Improving the adhesion between fibers and polymer matrix is essential for natural fiber composites. The purpose of this research is to investigate the effect of enzymatic treatment on bamboo fibers (BF) reinforced biodegradable plastic composites. Three different kinds of enzymes (pectinase, cellulase, laccase) were used to treat BF, then biocomposites were fabricated by BF and poly(hydroxybutyrate-co-valerate) (PHBV) through melt blending and injection molding process. The modification effects of BF treated with enzymes were evaluated by fourier transform infrared spectroscopy and scanning electron microscopy. Results showed that enzymatic treatment enhanced the mechanical properties of BF/PHBV composites and decreased the water absorption of BF/PHBV composites, whereas the enhancement of mechanical properties is not significant. These improvements are attributed to the interfacial adhesion between BF and PHBV matrix was increased by enzymatic treatment. Comparing the modification effects of the three enzymes, the BF/PHBV composites with pectinase treatment obtained the best mechanical properties and the lowest water absorption. In addition, the thermal stability and crystallinity of BF/PHBV composites increased after enzymatic treatment.

对于天然纤维复合材料而言，改善纤维与聚合物基质之间的粘合力至关重要。这项研究的目的是研究酶处理对竹纤维（BF）增强的可生物降解塑料复合材料的影响。用三种不同的酶（果胶酶，纤维素酶，漆酶）处理高炉，然后由高炉和聚羟基丁酸酯-共-戊酸酯（PHBV）通过熔融共混和注塑工艺制备生物复合材料。通过傅里叶变换红外光谱和扫描电子显微镜评估了酶处理高炉的改性效果。结果表明，酶处理提高了BF / PHBV复合材料的力学性能，降低了BF / PHBV复合材料的吸水率，而机械性能的提高并不明显。这些改善归因于通过酶处理增加了BF和PHBV基质之间的界面粘附。比较这三种酶的修饰效果，用果胶酶处理的BF / PHBV复合材料具有最佳的机械性能和最低的吸水率。此外，酶处理后BF / PHBV复合材料的热稳定性和结晶度增加。