New Polybenzimidazole Architectures by Diels Alder Polymerization
Abstract
Due to their high value as flame and heat resistant materials and high cost, improved methods for preparing polybenzimidazoles, particularly those with added substituent to improve processability. are desirable. This project was a proof of principle study to determine if Diels-Alder polymerization of monomers bearing imidazole and thiophene dioxide groups could be used to prepared polybenzimidazoles or related polymers. To this end. several new monomers were synthesized and polymerized. These include the first known bis-thiophene dioxide monomer. which was successfully copolymerized with a diacetylene comonomer. and a bis-imidazole monomer, 1.4-di(1H-imidazol-2-yl)benzene. whose copolymer with the aforementioned bisthiophene dioxide monomer was the first polybenzimidazole ever prepared by a Diels-Alder cycloaddition reaction. Despite validation of the project thesis, monomers with more substituent are necessary to achieve the goal of enhanced processability.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 14, 2012
- Accession Number
- ADA557830
Entities
People
- Douglas A. Loy
Organizations
- University of Arizona