用戊二醛作交联剂对皮革下脚料中提取的胶原水解物进行交联改性,采用溶胀度表征了材料的交联程度.探讨了戊二醛用量、胶原蛋白浓度和丙三醇含量对材料溶胀度的影响,并使用红外光谱对交联产物进行了表征.以改性胶原蛋白为基体、剑麻纤维为增强相,制备了剑麻纤维/胶原蛋白复合材料.用扫描电子显微镜对复合材料的形貌进行了表征,探讨了剑麻纤维的表面处理、纤维含量以及长度对复合材料力学性能的影响.结果表明,对剑麻纤维表面进行碱处理可以改善纤维的表面结构,增加纤维与基体的界面粘结,提高复合材料的力学性能.当剑麻纤维质量分数为15%、纤维长度为7～8 mm时,复合材料具有较好的力学性能.该复合材料可望在包装垫隔材料方面得以应用.
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