Kinetic and structural studies of the copolymerization of the cleavable bismaleimide p-maleimidobenzoic anhydride and styrene

✍ Scribed by Herman Winter; Erik v. d. Vegte; Hans Sijben; Karel Dušek

• Book ID: 102482774
• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 485 KB
• Volume: 197
• Category: Article
• ISSN: 1022-1352
• DOI: 10.1002/macp.1996.021970432

✦ Synopsis

Abstract

The polymerization of a bismaleimide‐styrene system was studied by using a model compound, p‐maleimidobenzoic anhydride, that can be split by simple hydrolysis. Compared to known divinyl systems, a decreased reactivity of the pendant double bonds is observed, probably as a result of cyclization and the steric excluded volume effect. The use of a solvent causes an additional shift of the gel point towards higher conversion. Hydrolysis of gelled material affords soluble p‐maleimidobenzoic acid‐alt‐styrene copolymers. Compared to a linear system, methyl p‐maleimidobenzoate and styrene, the primary chains obtained by hydrolysis show an increased polydispersity, probably due to retardation of bimolecular termination of the free radicals that are attached to the polymer network (gel effect).