THE ESR INVESTIGATION ON ABSORPTION BEHAVIOUR OF POLYETHYLENE GLYCOL AT Al2O3/WATER INTERFACE

Chinese Journal of Magnetic Resonance ›› 2000, Vol. 17 ›› Issue (6): 495-499.

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THE ESR INVESTIGATION ON ABSORPTION BEHAVIOUR OF POLYETHYLENE GLYCOL AT Al₂O₃/WATER INTERFACE

LI Guo-xi, DENG Shu-hao, XIA Xiao-hong, KUANG Ya-fei, HUANG Shu-kun

College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082

Received:2000-10-27 Published:2000-12-05 Online:2018-01-11

Abstract

Abstract: The molecular configuration and motion behaviour of polyethylene glycol (PEG) at Al₂O₃/water interface were investigated by using the electron spin resonance (ESR) technique, coupled with spin label technique. The adsorption isotherms of PEG on the Al₂O₃ surface were of S type and the amount of adsorption decreased with the increas of molecular weight. The adsorption of PEG on the Al₂O₃ surface was of the multipoint adsorption, where most segments of PEG were bound to the surface and a few residual segments were dangling in the solution.

Key words: Adsorption, ESR technique, Polyethylene glycol

CLC Number:

O647.31⁺4

LI Guo-xi, DENG Shu-hao, XIA Xiao-hong, KUANG Ya-fei, HUANG Shu-kun. THE ESR INVESTIGATION ON ABSORPTION BEHAVIOUR OF POLYETHYLENE GLYCOL AT Al₂O₃/WATER INTERFACE[J]. Chinese Journal of Magnetic Resonance, 2000, 17(6): 495-499.

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THE ESR INVESTIGATION ON ABSORPTION BEHAVIOUR OF POLYETHYLENE GLYCOL AT Al₂O₃/WATER INTERFACE

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