Development of a high-strength carrageenan fiber with a small amount of aluminum ions pre-crosslinked in spinning solution
Author:
Jia Liting1, Han Xiao1, Zhai Hongjie1, Qiao Cuixia2, Geng Cunzhen3, Xue Zhixin123ORCID, Xia Yanzhi3
Affiliation:
1. College of Chemistry and Chemical Engineering, Qingdao University , Qingdao 266071 , China 2. Department of Traditional Chinese Medicine , The Affiliated Hospital of Qingdao University, Qingdao University , Qingdao , 266071 , China 3. State Key Laboratory of Bio-fibers and Eco-textiles, Collaborative Innovation Center of Marine Biobased Fibers and Ecological textiles, Institute of Marine Biobased Materials, Qingdao University , Qingdao 266071 , China
Abstract
Abstract
In this work, an improved wet spinning method was proposed to prepare high-tensile-strength carrageenan fibers by pre-crosslinking process. Pre-crosslinking was achieved by adding a small amount of Al3+ ions into the spinning solution. The properties of the carrageenan spinning solution were analyzed by polarizing microscope, dynamic light scattering, and viscosity, the results showed that the modified spinning solution pre-crosslinked with Al3+ ions was orderly and high-viscosity, and the average particle size of the spinning solution was increased. The properties of the carrageenan fibers were characterized using scanning electron microscope, Fourier transform infrared spectroscopy, X-ray diffraction spectroscopy, X-ray photoelectron spectroscopy, and tensile tests. The results showed that the new carrageenan fibers were formed by coordination and ionic bonds between Al3+, –OH and sulfate groups. The tensile strength was up to 1.77 cN/dtex of Al-3.0/CAF (the best of newly prepared carrageenan fiber in this work), which is the highest strength carrageenan fiber prepared at present. Compared with the traditional process, this method reduced the concentration of Al3+ ions in coagulation bath and stretch bath, thus saving the production cost and protecting the environment.
Funder
Program for Changjiang Scholars and Innovative Research Team in University of Ministry of Education of China Natural Science Foundation of Shandong Province State Key Laboratory of Bio-Fibers and Eco-Textiles of Qingdao University Program of the National Natural Science Foundation of China
Publisher
Walter de Gruyter GmbH
Subject
Materials Chemistry,Polymers and Plastics,General Chemical Engineering
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