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Hydrolysation and Characterization of Acrylic Fibers

ISSN号：1000-1832
期刊名称：《东北师大学报：自然科学版》
时间：0
分类：O631.32[理学—高分子化学;理学—化学] TQ342.3[化学工程—化纤工业]
作者机构：[1]Nantong Textile Research Institute, Soochow University, Nantong 226004, China, [2]School of Textile and Clothing Engineering, Soochow University, Suzhou 215021, China, [3]National Engineering Laboratory for the Modern Silk (Suzhou), Suzhou 215123, China
相关基金：Environmental Protection Department of Jiangsu Province,China（No.2012009）; Suzhou Municipal Government,China（No.SYG201202）

作者：艾丽[1], 李慧[2], 朱雪兰[2], 潘志娟[1,2,3], 朱新生[1,2,3]

关键词： acrylic, fiber, cationic, surfactant, HYDROLYSIS, dye, uptake, electric, conductivity, MORPHOLOGY, acrylic fiber cationic surfactant hydrolysis dye uptake electric conductivity morphology

中文摘要：

Effect of the cationic surfactant on the hydrolysis of acrylic staple fiber dispersed in alkaline aqueous solution was studied.The cationic dyestuff uptake of the resultant hydrolysates was investigated as well.The results showed that the surfactant accelerated the hydrolysis of cyano-and ester-groups.The carboxyl content of the hydrolyzed fibers reached the maximum 6.85 mmol/g(i.e.,total molar conversion of the two groups 38.7%) while keeping fiber integrity.The scanning electron microscopy(SEM) images implied that hydrolysis happened both on fiber surface and in the inner part of the fiber in the presence of surfactant.The cationic dye removal due to adsorption onto the hydrolyzed fibers increased with increasing temperature,with the removal 97.4% at 60℃.The adsorption of the fibers followed the Freundlich’s adsorption isotherm and the Lagergren’s pseudo-second order dynamic equation with the activation energy 5.4 kJ/mol.Unexpectedly,the steric hindrance of access to the inside carboxyl groups of the hydrolyzed fibers caused a low dye sorption capacity,5-6 mg/g.

英文摘要：

Effect of the cationic surfactant on the hydrolysis of acrylic staple fiber dispersed in alkaline aqueous solution was studied.The cationic dyestuff uptake of the resultant hydrolysates was investigated as well.The results showed that the surfactant accelerated the hydrolysis of cyano-and ester-groups.The carboxyl content of the hydrolyzed fibers reached the maximum 6.85 mmol/g（i.e.,total molar conversion of the two groups 38.7%） while keeping fiber integrity.The scanning electron microscopy（SEM） images implied that hydrolysis happened both on fiber surface and in the inner part of the fiber in the presence of surfactant.The cationic dye removal due to adsorption onto the hydrolyzed fibers increased with increasing temperature,with the removal 97.4% at 60℃.The adsorption of the fibers followed the Freundlich＇s adsorption isotherm and the Lagergren＇s pseudo-second order dynamic equation with the activation energy 5.4 kJ/mol.Unexpectedly,the steric hindrance of access to the inside carboxyl groups of the hydrolyzed fibers caused a low dye sorption capacity,5-6 mg/g.

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