大连工业大学学报2024，Vol.43Issue(6)：397-402,6.DOI:10.19670/j.cnki.dlgydxxb.2024.0602
果胶/阳离子淀粉复合纤维的制备及其对Cu2+的吸附
Preparation of pectin/cationic starch composite fibers and their adsorption ability to Cu2+
摘要
Abstract
Poly-anionic electrolyte pectin/cationic starch(PEC/CS)composite fibers were prepared by wet spinning method via blending the CS with PEC to construct a polyelectrolyte composite system and improve the process ability of PEC fiber.The effects of spinning process parameters on the fiber morphology and mechanical properties were investigated with the aim of confirming the optimal spinning process.The chemical structure,crystalline properties and thermal stability of the fibers prepared under the optimized conditions were characterized while the biodegradability of the fibers and their adsorption ability to heavy metal cationic ions were tested.The optimized parameters for preparing composite fiber were found to be 10∶1 mass ratio of PEC to CS,6.5％concentration of spinning solution,3％concentration of coagulation bath,temperature of 30℃,2 of stretching multiplier,temperature of stretching bath at 50 ℃,1％concentration of cross-linking agent,and temperature of heat setting at 80 ℃.The fracture strength of the prepared fibers was up to 2.19 cN/dtex,and the elongation at break was 13.4％.In addition,the fibers displayed excellent biodegradability with a mass loss rate of 81.6％after seven weeks.The adsorption capacity of fibers to Cu24 was 130.5 mg/g at room temperature,with pH value of 6 and adsorption time of 6 h.关键词
果胶/阳离子淀粉/复合纤维/湿法纺丝/吸附Key words
pectin/cationic starch/composite fiber/wet spinning/adsorption分类
化学化工引用本文复制引用
李佳文,明晓娜,拖晓航,宫玉梅..果胶/阳离子淀粉复合纤维的制备及其对Cu2+的吸附[J].大连工业大学学报,2024,43(6):397-402,6.基金项目
辽宁省教育厅科学研究基金项目(LJKZ0517) （LJKZ0517）
大连市科技基金项目(2022JJ12GX030). （2022JJ12GX030）
