Amphiphilic polymer conetworks prepared by controlled radical polymerization using a nitroxide cross‐linker |
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| Authors: | Weijie Zhao Ming Fang Junpo He Junyu Chen Wei Tang Yuliang Yang |
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| Affiliation: | 1. Department of Macromolecular Science, Fudan University, Shanghai 200433, China;2. Key Laboratory of Molecular Engineering of Polymers at Fudan University, Ministry of Education, Shanghai 200433, China |
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| Abstract: | Tandem atom transfer radical polymerization (ATRP) and nitroxide‐mediated radical polymerization (NMRP) were used to synthesize a polystyrene‐co‐poly(acrylic acid) (poly(St‐co‐AA)) network, in which the two components were interconnected by covalent bond. First, a specific cross‐linker, 1,4‐bis(1′‐(4″‐acryloyloxy‐2″,2″,6″,6″‐tetramethylpiperidinyloxy)ethyl)benzene (di‐AET), a bifunctional alkoxyamine possessing two acrylate groups, was copolymerized with tert‐butyl acrylate through ATRP to prepare a precursor gel. The gel was then used to initiate the NMRP of styrene to prepare poly(St‐co‐(t‐BA)) conetwork, in which the cross‐linkages are composed of polystyrene segments. Finally, the poly(St‐co‐(t‐BA)) conetwork was hydrolyzed to produce amphiphilic poly(St‐co‐AA) conetwork. The resulting gels show swelling ability in both organic solvent and water, which is characteristic of amphiphilic conetworks. © 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 48: 4141–4149, 2010 |
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| Keywords: | amphiphiles atom transfer radical polymerization conetworks networks nitroxide‐mediated radical polymerization |
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