Abstract
Isothermal kinetics of polymerizations of N,N⿲-bismaleimide-4,4⿲-diphenylmethane (BMI) with barbituric acid (BTA) (BMI/BTA=2/1 (mol/mol)) in N-methyl-2-pyrrolidone in the temperature range 373⿿403K were studied. A mechanistic model involving the competing Michael addition and free radical polymerization mechanisms was developed. With the knowledge of the kinetic parameters for Michael addition polymerization obtained from our previous work, this kinetic model in combination with experimental data obtained from DSC and 1H-NMR measurements was used to evaluate the kinetic parameters of free radical polymerization of BMI initiated by BTA. The model adequately predicted the kinetics of polymerization of BMI/BTA at different temperatures. Key kinetic parameters for the free radical polymerization mechanism were then determined. At high temperature, free radical polymerization predominates in the reaction system. By contrast, at low temperature, Michael addition polymerization competes more effectively with free radical polymerization.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the Taiwan Institute of Chemical Engineers
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
