|本期目录/Table of Contents|

[1]胡天娇,陆晔婷,彭亚倩,等.柠檬酸交联处理对壳聚糖纤维的增强作用[J].丝绸,2020,57(12):121103.
 HU Tianjiao,LU Yeting,PENG Yaqian,et al.Effect of cross-linking treatment with citric acid on enhancement of chitosan fiber[J].Journal of Silk,2020,57(12):121103.
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柠檬酸交联处理对壳聚糖纤维的增强作用(PDF)

《丝绸》[ISSN:1001-7003/CN:33-1122/TS]

卷:
57
期数:
2020年12期
页码:
121103
栏目:
研究与技术
出版日期:
2020-12-20

文章信息/Info

Title:
Effect of cross-linking treatment with citric acid on enhancement of chitosan fiber
文章编号:
1001-7003(2020)12-0000-00
作者:
胡天娇陆晔婷彭亚倩李 蔚张祝辉侯秀良
江南大学 生态纺织教育部重点实验室,江苏 无锡 214122
Author(s):
HU Tianjiao LU Yeting PENG Yaqian LI Wei ZHANG Zhuhui HOU Xiuliang
Key Laboratory of Science & Technology of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi 214122, China
关键词:
壳聚糖柠檬酸交联纤维力学性能
Keywords:
chitosan citric acid cross-linking fiber tensile properties
分类号:
TS102.6
doi:
-
文献标志码:
A
摘要:
为解决纯壳聚糖纤维力学性能较差的问题,文章采用环保无毒的柠檬酸溶液进行交联处理,探讨了交联处理条件(柠檬酸溶液质量分数、pH值、温度、时间)对壳聚糖纤维力学性能的影响。结果表明,在柠檬酸溶液质量分数20%、pH6、交联温度50℃、交联时间2.5 h时,纤维力学性能达到最佳,干态断裂强度提高了36.36%,干态断裂伸长率提高了31%;湿态断裂强度提高了39.81%,湿态断裂伸长率提高了31%。通过对处理前后壳聚糖纤维自由氨基量与红外吸收光谱图的变化分析,表明柠檬酸与壳聚糖上的氨基产生离子交联和化学交联,从而提高了壳聚糖纤维的力学性能。
Abstract:
In order to improve the mechanical properties of pure chitosan fiber, citric acid solution which is environmentally friendly and nontoxic was used for cross-linking treatment, and the effects of cross-linking treatment conditions (including mass fraction of citric acid solution, pH, temperature, and time) on mechanical properties of chitosan fibers were studied. The results showed that the fiber had the best tensile properties under the following conditions: mass fraction of citric acid solution 20%, pH 6, cross-linking temperature 50℃ and cross-linking time 2.5 h . Meanwhile, the dry breaking strength and breaking elongation increased by 36.36% and 31% respectively , while the wet breaking strength and breaking elongation of chitosan fiber increased by 39.81% and 31% respectively. By analyzing the changes of the free amino groups and FTIR spectra of chitosan fibers before and after the treatment, it was found that the ionic cross-linking and chemical cross-linking were generated between the amino groups of chitosan and citric acid, and therefore the mechanical properties of chitosan fiber s improved.

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备注/Memo

备注/Memo:
基金项目:江苏省自然科学基金项目(BK20180624);江苏高校优势学科建设工程资助项目(苏政办发〔2014〕37号);中央高校基本科研业务费专项资金项目(JUSRP51907A)
收稿日期:2020-03-22
作者简介:胡天娇(1996—),女,硕士研究生,研究方向为生物基纺织材料
通信作者:侯秀良,教授,houxiuliang@163.com
更新日期/Last Update: 2020-11-13