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 Wysłany: Nie 11:58, 13 Lut 2011 |
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PEG as a pore-forming agents on poly (N-isopropylacrylamide-co-acrylic acid) hydrogel properties
versities (Chem), 2004,25:23702374 ZhangXZ, YangYY, ChungTS, MaKX. Langmuir, 200l, I7 :6094-6099FeilH, BaeYH, FeijenJ, KimSW. Maeromolecules, 1993,26:2496 ~ 2500ZhangJT,[link widoczny dla zalogowanych], HuangSW, ZhuoRX. MacromolChemPhys, 2004. 205:107-113Ma ~ uoES. TanakaT. JChemPhys. 1988,89:1695 ~ l703ShibayamaM, NagaiK. Maeromolecu1es. 1999.32:7461-7468O23456789123456789} i13 of Zhang Jiantao,[link widoczny dla zalogowanych], etc.: PEG as a pore-forming agents on poly (N isopropylacrylamide one. CO an acrylic acid) hydrogel properties 423EFFECTOFPEGASPORE-Fo puzzle DGAGENTSONTHEPROPERT pan SOFPOROUSPOLY (N- IS0lPROPYLACYLAMII) E-co. ACRYLICACID) HYDROGELSZHANGJiantao, HUANGShiwen, XUEYanan,[link widoczny dla zalogowanych], ZHUORenxi (KeyLaboratoryofBiomedicalPolymers, MinistryofEducation, DepartmentofChemistry, WuhanUniversity,[link widoczny dla zalogowanych], Wuhan430072) AbstractAseriesofporouspoly (N-isopropylacrylamide-CO-acrylicacid) [P (NIPA-CO-AA)] hydrogelswerepreparedbyradicalpolymerizationusingPEG400, 1000,6000 aspore-formingagentsduringthereactionprocess. SEMmacrographsrevealedthattheporesizeofthehydrogelscouldbemodulatedbyadjustingthemolecularweightortheamountofPEG. TheswellingratiooftheporousgelsatroomtemperaturewashigherthanthatoftheconventionalP (NIPA-CO-AA) hydrogelsduetotheporousmicrostmcture, Whenthehydrogelsweretransferredtoanaqueousmediumof60%, theyshrankrapidlytoanequilibriumstateandexhibitedfasterresponseproperties. What'Smore, theswellingratioandresponsiverateincreasedwithelevatingthemolecularweightortheamountofPEG. Thepreparedmacroporoushydrogelshavepotentialapplicationsincontrolledreleaseofmacromoleeularactiveagents, KeywordsTemperature-sensitive, Poly (N-is0propylacry1amide), Poly (acrylicacid), Hydrogel, Macroporous, Poly (ethyleneglyco1)
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