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Preparation and pH‐responsive performance of silane‐modified poly(methylacrylic acid)
Author(s) -
Bai Shiyang,
Zhang Huang,
Sun Jihong,
Han Jing,
Guo Yueyue
Publication year - 2014
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.40403
Subject(s) - swelling , silane , materials science , methacrylic acid , poly(methacrylic acid) , polyelectrolyte , polymer chemistry , polymerization , radical polymerization , aqueous solution , chemical engineering , nuclear chemistry , chemistry , composite material , polymer , organic chemistry , engineering
The poly(methylacrylic acid) modified by silane [poly(methylacrylic acid‐ co ‐vinyl triethoxylsilane) (PMAA)] was prepared via free‐radical polymerization with different mass ratios of methylacrylic acid to vinyl triethoxylsilane (VTES). The swelling performance of the prepared PMAA in different solutions with various pH values, salt species (NaCl and CaCl 2 ), and concentrations was investigated in detail. The results indicated that the introduction of silane boosted the stability of the obtained PMAA in aqueous solutions in the presence of an increased quantity of VTES additive. Meanwhile, the different swelling ratios of PMAA in various pH solutions showed a high pH responsivity. In addition, we found that when the PMAA underwent a number of swelling–deswelling cycles, it demonstrated the good reversibility properties when the pH value of the swelling medium was changed from 9.0 to 1.4. Moreover, the swelling mechanism of PMAA in different solutions with different pH values was investigated. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131 , 40403.