Poly(methylphenylphosphazene)–Graft–Poly(methyl Methacrylate) Copolymers Via Atom Transfer Radical Polymerization |
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Authors: | Jennifer Nash Cambre Patty Wisian-Neilson |
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Affiliation: | (1) Department of Chemistry, Southern Methodist University, P. O. Box 750314, 3215 Daniel Ave., Dallas, TX 75275-0314, USA |
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Abstract: | Atom transfer radical polymerization (ATRP) was used to graft poly(methyl methacrylate), PMMA, onto poly(methylphenylphosphazene),
(Me)(Ph)PN]
n
, PMPP. A two-step process was used to convert a portion of the methyl substituents on (Me)(Ph)PN]
n
to –CH2C(CH3)2OH groups and then to bromoalkyl groups, –CH2C(CH3)2OC(=O)C(CH3)2Br, the latter of which served as initiation sites for ATRP of methyl methacrylate (MMA) in the presence of CuCl/bipyridine.
Variations in the length of the grafted chains were investigated and the graft copolymers were compared to the parent polymer
and blends of similar composition. The new bromoalkyl derivatives of (Me)(Ph)PN]
n
and the PMPP–graft–PMMA copolymers were characterized by elemental analysis, 1H and 31P NMR spectroscopy, size exclusion chromatography (SEC), and differential scanning calorimetry (DSC).
We dedicate this paper to Professor Harry R. Allcock for consistently maintaining the highest standards in his creative, pioneering
work in inorganic rings and polymers. |
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Keywords: | Poly(alkyl/arylphosphazene) graft copolymer poly(methyl methacrylate) atom transfer radical polymerization |
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