【摘要】 甲壳素再生纤维因高强低韧的力学缺陷，使其应用领域受到限制。在甲壳素再生纤维中添加少量丝素蛋白作为增韧剂可以提升其韧性。采用磷酸冻融循环溶解法制备高浓度甲壳素/丝素混合溶液，观察了溶解过程并对溶液的黏度特性进行表征。然后通过干湿法纺丝工艺构建的双重拉伸调控体系，成功制备了高强高韧的再生甲壳素/丝素复合纤维，其拉伸强度达（321±7）MPa，断裂延伸率达到20%±1%。更多还原

【Abstract】 The application fields of chitin regenerated fibers are limited due to their mechanical defects of high strength and low toughness. Small amount of silk fibroin is used to enhance the toughness of chitin regenerated fiber. A high-concentration chitin/silk fibroin mixed solution is prepared using the freeze-thaw cycle dissolution method, and the dissolution process is systematically observed along with the characterization of the solution′s viscosity properties. Subsequently, a dual stretching control system constructed through dry-wet spinning processes successfully produces regenerated chitin/silk fibroin composite fiber with both high strength and high toughness. The tensile strength reaches(321 ± 7) MPa, and the elongation at break is 20%±1%.更多还原