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pH-Sensitive Materials with Controllable pH Phase Transition Value
Abstract:
Novel pHsensitive methacrylate-based (co)polymers with pendent tertiary amine groups were prepared by free radical polymerization of monomer 2-(dimethylamino)ethyl methacrylate (DMA) and 2-(Dibutylamino)ethyl methacrylate (DBA). These polymers are pH sensitive in aqueous solution, which was studied by titration, transmittance measurements experiment. The pH responsive polymers dissociate at lower pH value because of the electrostatic repulsion and aggregate above their pH responsive value induced by hydrophobic interaction of pendent group. The pH responsive value of (co)polymers can be controlled by ratio of DMA and DBA. These novel polymers have great potential application for biomedicine.
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219-222
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Online since:
January 2015
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© 2015 Trans Tech Publications Ltd. All Rights Reserved
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