物理化学学报 >> 1999, Vol. 15 >> Issue (10): 952-955.doi: 10.3866/PKU.WHXB19991017

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CMC型高分子表面活性剂在固/液界面上的吸附

曹亚, 李惠林, 张爱民   

  1. 成都科技大学高分子研究所，高分子材料工程国家重点实验室，成都 610065
  • 收稿日期:1998-12-07 修回日期:1999-03-22 发布日期:1999-10-15
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Studies on Adsorption of Carboxy Methyl Cellulose Based Polymeric Surfactants at Solid/Liquid lnterface

Cao Ya, Li Hui-Lin, Zhang Ai-Min   

  1. The State Key Laboratory of Polymer Materials Engineering,Polymer Research Institute of Chengdu University of Science Technology,Chengdu 610065
  • Received:1998-12-07 Revised:1999-03-22 Published:1999-10-15
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关键词: 高分子表面活性剂, 羟甲基纤维素, 吸附机理, 固/液界面

Abstract:

Polymeric surfactants were prepared by ultrasonic copolymerization of carboxy methyl cellulose (CMC) and alkyl poly(etheroxy) acrylate. The adsorption mechanism of CMC based polymeric surfactants at silica gel/water interface was studied by the adsorption isotherms, IR difference spectra. The results show that the adsorptive amount goes up steadily with the increasing of copolymer concentration. Because of multicontact adsorption of copolymers at the surface of silica gel, the strong interaction between copolymers and surface of silica gel (such as hydrogen bond), large amount of polymeric surfactants adsorbs on silica gel. The pH value of copolymer solution plays a great role on adsorption, which indicates that the electrostatic action is the main adsorption mechanism of CMC based polymeric surfactants.

Key words: Polymer surfactant, Carboxy methyl cellulose, Adsorption mechanism, Solid/liquid interface