Dong Min, Wu Dawei, Han Jie, Wang Yingxia, Xue Zhixin, Xia Yanzhi
State Key Laboratory of Bio-Fibers and Eco-Textiles, Collaborative Innovation Center of Marine Biobased Fibers and Ecological Textiles, College of Chemistry and Chemical Engineering, Institute of Marine Biobased Materials, Qingdao University, Qingdao 266071, China.
Public Technology Service Center, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.
ACS Omega. 2020 Mar 20;5(12):6661-6665. doi: 10.1021/acsomega.9b04435. eCollection 2020 Mar 31.
In order to improve the characters of carrageenan fibers, two different process methods were presented in this study. Dopes prepared directly from extraction by Route A-adding NaOH after extraction-or Route B-using NaOH solution to extract and carrageenan fibers (Fibers A and Fibers B)-were obtained using the wet spinning process using barium chloride as the coagulant at room temperature. The properties of dopes were studied by dynamic light scattering and gel permeation chromatography. The properties of Fibers A and Fibers B were comprehensively studied by Fourier transform infrared, thermal analysis, scanning electron microcopy, and tensile testing. The results showed that carrageenan with a larger molecule weight in Dope A and Fibers A showed higher intensity, better morphology, and stable thermal properties.
为了改善卡拉胶纤维的性能，本研究提出了两种不同的加工方法。通过路线A（提取后添加NaOH）或路线B（使用NaOH溶液提取）直接从提取物中制备纺丝原液，并使用氯化钡作为凝固剂在室温下通过湿法纺丝工艺获得卡拉胶纤维（纤维A和纤维B）。通过动态光散射和凝胶渗透色谱法研究了纺丝原液的性能。通过傅里叶变换红外光谱、热分析、扫描电子显微镜和拉伸试验对纤维A和纤维B的性能进行了综合研究。结果表明，原液A和纤维A中分子量较大的卡拉胶表现出更高的强度、更好的形态和稳定的热性能。
