食品科学 ›› 2009, Vol. 30 ›› Issue (6): 39-42.doi: 10.7506/spkx1002-6630-200906003

• 工艺技术 • 上一篇    下一篇

相转移催化法制备羧甲基壳聚糖及其性能表征

肖玉良,李玉琴,夏成才,游桂荣,韩俊芬,段桂运,张海霞   

  1. 泰山医学院药学院
  • 收稿日期:2008-03-13 修回日期:2008-08-01 出版日期:2009-03-15 发布日期:2010-12-29
  • 通讯作者: 肖玉良 E-mail:111925wj@163.com
  • 基金资助:

    国家自然科学基金重点项目(50233020)

Synthesis of Carboxymethyl Chitosan by Phase Transfer Catalytic Method and Its Characterization

XIAO Yu-liang,LI Yu-qin,XIA Cheng-cai,YOU Gui-rong,HAN Jun-fen,DUAN Gui-yun,ZHANG Hai-xia   

  1. (College of Pharmaceutical Sciences, Taishan Medical University, Taian 271000, China)
  • Received:2008-03-13 Revised:2008-08-01 Online:2009-03-15 Published:2010-12-29
  • Contact: XIAO Yu-liang E-mail:111925wj@163.com

摘要:

采用相转移催化法制备了羧甲基壳聚糖,考察了催化剂种类、催化剂使用量、反应温度、反应时间和溶剂中水醇比对羧甲基壳聚糖取代度(DS)和溶解性的影响。得到最佳反应条件为:以6% 的苄基三乙基氯化铵(TEBA)作催化剂,反应温度55℃,反应时间4h,溶剂中水醇比1:4(V/V),羧甲基壳聚糖的取代度(DS)和溶解率分别达到1.147 和98.87%。并采用傅立叶红外光谱法及X 光电子能谱分析法对产物结构进行了表征,结果表明壳聚糖羧甲基化反应主要是发生在C6 位上的- OH 基团上。

关键词: 羧甲基壳聚糖, 相转移催化, 表征

Abstract:

In this study, preparation of carboxymethyl-chitosan (CMC) with phase transfer catalyst was described. Firstly, the effects of carboxymethylation conditions on the degree of substitution (DS) and solubility of CMC were investigated, and the optimum catalyst, reaction temperature, reaction time, volume ratio of water to alcohol are 6% of triethylbenzylammonium (TEBA), 55 ℃, 4 h and 1:4, respectively. Under these conditions, the DS and the solubility of CMC reach 1.147 and 98.87%, respectively. Then the chemical construction of CMC was characterized by Fourier-transformed infrared (FTIR) and X-ray photoelectron spectroscopy (XPS). The results showed that the carboxymethylation mainly occurs on hydroxy group in C6 site of chitosan.

Key words: carboxymethyl chitosan (CMC), phase transfer catalysis, characterization

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