中文摘要：

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7～8mm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。

英文摘要：

The collagen was crosslinked by glutaraldehyde （GTA）. The influences of the GTA content, collagen concentration and glycerol content on the swelling ratio of the modified collagen were investigated. Using the modified collagen as the matrix and sisal fiber as the reinforcement, the sisal fiber/collagen composite was prepared. The morphologies of the composites were characterized by using scanning electron microscopy （SEM）. The influences of the sisal fiber treatment, fiber content and fiber length on the mechanical properties of the composites were discussed. It is found that the alkali treatment improves the surface structure of the sisal fiber and increases the mechanical properties of the composite. The mechanical properties were improved dramatically when the sisal fiber mass fraction is 15% and the fiber length is 7-8 mm. The composites can be used as packaging materials.