微波辐射_____微波辐射；壳聚糖；羧甲基壳聚糖；制备

微波辐射制备羧甲基壳聚糖研究初探

http://www.100md.com 《广东药学院学报》 2003年第4期

微波辐射,,微波辐射；壳聚糖；羧甲基壳聚糖；制备,1实验部分,2结果与讨论,3结论,参考文献

     摘要在微波辐射下用氯乙酸对壳聚糖进行化学改性，探讨微波条件下，反应物投料比﹑反应时间﹑反应温度等对羧甲基壳聚糖产率和粘度的影响。应用红外光谱分析确认在壳聚糖上引入了羧甲基基团。当氨基葡萄糖单元与氯乙酸的摩尔比为1∶4，反应时间为20 min，反应温度为65 ℃时，所得的羧甲基壳聚糖产率和粘度较高。

    关键词微波辐射；壳聚糖；羧甲基壳聚糖；制备

    Preparation of carboxymethyl chitosan under microwave irradiation

    GUAN Li1,WANG Yanmei*，LI Guoming2,WU Kunxian1

    (1.Guangdong College of Pharmacy,Guangzhou,Guangdong 510240;2.South China Normal University,Guangzhou,Guangdong 510631)

    Abstract The carboxymethyl chitosan was prepared from chloroacetic acid and chitosan under microwave irradiation. The effects of concentration of chloroacetic acid,treatment time and temperature on the yield and viscosity were studied. The products were analyzed by infrared spectrum. The results showed that the optimum reaction conditions were as follows: the molar ratio of glucosamine(the basic unit of chitosan) to chloroacticacid was 1∶4; the reaction temperature was 65°C; the carboxymethylation time was 20 min.

    Key words microwave irradiation； carboxymethyl chitosan； chitosan； preparation

    微波是一种频率为300 Hz至300 Gz之间的电磁波 ......

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