydrophilicity was also noted due to the decrease in water absorption capability of the composite and the increased angle of contact. Similar results were noted for the alkali treated cellulose fibers, however they were not to the same extent as the silane treated fibers. 

Reference: Cellulose 22 (2015) 2507–2528

DOI: 10.1007/s10570-015-0643-x