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以戊二醛为增强改性剂,利用湿法纺丝制备含有预埋增强剂的南极磷虾蛋白/海藻(AKP/SA)初生纤维,通过初生纤维纺丝线在线热交联技术实现热交联反应从而制得高强度南极磷虾蛋白/海藻(HAKP/SA)复合纤维。利用旋转黏度计确定了增强交联反应的热交联温度,研究了交联度对复合纤维微观结构以及吸湿性能的影响,测试了增强后复合纤维力学性能和结晶性能的变化。结果表明:80℃时戊二醛能有效发生热交联反应;AKP/SA复合纤维具有较好的吸湿性能,吸湿率为7.3%,随着交联度的提高,复合纤维的吸湿性能降低,吸湿平衡时间缩短;HAKP/SA复合纤维仍以非晶形态存在,表面存在不均匀的沟槽结构;力学性能测试表明增强后的纤维断裂强度提高了13%。
Using glutaraldehyde as a modifier, the crude fiber of Antarctic krill protein / seaweed (AKP / SA) containing the embedded enhancer was prepared by wet spinning, and the heat-cross was achieved by the online thermal crosslinking technology of the primary fiber spinning line Linking reaction to produce high strength Antarctic krill protein / seaweed (HAKP / SA) conjugate fibers. The thermal crosslinking temperature was measured by rotary viscometer. The effects of crosslinking degree on the microstructure and hygroscopicity of the composite fibers were investigated. The changes of the mechanical properties and the crystallinity of the composite fibers were tested. The results showed that glutaraldehyde can effectively cross-link at 80 ℃. AKP / SA composite fiber has good hygroscopicity with a moisture absorption rate of 7.3%. With the increase of the degree of crosslinking, the hygroscopicity of the composite fiber decreases, Hygroscopic equilibrium time is shortened; HAKP / SA composite fibers are still amorphous, uneven groove structure exists on the surface; mechanical properties tests show that the enhanced fiber fracture strength increased by 13%.