The influence of adding functionality to dispersant and particle core compositions in non-aqueous dispersion polymerization
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Authors
Yang, Weiwei
Hutchinson, Robin A
Date
2017-05-01
Type
journal article
Language
Keyword
Functionalized copolymers , Hydroxyl functionality , Macromer dispersant , Non-aqueous dispersion , Solubility parameters
Alternative Title
Abstract
Nano-sized polyacrylate colloids (<200nm) at high solids level (~60wt%) are prepared via non-aqueous dispersion (NAD) semibatch polymerization using n-butyl methacrylate (BMA)-based macromer dispersants of varying chain lengths and levels of functionality provided by incorporation of 2-hydroxyethyl methacrylate (HEMA) comonomer. The effect of building the complexity of the core polymer recipe from methyl acrylate homopolymer to a five-monomer composition is systematically studied. While average particle size increased with the introduction of functional comonomers, the resulting NAD systems remained stable for all core compositions using both BMA macromers and a copolymer macromer containing 5mol% HEMA. However, introduction of the HEMA functionality to the dispersant at levels of >5mol% led to destabilization of the dispersion. The polarity differences between the core compositions and dispersant polymers and the mixed continuous medium, as represented by Hansen solubility parameters, are qualitatively used to interpret the nucleation of particles and the effectiveness of the dispersants.
Description
The final publication is available at Elsevier via http://dx.doi.org/10.1016/j.reactfunctpolym.2017.01.005 ©2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
Citation
Yang, W., & Hutchinson, R. A. (2017). The influence of adding functionality to dispersant and particle core compositions in non-aqueous dispersion polymerization. Reactive and Functional Polymers, 114, 31–37. doi:10.1016/j.reactfunctpolym.2017.01.005
Publisher
Elsevier BV