五倍子单宁改性整理壳聚糖纤维  

The modified finishing of chitosan fiber with gallnut tannins

作　　者：朱小颖 孙其松 彭诗怡 陶永瑛 侯秀良[1] ZHU Xiao-ying;SUN Qi-song;PENG Shi-yi;TAO Yong-ying;HOU Xiu-liang(Key Laboratory of Science&Technology of Eco-Textiles,Ministry of Education,Jiangnan University,Wuxi 214122,China;Luolai Lifestyle Technology co.,Ltd.,Nantong 226009,China)

机构地区：[1]江南大学生态纺织教育部重点实验室,无锡214122 [2]罗莱生活科技股份有限公司,南通226009

出　　处：《天然产物研究与开发》2019年第11期1960-1967,共8页Natural Product Research and Development

基　　金：中央高校基本科研业务费(JUSRP51907A);江苏省科技成果转化专项(BA2016117);江苏省研究生科研与实践创新计划(SJCX19_0784)

摘　　要：壳聚糖纤维的力学性能大大限制了其应用范围,为扩大其应用范围和价值,采用五倍子单宁对壳聚糖纤维进行改性整理。采用响应面法研究了不同整理条件对壳聚糖纤维吸附量的影响,得到最佳整理条件并比较了整理前、后壳聚糖纤维的力学性能和荧光性能。结果表明,五倍子单宁整理壳聚糖纤维的最佳条件为:pH=3,温度70℃,时间32.1 min,五倍子单宁用量为14.3%。在此条件下五倍子单宁的吸附量为127.1 mg/g。五倍子单宁整理后的壳聚糖纤维力学性能改善,断裂强度提高7.4%,初始模量提高30%,3%的定伸长强度提高32.4%。同时,荧光强度也增强约3倍。本实验为提高壳聚糖纤维性能提供了一种新途径。Chitosan fiber had great potential to be used as absorbent suture and dressing due to good biocompatibility.However,the weak mechanical properties limited its application.In order to expand its application range and value,chitosan fibers were modified by gallnut tannins.The effects of different finishing conditions on the adsorption capacity of chitosan fibers were studied by response surface methodology.The mechanical properties and fluorescence properties of chitosan fibers before and after finishing under optimum finishing conditions were compared.Results indicated that the thermodynamics of the adsorption of chitosan fibers by gallnut tannins conformed to the Langmuir adsorption isotherm model and the kinetics accorded with the quasi-secondary kinetic model.In addition,the optimal conditions for the adsorption of chitosan fibers by gallnut tannins by response surface method were:pH=3,temperature was 70°C,time was 32.1 min and the amount of gallnut tannins was 14.3%.Under this condition,the adsorption capacity of gallnut tannins was 127.1±0.2 mg/g.Compared with chitosan fiber before finished,the breaking strength was increased by 7.4%,the initial modulus was increased by 30%,and the tensile strength at the certain elongation of 3%was increased by 32.4%.At the same time,the fluorescence intensity was also enhanced by about 3 times.This experiment provided a new way to improve the performance of chitosan fibers.

关 键 词：五倍子单宁 壳聚糖纤维 改性 功能纤维 

分 类 号：TS102.6[轻工技术与工程—纺织工程]