Abstract
The reactivity of the >CH2 and >NH groups of barbituric acid (BTA) toward the two terminal -C=C- groups of N,N’-bismaleimide-4,4′-diphenylmethane (BMI) was studied with the aid of three model compounds (N-phenylmaleimide (PMI) containg one -C=C- group, 1,3-dimethylbarbituric acid (1,3DMBTA) containing 1 >CH2 group and 5,5-dimethylbarbituric acid (5,5DMBTA) containing 2 >NH groups per molecule) and a molecular probe (hydroquinone (HQ)) that was capable of detecting free radical polymerization. Kinetics studies (DSC) and molecular structure characterization (1H-NMR) showed that it was the >CH2 group of BTA that predominated in the isothermal polymerization of BMI with BTA in N-methyl-2-pyrrolidone in the temperature range 373–403 K. On the contrary, the 2 >NH groups of BTA did not contribute to polymerization of BMI with BTA to an appreciate extent.
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 callDisclaimer: 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.
