壳聚糖/N-乙烯基吡咯烷酮接枝共聚物的制备及其性能

doi:10.16085/j.issn.1000-6613.2018-2438

化工进展 ›› 2020, Vol. 39 ›› Issue (9): 3535-3542.DOI: 10.16085/j.issn.1000-6613.2018-2438

• 专栏：材料科学与技术 • 上一篇下一篇

壳聚糖/N-乙烯基吡咯烷酮接枝共聚物的制备及其性能

刘旭光(), 辛梅华, 李明春(), 许军凯, 王林

华侨大学材料科学与工程学院，环境友好功能材料教育部工程中心，福建厦门 361021

出版日期:2020-09-05 发布日期:2020-09-11
通讯作者: 李明春
作者简介:刘旭光（1994—），男，硕士研究生，研究方向为壳聚糖的改性及应用。E-mail: 460672873@qq.com。
基金资助:
福建省科技项目(2019H6014);福建省自然科学基金(2016J01234)

Preparation and properties of chitosan/N-vinyl pyrrolidone copolymer

Xuguang LIU(), Meihua XIN, Mingchun LI(), Junkai XU, Lin WANG

College of Material Science and Engineering, Huaqiao University, Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Xiamen 361021, Fujian, China

Online:2020-09-05 Published:2020-09-11
Contact: Mingchun LI

摘要/Abstract

摘要：

以壳聚糖（CS）和N-乙烯基吡咯烷酮（NVP）为原料，本文采用过氧化氢和抗坏血酸共引发剂引发，制备壳聚糖/N-乙烯基吡咯烷酮的接枝共聚物（CS-g-NVP），研究了引发剂配比、反应温度和反应时间等因素对接枝共聚反应的影响。通过红外光谱、核磁共振和热重分析等对产物进行表征，并考察其吸湿性和亲水性能。结果表明，接枝共聚反应的最佳条件为：引发剂抗坏血酸/过氧化氢的摩尔比为1∶1、反应温度60℃、反应时间12h。接枝共聚产物的吸湿性优于壳聚糖，在饱和氯化钙和饱和硫酸铵环境下产物的吸湿率分别为3.68%和23.1%，高于原料壳聚糖的0.41%和9.77%，产物具有良好的亲水性和水溶性，能溶解于酸性和碱性水溶液中。

关键词: 壳聚糖, 接枝共聚, 自由基聚合

Abstract:

Graft copolymer (CS-g-NVP) was prepared by grafting copolymerization of chitosan (CS) with N-vinyl pyrrolidone (NVP) using hydrogen peroxide/ascorbic acid (H₂O₂/ASA) oxidation-reduction system as initiator. The effects of initiator ratio, reaction time, reaction temperature on the grafting copolymerization process were investigated, respectively. The structure of the graft copolymer was characterized by FTIR, ¹H NMR, TG, and its hygroscopicity and hydrophilicity were explored. The results showed that the optimal reaction conditions of the graft copolymerization were the molar ratio of H₂O₂ to ASA of 1∶1, reaction temperature at 60℃ and reaction time for 12h. The moisture absorption performance of the product was better than that of chitosan. The moisture absorption rates of the products in the saturated calcium chloride and ammonium sulfate solutions were 3.68% and 23.1%, respectively and those of chitosan were 3.68% and 23.1%, suggesting an improved hygroscopicity of the product. The product has good hydrophilicity and water solubility, and can be dissolved in both acidic and alkaline aqueous solutions.

Key words: chitosan, graft copolymerization, free radical polymerization

中图分类号:

O636.1

刘旭光, 辛梅华, 李明春, 许军凯, 王林. 壳聚糖/N-乙烯基吡咯烷酮接枝共聚物的制备及其性能[J]. 化工进展, 2020, 39(9): 3535-3542.

Xuguang LIU, Meihua XIN, Mingchun LI, Junkai XU, Lin WANG. Preparation and properties of chitosan/N-vinyl pyrrolidone copolymer[J]. Chemical Industry and Engineering Progress, 2020, 39(9): 3535-3542.

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壳聚糖/N-乙烯基吡咯烷酮接枝共聚物的制备及其性能

Preparation and properties of chitosan/N-vinyl pyrrolidone copolymer

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