Effect of epichlorohydrin on the wet spinning of carrageenan fibers under optimal parameter conditions.
Motivated by the extensive application of carrageenans, this work prepared carrageenan fibers via wet spinning. The optimum spinning parameters were explored by means of an orthogonal test. According to the results of tensile test, dope concentration, draw ratio, coagulation bath temperature, and coagulation bath concentration set to 9%, 1.2, 15°C and 5%, respectively, were the optimum spinning conditions. These parameters were then applied to fabricate fibers treated with epichlorohydrin in a stretch bath. The result of tensile testing demonstrated a positive improvement in the intensity, and SEM showed obvious necking phenomenon of the crosslinked carrageenan fibers. The structures and special groups were characterized with X-ray diffraction and FTIR, and the results indicated the regularity of the net structure and the increase in ether bond and methylene. In some, crosslinking reactions in optimum parameter conditions yield excellent fibers and thus present promising applications.
Key Laboratory for Advanced Fiber Materials and Modern Textiles, Qingdao University, Qingdao 266071, China; College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China; Institute of Marine Biobased Materials, Qingdao University, Qingdao 266071, China.
Weiwei
W
Zhang
Key Laboratory for Advanced Fiber Materials and Modern Textiles, Qingdao University, Qingdao 266071, China; College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China; Institute of Marine Biobased Materials, Qingdao University, Qingdao 266071, China. Electronic address: xuezhixin@qdu.edu.cn.
Zhixin
Z
Xue
Key Laboratory for Advanced Fiber Materials and Modern Textiles, Qingdao University, Qingdao 266071, China; College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China; Institute of Marine Biobased Materials, Qingdao University, Qingdao 266071, China.
Miao
M
Yan
Key Laboratory for Advanced Fiber Materials and Modern Textiles, Qingdao University, Qingdao 266071, China; College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China; Institute of Marine Biobased Materials, Qingdao University, Qingdao 266071, China.
Jingjing
J
Liu
Key Laboratory for Advanced Fiber Materials and Modern Textiles, Qingdao University, Qingdao 266071, China; College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China; Institute of Marine Biobased Materials, Qingdao University, Qingdao 266071, China.
Yanzhi
Y
Xia
D002351:Carrageenan / Q000737:chemistry*; D004811:Epichlorohydrin / Q000737:chemistry*; D008422:Materials Testing; D013696:Temperature; D013718:Tensile Strength
D004811:Epichlorohydrin; D002351:Carrageenan
Carrageenan; Crosslinking reaction; Epichlorohydrin; Wet spinning