Chem. J. Chinese Universities ›› 2010, Vol. 31 ›› Issue (7): 1471.

• Articles • Previous Articles     Next Articles

Synthesis and Environmental Sensitivity of P(MMA-co-MAh)-g-mPEG

LIU Li1,2, LIU Xiao-Li2, YANG Meng2, LIU Feng-Qi2*   

  1. 1. College of Chemical Engineering, Changchun University of Technology, Changchun 130012, China;
    2. College of Chemistry, Jilin University, Changchun 130012, China
  • Received:2009-09-21 Online:2010-07-10 Published:2010-07-10
  • Contact: LIU Feng-Qi. E-mail: liufengqi@jlu.edu.cn
  • Supported by:

    国家自然科学基金(批准号: 20274014)资助.

Abstract:

Grafted amphiphilic copolymers P(MMA-co-MAh)-g-mPEG350 with pH-sensitive and thermosensitive properties were synthesized by “grafting onto” method. The methoxy poly(ethylene glycol)(mPEG) of different contents were grafted onto random copolymers of methyl methylacrylate with maleic anhydride. The copolymers structures were characterized by FTIR and 1H NMR. Transmittance of aqueous solutions of these graft copolymers were measured by UV-Vis spectorphotometer. The result shows that these graft copolymers exhibit lower critical solution temperatures(LCST). These LCST′s are sensitive to the change of pH and salinity. The LCST′s can be adjusted by the content of hydrophilicity.

Key words: Grafted amphiphilic copolymer; pH-sensitivity; Thermosensitivity; Lower critical solution tempe-rature

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