Study on the preparation and flame retardant properties of an eco-friendly potassium-calcium carrageenan fiber

Quanyi Zhang; Weiwei Zhang; Cunzhen Geng; ZhiXin Xue; Yanzhi Xia; Yimin Qin; Guofang Zhang

doi:10.1016/j.carbpol.2018.10.058

Study on the preparation and flame retardant properties of an eco-friendly potassium-calcium carrageenan fiber

Carbohydr Polym. 2019 Feb 15:206:420-427. doi: 10.1016/j.carbpol.2018.10.058. Epub 2018 Oct 28.

Authors

Quanyi Zhang¹, Weiwei Zhang², Cunzhen Geng¹, ZhiXin Xue³, Yanzhi Xia¹, Yimin Qin⁴, Guofang Zhang⁴

Affiliations

¹ 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.
² National Engineering Technology Research Center of Flame Retardant Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 10081, China.
³ 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. Electronic address: xuezhixin@qdu.edu.cn.
⁴ State Key Laboratory of Bioactive Seaweed Substances, Qingdao Bright Moon Seaweed Group Co., Ltd., Qingdao, 266400, China.

PMID: 30553341
DOI: 10.1016/j.carbpol.2018.10.058

Abstract

Potassium-calcium carrageenan fibers were prepared in an eco-friendly fashion by wet spinning method. The forming process and flame retardant properties of this fiber compared with the traditional barium carrageenan fibers were studied in this paper. The results showed that the potassium ions were combined with the sulfate group in the carrageenan by ion bonding that made the potassium-calcium carrageenan fibers form a gel structure, which was a relative loose spatial network, while barium ions reacted with the sulfate groups of carrageenan to induce barium carrageenan fibers form a precipitated structure, which was a relative close spatial network. The limiting oxygen index, cone calorimeter, thermogravimetric analysis and pyrolysis-gas chromatography-mass spectrometry tests implied that K⁺-Ca²⁺ affected the pyrolysis behavior of potassium-calcium carrageenan fibers and catalyzed it to produce different pyrolysis products from Ba²⁺ in barium carrageenan fibers. In addition, the pyrolysis mechanism of potassium-calcium carrageenan fibers was elucidated in this paper.

Keywords: Carrageenan fibers; Flame retardant; Forming process; Pyrolysis mechanism.