Advanced Polymer Architectures with Stimuli-Responsive Properties Starting from Inimers

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• 作者：Katrien V. Bernaerts ; Charles-Andr&#xe9 ; Fustin ; C&#xe9 ; cile Bomal-D’ ; Haese ; Jean-Fran&#xe7 ; ois Gohy ; Jos&#xe9 ; C. Martins ; Filip E. Du Prez
• 刊名：Macromolecules
• 出版年：2008
• 出版时间：April 8, 2008
• 年：2008
• 卷：41
• 期：7
• 页码：2593 - 2606
• 全文大小：435K
• 年卷期：v.41,no.7(April 8, 2008)
• ISSN：1520-5835

文摘

Novel, well-defined, temperature- and/or pH-sensitive copolymer architectures were prepared by atom transfer radical (co)polymerization (ATRP) of a temperature-sensitive poly(methyl vinyl ether) (PMVE) macromonomer, obtained via living cationic polymerization of MVE initiated with inimer 3,3-diethoxypropyl acrylate. Temperature-sensitive comb architectures were obtained by ATRP homopolymerization (Me₆TREN/CuBr in toluene) of the PMVE macromonomer. ATRP copolymerization of the PMVE macromonomer with tert-butyl acrylate, a hydrolyzable precursor for pH-sensitive acrylic acid (AA), gives statistical graft copolymers. Palm-tree block copolymers containing a linear PtBA (PAA after hydrolysis) block and a branched block based on PMVE macromonomers were also prepared and fully characterized. Using turbidimetry, dynamic light scattering, FT-IR, and NMR, the temperature and/or pH responsiveness of those (co)polymer architectures are compared with the properties of previously synthesized linear block copolymers containing PMVE and PtBA or PAA.