✦ LIBER ✦

Multi-Component Kinetic Modeling for Controlling Local Compositions in Thermosensitive Polymers

✍ Scribed by Todd Hoare; Daniel McLean

Book ID: 102495192
Publisher: John Wiley and Sons
Year: 2006
Tongue: English
Weight: 299 KB
Volume: 15
Category: Article
ISSN: 1022-1344
DOI: 10.1002/mats.200600031

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Summary: An explicit terminal copolymerization kinetic model accounting for the copolymerization of up to four different comonomers is developed and applied to model the conversion profiles and local compositional gradients in functionalized PNIPAM‐based polymer and hydrogel systems. The kinetics of the functional comonomer(s) have a large influence on both the mole fraction and chain distribution of functional groups in polymers. Strategies are developed to synthesize polymers with uniform compositions by applying semi‐batch techniques or via copolymerization of multiple monomers with the same target functionality but with divergent reactivities relative to NIPAM. Synthetic protocols are also designed to maximize the compositional uniformity and randomness of ampholytic polymers.

Instantaneous mole fractions of monomers in polymers as a function of the overall monomer conversion for the copolymerizations of NIPAM, MBA, and two functional monomers: MMA and acrylamide.

magnified imageInstantaneous mole fractions of monomers in polymers as a function of the overall monomer conversion for the copolymerizations of NIPAM, MBA, and two functional monomers: MMA and acrylamide.

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