以辣根过氧化物酶(HRP)为催化剂,在H2O2存在下,氧化邻甲氧基酚形成自由基,引发超高分子量聚乙烯纤维(UHMWPE)表面接枝聚丙烯酰胺,达到其表面改性的目的.通过正交实验确定了表面接枝的最佳条件:反应时间为1.5 h,H2O2的浓度为0.03%,邻甲氧基酚的浓度为0.5%.纤维单丝拔出实验结果表明,酶法改性的UHMWPE纤维/环氧树脂体系的界面粘结强度有明显提高,最大拔出强度比原纤维提高了69.8%.电镜扫描及红外光谱表征结果显示,改性后的UHMWPE纤维表面的粗糙度增加,并有新基团产生.
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