The Effect of Bulky Cyclic Side Groups on the Heat Resistance of Carbochain Polymers,
Abstract
Copolymers of methylidine phthalide with styrene, acrylonitrile, and methyl methacrylate are reported. Measurement of their glass transition temperatures (T sub g s) by thermomechanical and dynamic mechanical techniques leads to an extrapolated value for the T sub g of poly(methylidine phthalide) of 370-380C. The introduction of phthalide groups into carbon-chain polymers so that part of the ring lies in the main chain leads to a sharp increase in heat resistance. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1975
- Accession Number
- ADA018348
Entities
People
- A. A. Askadskii
- G. L. Slonimskii
- S. N. Salazkin
- S. V. Vinogradova
- V. V. Korshak
Organizations
- Royal Aircraft Establishment