Donor Acceptor Polymerization Chemistry as a Vehicle to Low Energy Cure Matrix Resins
Abstract
A recent study conducted by the National Materials Advisory Board has identified a need for matrix resins that can be prepared at ambient or near ambient room temperatures for onsite airfoil repair. This research project focuses on this problem through the synthesis of network polymers using donor/ acceptor polymerization chemistry. The di and tetrafunctional donors used in this study are based on vinyl ether chemistry, and di and tetrafunctional maleimides are the acceptors. Our first objective has been the synthesis of necessary donor and acceptor monomers and so we have proceeded to study a variety of synthetic approaches to create these needed compounds. In the case of donor monomers we have selected a palladium-assisted vinyl exchange reaction as the best route. Using this chemistry we have been able to successfully prepare 15 monomers based on vinyl ether chemistry. We have also synthesized an equal number of maleimides using a conventional synthetic chemistry, that being reaction of maletic anaydride with amine, followed by condensation of the maleimic acid to the maleimide itself. This chemistry requires a great deal of patience, yet if done properly, yield the necessary monomers in high purity. Keywords: Donor acceptor polymerization, Bismaleimides, Vinyl ethers, Net work polymers, Maleimides vinylether, Copolymers.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1987
- Accession Number
- ADA190119
Entities
People
- Choon H. Do
- K. B. Wagener
- Mark A. Smith
- Mike Johnson
Organizations
- Wright Laboratory