Effects of Ethylene Oxide Spacer Length on Solution Properties of Water-Soluble Fluorocarbon-Containing Hydrophobically Associating Poly(Acrylic Acid-co-R_f-PEG Macromonomer)  

作　　者：杜立斌 庄东青 刘寿平 章云祥 

机构地区：[1]Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China

出　　处：《Chinese Journal of Chemistry》2003年第6期698-705,共8页中国化学（英文版）

基　　金：ProjectsupportedbytheNationalNaturalScienceFoundationofChina (No .5 9973 0 2 5 )

摘　　要：Poly(acrylic acid)s (PAAs) modified with a series of fluorocarbon group (R f) end capped Poly(ethylene glycol) (PEG) macromonomers (number of ethylene oxide unit: 1, 9, 23, 45) and corresponding copolymers without fluorocarbon end groups were synthesized. It was found that the effect of the hydrophobic association of fluorocarbon groups on the solution viscosity prevailed over that of the hydrogen bond between grafted PEG and the backbone. Rheological measurement on the aqueous solutions of these poly(acrylic acid co R f PEG macromonomer)s demonstrated that the best thickening performance was shown when the number of ethylene oxide unit (EO number) was 23.Poly(acrylic acid)s (PAAs) modified with a series of fluorocarbon group (R f) end capped Poly(ethylene glycol) (PEG) macromonomers (number of ethylene oxide unit: 1, 9, 23, 45) and corresponding copolymers without fluorocarbon end groups were synthesized. It was found that the effect of the hydrophobic association of fluorocarbon groups on the solution viscosity prevailed over that of the hydrogen bond between grafted PEG and the backbone. Rheological measurement on the aqueous solutions of these poly(acrylic acid co R f PEG macromonomer)s demonstrated that the best thickening performance was shown when the number of ethylene oxide unit (EO number) was 23.

关 键 词：fluorocarbon  containing PEG macromonomer spacer rheological property hydrophobic association 

分 类 号：TQ316.6[化学工程—高聚物工业]