Thermally Responsive Amphiphilic Conetworks and Gels Based on Poly(N-isopropylacrylamide) and Polyisobutylene

作者: Gergely Kali , Szilvia Vavra , Krisztina László , Béla Iván

DOI: 10.1021/MA400535R

关键词: CopolymerSwellingPoly(N-isopropylacrylamide)Aqueous solutionTetrahydrofuranAmphiphilePolymer chemistrySelf-healing hydrogelsGlass transitionChemistry

摘要: Novel amphiphilic conetworks (APCN) consisting of thermoresponsive poly(N-isoproplyacrylamide) (PNiPAAm) cross-linked by hydrophobic methacrylate-telechelic polyisobutylene (MA-PIB-MA) were successfully synthesized in a broad composition range. The resulting PNiPAAm-l-PIB (“l” stands for “linked by”) obtained radical copolymerization NiPAAm with MA-PIB-MA tetrahydrofuran, cosolvent all the components. Low amounts extractables substantiated efficient network formation. dependent two glass transition temperatures (Tg) DSC analysis indicate microphase separation components without mixed phases. It was found that are uniformly swellable both water and n-hexane; i.e., these new materials behave either as hydrogels or gels aqueous nonpolar media, respectively. uniform swelling polar solutes indicates cocontinuous (bicontinuous) phase morphology. equilibrium s...

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