Acta Phys. -Chim. Sin. ›› 1999, Vol. 15 ›› Issue (10): 952-955.doi: 10.3866/PKU.WHXB19991017

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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
  • Contact: Li Hui-Lin


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