Ma Yue, Guo Jing, Zhao Miao, Gong Yumei, Qiao Boyang
School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, PR China.
Liaoning Engineering Technology Research Centre of Function Fiber and its Composites, Dalian 116034, PR China.
Langmuir. 2020 May 26;36(20):5647-5653. doi: 10.1021/acs.langmuir.0c01148. Epub 2020 May 15.
Cellulose (C) and Antarctic krill protein (AKP) were dissolved at low temperature, and then C/AKP composite fibers were prepared by wet spinning. In this paper, the effect of coagulation bath temperature on the properties of C/AKP composite fibers were studied by FT-IR, XRD, DSC, and other tests. The results showed that, when the temperature of the coagulation bath increased from 5 to 25 °C, the intermolecular hydrogen bond content of the C/AKP composite fibers increased from 28.20% to 31.33%. When the coagulation bath temperature is 15 °C, the breaking strength of the composite fibers is 1.64cN/dtex, which is 12% higher than that of the composite fibers at room temperature. At this temperature, the crystallinity of the composite fibers is improved, the thermal stability is slightly improved, and the surface morphology is smoother. Inspiringly, when zinc sulfate is added to the coagulation bath, the formation process of the fibers is milder. Moreover, the C/AKP composite fibers have excellent antibacterial activity against and .
将纤维素（C）和南极磷虾蛋白（AKP）在低温下溶解，然后通过湿法纺丝制备C/AKP复合纤维。本文通过傅里叶变换红外光谱（FT-IR）、X射线衍射（XRD）、差示扫描量热法（DSC）等测试研究了凝固浴温度对C/AKP复合纤维性能的影响。结果表明，当凝固浴温度从5℃升高到25℃时，C/AKP复合纤维的分子间氢键含量从28.20%增加到31.33%。当凝固浴温度为15℃时，复合纤维的断裂强度为1.64cN/dtex，比室温下的复合纤维高12%。在此温度下，复合纤维的结晶度提高，热稳定性略有改善，表面形态更光滑。令人鼓舞的是，当向凝固浴中加入硫酸锌时，纤维的形成过程更温和。此外，C/AKP复合纤维对[具体细菌1]和[具体细菌2]具有优异的抗菌活性。
