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.
Carbohydr Polym. 2020 May 15;236:116057. doi: 10.1016/j.carbpol.2020.116057. Epub 2020 Feb 24.
Carrageenan fibers have attractive applications in textile, but their low strength remains a problem that needs to be urgently addressed. In this work, a novel facile, environmental friendly method for fabricate high-strength carrageenan fibers is proposed. It involves the crosslinking of a small amount of Ba ions in the carrageenan solution, followed by using recyclable alcohol in coagulation and stretching baths. Carrageenan molecular chains were allowed to first sufficiently interact with metal barium ions, and then were stretched and dehydrated with alcohol to increase the hydrogen bonding interaction between the molecular chains. As a result, the carrageenan fibers with high-strength ionic and hydrogen bonds were obtained. The fibers obtained by the novel method had high tensile strength at 1.63 cN/dtex, which is two times higher than that of those obtained by the traditional process.
卡拉胶纤维在纺织领域具有诱人的应用前景，但强度低仍是一个亟待解决的问题。本工作提出了一种新颖、环保的高强度卡拉胶纤维制备方法。该方法涉及在卡拉胶溶液中少量钡离子的交联，然后在凝固浴和拉伸浴中使用可回收的醇。卡拉胶分子链首先与金属钡离子充分相互作用，然后用醇拉伸和脱水，以增加分子链之间的氢键相互作用。结果，得到了具有高强度离子键和氢键的卡拉胶纤维。新型方法得到的纤维具有 1.63 cN/dtex 的高拉伸强度，比传统工艺得到的纤维高两倍。
