Journal
MACROMOLECULAR BIOSCIENCE
Volume 4, Issue 6, Pages 575-578Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/mabi.200400003
Keywords
fast responsive; hydrogels; polyamidoamine dendrimer; poly(N-isopropylacrylamide); temperature-sensitive
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Novel temperature-sensitive poly(N-isopropyl-acrylamide)/amine-terminated polyamidoamine dendrimer G6-NH2 hydrogels with fast responsive properties were synthesized by forming semi-interpenetrating polymeric networks. In contrast to the conventional PNIPA hydrogel, these new gels showed rapid shrinking rate at the temperature above lower critical solution temperature (LCST), and exhibited higher equilibrium swelling ratio at room temperature. All these properties might be attributed to the incorporation of polyamidoamine dendrimer G6-NH2, which forms water-releasing channels and increases the hydrophilicity of PNIPA network. The novel hydrogels have potential applications in drug and gene delivery.
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