摘要
A series of urethane acrylate anionomers(PU) in molar ratio of n (PEG)∶ n (DMPA)∶ n (HMDI)∶ n (2 HPA)= 0 3∶0 7∶(1 2～1 5)∶(0 44～1 1) were prepared in 3 steps. The structure of the prepolymer was confirmed by FT IR and 1 H NMR analysis. pH sensitive cross linked films were then obtained by UV polymerization of UAA. The swelling property of the films with respect to pH was much affected by the composition of the prepolymer. The film could swell and deswell rapidly and reversibly in buffer solutions of pH=3 and pH=11.
A series of urethane acrylate anionomers(PU) in molar ratio of n (PEG)∶ n (DMPA)∶ n (HMDI)∶ n (2 HPA)= 0 3∶0 7∶(1 2～1 5)∶(0 44～1 1) were prepared in 3 steps. The structure of the prepolymer was confirmed by FT IR and 1 H NMR analysis. pH sensitive cross linked films were then obtained by UV polymerization of UAA. The swelling property of the films with respect to pH was much affected by the composition of the prepolymer. The film could swell and deswell rapidly and reversibly in buffer solutions of pH=3 and pH=11.
出处
《应用化学》
CAS
CSCD
北大核心
2003年第6期609-610,共2页
Chinese Journal of Applied Chemistry
关键词
聚氨酯
膜
PH响应性
polyurethane,film,pH sensitivity
