School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, PR China.
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.
Carbohydr Polym. 2018 Jun 1;189:72-78. doi: 10.1016/j.carbpol.2018.02.013. Epub 2018 Feb 8.
Sodium alginate (SA) and antarctic krill protein (AKP) were blended to fabricate the SA/AKP composite fibers by the conventional wet spinning method using 5% CaCl as coagulation solution. The sodium salt was added to the SA/AKP solution to adjust the ionization degree and intermolecular interaction of composite system. The main purpose of this study is to investigate the influences of sodium salt types (NaCl, CHCOONa, NaSO) on the intermolecular interaction of SA/AKP composite fibers. The intermolecular interaction, morphology, crystallinity, thermal stability and mechanical properties of SA/AKP composite fibers were analyzed by fourier transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM), x-ray diffraction (XRD), thermogravimetric analysis (TGA). The results show that the types of sodium salt have obvious influences on the content of both β-sheet, intermolecular hydrogen bond, breaking strength and surface morphology in SA/AKP composite fibers, but have a negligible effect on the crystallinity and thermal stability.
海藻酸钠（SA）和南极磷虾蛋白（AKP）通过传统的湿法纺丝方法混合，使用 5% CaCl2 作为凝固溶液来制备 SA/AKP 复合纤维。向 SA/AKP 溶液中添加钠盐以调节复合体系的电离度和分子间相互作用。本研究的主要目的是研究钠盐类型（NaCl、CHCOONa、NaSO）对 SA/AKP 复合纤维分子间相互作用的影响。通过傅里叶变换红外光谱（FT-IR）、扫描电子显微镜（SEM）、X 射线衍射（XRD）、热重分析（TGA）分析了 SA/AKP 复合纤维的分子间相互作用、形态、结晶度、热稳定性和力学性能。结果表明，钠盐的类型对 SA/AKP 复合纤维中β-折叠、分子间氢键、断裂强度和表面形态的含量有明显的影响，但对结晶度和热稳定性的影响可以忽略不计。
