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首页> 外文期刊>RSC Advances >Surface functionalization of coconut fibers by enzymatic biografting of syringaldehyde for the development of biocomposites
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Surface functionalization of coconut fibers by enzymatic biografting of syringaldehyde for the development of biocomposites

机译：通过丁香醛酶促生物接枝开发生物复合材料的椰子纤维表面功能化

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摘要

In the present work, laccase from Trametes versicolor has been used for the biografting of natural phenol syringaldehyde (SA) on the surface of coconut fibers. Three parameters such as concentration of laccase, phenol and incubation period have been varied to optimize the reaction conditions for maximum biografting. Biografted coconut fibers were characterized with FTIR, SEM, and XRD techniques. Thermal, antibacterial and hydrophobic properties were analyzed by thermogravimetric analysis (TGA), colony forming unit (CFU) and moisture retention methods, respectively. An enhancement in the properties of coconut fibers was observed after biografting of SA. Modified coconut fibers were used as a reinforcement in the poly(butylene succinate) matrix to prepare biocomposites. Mechanical properties (tensile and flexural strength) of the biocomposites were evaluated by a universal testing machine. An increase in the mechanical strength of biocomposites was observed when reinforced with biografted fibers in comparison to unmodified coconut fibers. The fractured surface morphology of the composites indicated the better interlocking of the biografted fibers with the polymer matrix.
机译：在当前的工作中，来自Trametes versicolor的漆酶已被用于在椰子纤维表面上生物移植天然酚丁香醛（SA）。改变了三个参数，例如漆酶的浓度，苯酚和孵育时间，以优化反应条件，以实现最大的生物移植。用FTIR，SEM和XRD技术对生物接枝的椰子纤维进行了表征。通过热重分析（TGA），菌落形成单位（CFU）和水分保留方法分别分析了热，抗菌和疏水性能。 SA的生物移植后，观察到椰子纤维性能的增强。改性的椰子纤维被用作聚丁二酸丁二酯基体中的增强材料，以制备生物复合材料。通过通用测试机评估生物复合材料的机械性能（拉伸强度和弯曲强度）。与未改性的椰子纤维相比，当用生物接枝纤维增强时，观察到生物复合材料的机械强度增加。复合材料的断裂表面形态表明生物接枝纤维与聚合物基质之间的互锁性更好。

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