CALCULATION OF THE GLASS TEMPERATURES OF POLYMERS HAVING ALKYL SIDE-CHAINS.
Abstract
Four equations, relating the glass temperatures (TG's) of polymers to invariant temperature parameters associated with their constituent groups, but weighted in different ways, were applied to the calculation of the TG's of 7 series of polymers having alkyl side-chains. It is shown that the TG's of the 32 polymers considered may be expressed as the sum of the mole fractions of the parameters within maximum and mean errors of 11 and 4K, respectively. The temperature parameter for a sequence of 3, or more, methylene groups is correctly estimated as 153K. Nearest neighbour interactions, stereoregularity, and crystallinity effects are discussed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1966
- Accession Number
- AD0646298
Entities
People
- W. A. Lee
Organizations
- Royal Aircraft Establishment