Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/41071
DC FieldValueLanguage
dc.contributor.authorChiang, W.H.en_US
dc.contributor.author邱信程zh_TW
dc.contributor.authorHsu, Y.H.en_US
dc.contributor.authorLou, T.W.en_US
dc.contributor.authorChern, C.S.en_US
dc.contributor.authorChiu, H.C.en_US
dc.date2009zh_TW
dc.date.accessioned2014-06-06T08:04:54Z-
dc.date.available2014-06-06T08:04:54Z-
dc.identifier.issn0024-9297zh_TW
dc.identifier.urihttp://hdl.handle.net/11455/41071-
dc.description.abstractTwo graft copolymers comprising acrylic acid (AAc) and 2-methacryloylethyl acrylate (MEA) units as the backbone and either poly(N-isopropylacrylamide) (PNIPAAm) alone or both PNIPAAm and monomethoxypoly(ethylene glycol) (mPEG) as the grafts were synthesized. These copolymers in the aqueous phase (pH 5.0) underwent thermally induced self-assembly into micelles. For the copolymer containing PNIPAAm grafts only, extensive interactions between un-ionized AAc residues and PNIPAAm segments occurred, thereby rendering polymer backbones partially embedded within the hydrophobic cores of thermally induced micelles. This then led to bulk (core/shell) cross-linking of micelles upon radical polymerization of the MEA units within the micellar assemblies in the aqueous phase. By contrast, with mPEG being incorporated into the copolymer, association of the backbones with PNIPAAm is greatly retarded. As a result, three-layer onion-like polymeric micelles consisting of hydrophobic PNIPAAm cores surrounded by AAc-rich shells and hydrophilic mPEG coronas were achieved. Shell cross-linked micelles were then produced via polymerization of the MEA units confined to the AAc/MEA-rich shell regions. The presence or absence of mPEG in the PNIPAAm-containing graft copolymer plays a crucial role in determining the morphological structure of micelles and the structural responses of the subsequently cross-linked micelles to pH and temperature changes.en_US
dc.language.isoen_USzh_TW
dc.relationMacromoleculesen_US
dc.relation.ispartofseriesMacromolecules, Volume 42, Issue 10, Page(s) 3611-3619.en_US
dc.relation.urihttp://dx.doi.org/10.1021/ma900263jen_US
dc.subjectresponsive triblock copolymeren_US
dc.subjectlinked micellesen_US
dc.subjectgold nanoparticlesen_US
dc.subjectdiblock copolymersen_US
dc.subjectstructural-changesen_US
dc.subjectblock-copolymersen_US
dc.subjectraften_US
dc.subjectsynthesisen_US
dc.subjectshellen_US
dc.subjectphen_US
dc.subjectcoreen_US
dc.titleEffects of mPEG Grafts on Morphology and Cross-Linking of Thermally Induced Micellar Assemblies from PAAc-Based Graft Copolymers in Aqueous Phaseen_US
dc.typeJournal Articlezh_TW
dc.identifier.doi10.1021/ma900263jzh_TW
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.openairetypeJournal Article-
item.cerifentitytypePublications-
item.fulltextno fulltext-
item.languageiso639-1en_US-
item.grantfulltextnone-
Appears in Collections:化學工程學系所
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