高等学校化学学报

高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (1): 99.

• 研究论文 • 上一篇    下一篇

两亲性羧甲基壳聚糖衍生物的表面活性研究

隋卫平1, 蒋晓杰1, 翟利民1, 陈国华2   

  1. 1. 济南大学化学与化工学院, 济南 250022;
    2. 中国海洋大学化学化工学院, 青岛 266003
  • 收稿日期:2003-02-12 出版日期:2004-01-24 发布日期:2004-01-24
  • 通讯作者: 隋卫平(1966年出生),女,博士,副教授,从事表面活性剂及壳聚糖改性研究.E-mail:wpsui@263.net E-mail:wpsui@263.net
  • 基金资助:

    山东省教育厅科技计划(批准号:J01C13);山东省优秀中青年科学家科研奖励基金(批准号:02BS108)资助

Surface Activity of Amphiphilic Derivatives of Carboxymethylchitosan

SUI Wei-Ping1, JIANG Xiao-Jie1, ZHAI Li-Min1, CHEN Guo-Hua2   

  1. 1. School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China;
    2. College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266003, China
  • Received:2003-02-12 Online:2004-01-24 Published:2004-01-24

PDF (PC)

被引次数

82

摘要： 将羧甲基壳聚糖与烷基缩水甘油醚在碱性条件下反应,合成了一系列新型的两亲性化合物(2-羟基-3-烷氧基)丙基-羧甲基壳聚糖,对其表面性质的研究结果表明,对同一衍生物,在所研究范围内,取代度越高,降低表面张力的能力及效率越高;对同一取代度的不同衍生物,疏水链越长,降低表面张力的能力越强;对链较短和取代度较大的衍生物,如(2-羟基-3-丁氧基)丙基羧甲基壳聚糖(HBP-CMCHS),在外加电解质存在时溶液的表面张力曲线出现2个转折点,表明可能有分子内胶束形成;而对链较长的衍生物,如(2-羟基-3-十二烷氧基)丙基羧甲基壳聚糖(HDP-CMCHS),则无明显的临界胶束浓度,有外加电解质时表面张力曲线也未出现2个转折点.

关键词: 两亲性衍生物, 羧甲基壳聚糖衍生物, 表面活性, 表面张力

Abstract: A new type of amphiphilic derivatives of carboxymethylchitosan(CMCHS) was prepared by reaction of CMCHS with alkyl glycidol ether. The surface properties were studied by means of surface tension. It was found that for the same chitosan derivative, within some substitution degree(SD), the efficiency and effectiveness of the decreasing of surface tension increased with the increase of SD. For the similar SD of the same series of carboxymethylchitosan derivatives, the longer the amphiphilic group chain length, the more the surface activity. When the SD of the carboxymethylchitosan derivatives was high and the amphiphilic group chain length was not very long, two transitions points appeared in the surface tension vs. concentration curve, which means the possibilities of the formation of intramolecular micelle. These phenomena did not appear for the derivatives with less SD and long amphiphilic group chain length.

Key words: Amphiphilic derivatives, Derivatives of carboxymethylchitosan, Surface activity, Surface tension

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