A series of pH-sensitive organic-inorganic copolymer hydrogels involving acrylic acid( AA) and methacyphenyl polyhedral oligomeric silsesquioxane as monomers were named as P( MAPOSS-co-AA). The copolymers were synthesized by free radical solution polymerization using N,N-methylenebisacrylamide( MBA) as cross-linking agents and azodiisobutyronitrile( AIBN) as initiators. The structure and morphology of the hydrogels after swelling were represented through FT-IR,XRD and SEM. The pH-sensitive and drug release ...
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