Carrageenan Fiber Prepared by a New Process Route of Ba^(2+)Ion Pre-Crosslinking in the Spinning Solution  

作　　者：Liting Jia Xiao Han Cuixia Qiao Gang Zhao Yanzhi Xia Zhixin Xue 

机构地区：[1]School of Chemistry and Chemical Engineering,State Key Laboratory of Bio-Fibers and Eco-Textiles,Marine Fiber New Material Institute,Qingdao University,Qingdao,266071,China [2]Department of Traditional Chinese Medicine,The Affiliated Hospital of Qingdao University,Qingdao,266000,China

出　　处：《Journal of Renewable Materials》2024年第3期427-441,共15页可再生材料杂志（英文）

基　　金：supported by the Program of the National Natural Science Foundation of China(52173037);Natural Science Foundation of Shandong Province(ZR2020ME061);State Key Laboratory of Bio-Fibers and Eco-Textiles of Qingdao University(ZFT201810,ZKT17,TSKT202107);the Program for Changjiang Scholars and Innovative Research Team in University of Ministry of Education of China(IRT14R30).

摘　　要：Ba^(2+)pre-crosslinked carrageenan fiber(Ba/CAF)was prepared by adding a small amount of Ba^(2+) to the carrageenan(CA)solution as the spinning solution.Ba/CAF-n/A,Ba/CAF-n/B and Ba/CAF-n/C were prepared with ethanol solution(combine A),high concentration BaCl_(2)solution(combine B)and low concentration BaCl_(2)solution(combine C),as coagulation bath and stretch bath,respectively.The combination of coagulation bath and stretch bath suitable for Ba^(2+) pre-crosslinking wet spinning was screened.The results showed that Ba^(2+) can induce the birefringence of the CA molecular chain,and the Ba^(2+) pre-crosslinking effect is the best when the CA mass fraction is 8.0 wt%.From the perspective of production safety,fiber performance and spinning cost,the coagulation bath of 3.5 wt%BaCl_(2)solution and stretch bath of 1.7 wt%BaCl_(2)solution,that is,combination C with low concentration BaCl_(2)solution,is the best choice.Ba/CAF-8.0/C was obtained under the best conditions.The linear intensity,water absorption and flame retardancy study showed that the breaking strength of Ba/CAF-8.0/C is as high as 1.61 cN/dtex,the water absorption was 649.2%and 574.3%,in deionized water and normal saline,respectively,and the LOI value reached 32.

关 键 词：Carrageenan fiber Ba^(2+)ion pre-crosslinking wet spinning flame retardancy 

分 类 号：TB30[一般工业技术—材料科学与工程]