Dalian Polytechnic University, Liaoning 116034, PR China.
Dalian Polytechnic University, Liaoning 116034, PR China; Liaoning Engineering Technology Research Center of Function Fiber and Its Composites, Dalian Polytechnic University, Dalian 116034, PR China.
Int J Biol Macromol. 2018 Jul 15;114:334-340. doi: 10.1016/j.ijbiomac.2018.03.118. Epub 2018 Mar 22.
In this paper, cellulose/Antarctic krill protein composite fibers were obtained by wet spinning. The raw materials were recyclable cellulose (C) and Antarctic krill protein (AKP), while the solvent was an aqueous solution containing 7wt% NaOH and 12wt% urea, which is eco-friendly. The fiber was stretched in a coagulation bath containing HSO and NaSO. The effects of coagulation at different bath concentrations on the mechanical performance, crystallinity, and morphology of the C/AKP composite fibers were studied systematically. The break strength firstly increased and then decreased with an increase in the concentration of the bath. At a coagulation bath concentration of HSO/NaSO (12wt%/12wt%), the crystallinity was 15.16%. Scanning electron microscopy (SEM) observations revealed the presence of grooves on the fiber surface. The type and percentage of hydrogen bonds in the C/AKP composite fibers were analyzed by Fourier transform infrared spectroscopy (FT-IR). On the basis of the obtained results, we finally optimized the coagulation bath composition and concentration.
本文采用湿法纺丝技术制备了纤维素/南极磷虾蛋白复合纤维。该纤维的原料为可再生纤维素（C）和南极磷虾蛋白（AKP），纺丝溶剂为含有 7wt%NaOH 和 12wt%尿素的水溶液，具有环保性。纤维在含有 HSO 和 NaSO 的凝固浴中进行拉伸。系统研究了不同凝固浴浓度对 C/AKP 复合纤维力学性能、结晶度和形貌的影响。纤维的断裂强度先增加后降低，随着凝固浴浓度的增加而增加。在 HSO/NaSO（12wt%/12wt%）凝固浴浓度下，结晶度为 15.16%。扫描电子显微镜（SEM）观察表明纤维表面存在凹槽。通过傅里叶变换红外光谱（FT-IR）分析了 C/AKP 复合纤维中氢键的类型和比例。基于实验结果，最终优化了凝固浴的组成和浓度。
