Thiophene-Based Poly(Arylene Ether Ketone)s: Polymerization of Bis(5- Chlorothienyl-2) Ketone with 4,4'-Isopropylidenediphenol
Abstract
Our research is focused on the general synthesis of a new class of wholly aromatic thermoplastic engineering polymers based on novel thiophene monomers. Structural aerospace and automotive composites that utilize thermoplastic matrix resins have the potential to offer significant performance and processing advantages over thermosetting matrix resins; therefore, research is targetted for the development of such advanced thermoplastic resins using new chemistry methodologies. Introduction of 2,5-thiophene units would allow for the synthesis of novel thermoplastic poly(arylene ether ketone)s possessing a wider processing window related to the unique molecular geometry of the 2,5 thiophene moiety; its nonlinearity has a 148 deg angle which is between the 180 deg and 120 deg angles associated with the commercially utilized p- and m- phenylene units. Our primary focus was to synthesize direct analogues of ICI's Poly(ether ether ketone), PEEK, elucidating whether nucleophilic aromatic substitution reactions on activated halothiophenes proceed with sufficient conversions to allow for the synthesis of novel thermoplastic poly(arylene ether ketone)s. The short-term objective was to synthesize model compounds by direct nucleophilic substitution of chlorine on thiophene by addition of the activated 2-benzoyl-5- chlorothiophene to t-butylphenol treated with potassium carbonate.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 20, 1992
- Accession Number
- ADA251948
Entities
People
- J. M. Desimone
- S. C. Berndt
- V. V. Sheares
Organizations
- University of North Carolina at Chapel Hill