Study of the radical polymerization mechanism and its application in the preparation of high-performance PMMA by reactive extrusion† † Electronic supplementary information (ESI) available. See DOI: https://doi.org/10.1039/d2ra06441c

ABSTRACT: In this study, the mechanism of radical polymerization was further explored by pre-dissolving different polymers and studying the kinetics of the bulk polymerization of methyl methacrylate (MMA) under shear-free conditions. Based on the analysis of the conversion and absolute molecular weight, it was found that, contrary to the shearing effect, the inert polymer with viscosity was the key factor to preventing the mutual termination of radical active species and reducing the termination rate constant kt. Therefore, pre-dissolving the polymer could increase the polymerization rate and molecular weight of the system simultaneously, making the polymerization system enter the automatic acceleration zone faster and greatly reducing the generation of small molecular weight polymers, leading to a

SUBMITTER: Shi H 

PROVIDER: S-EPMC9986722 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature