Physical properties of dendritic macromolecules: a study of glass transition temperature
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The variation of glass transition temperature with molecular weight and chain-end composition for dendritic polyethers and polyesters was studied. A new and modified version of the chain-end free volume theory was derived to account for the large number of chain ends in these unusual structures. For both homopolymers and a variety of novel block copolymers, the experimental variation in Tg with molecular weight was found to correlate well with theoretical predictions, thus demonstrating the wide applicability of the chain-end free volume theory. The glass transition was found to be greatly affected by the nature of the chain ends and internal monomer units. © 1993, American Chemical Society. All rights reserved.
author list (cited authors)
Wooley, K. L., Hawker, C. J., Pochan, J. M., & Frechet, J.