A systematic study of tert-butylacrylamide-methyl acrylate-acrylic acid radical solution terpolymerization

0574205 - ÚMCH 2024 RIV CA eng J - Journal Article
Agboluaje, M. - Kaur, G. - Dušička, E. - Urbanová, A. - Pishnamazi, M. - Horváth, B. - Janata, Miroslav - Raus, Vladimír - Lacík, I. - Hutchinson, R. A.
A systematic study of tert-butylacrylamide-methyl acrylate-acrylic acid radical solution terpolymerization.
Canadian Journal of Chemical Engineering. Roč. 101, č. 9 (2023), s. 5300-5314. ISSN 0008-4034. E-ISSN 1939-019X
Institutional support: RVO:61389013
Keywords : modelling and simulation studies * polymerization kinetics * radical terpolymerization
OECD category: Polymer science
Impact factor: 2.1, year: 2022
Method of publishing: Limited access
https://onlinelibrary.wiley.com/doi/10.1002/cjce.24947

Multi-functional polymers used for personal care products can be synthesized by radical polymerization of acrylic acid (AA) in alcohol/water solutions with non-functional monomers such as methyl acrylate (MA) and N-tert-butylacrylamide (t-BuAAm). However, solvents capable of forming or disrupting hydrogen bonds cause the polymerization kinetics of these monomers to deviate from their polymerization behaviour in bulk and non-polar solvents. In this work, a previous mechanistic model developed for MA/t-BuAAm copolymerization is extended to represent the terpolymerization system MA/t-BuAAm/AA. The additional kinetic coefficients required for the system are estimated from fitting to AA homopolymerizations and AA/MA and AA/t-BuAAm copolymerizations conducted in an ethanol/water solution. In-situ nuclear magnetic resonance (NMR) spectroscopy is used to follow monomer conversions and composition drift behaviour, with the molar mass distributions of the polymer products characterized by size-exclusion chromatography. Although AA is more reactive than MA in non-polar solvents, the reactivities of the two monomers equalize under the experimental conditions examined. Thus, the batch and semi-batch terpolymerization data collected are represented equally well by a reduced acrylate/t-BuAAm copolymerization model and the full terpolymerization implementation.

Permanent Link: https://hdl.handle.net/11104/0345064