PHYSICAL-PROPERTIES OF DENDRITIC MACROMOLECULES - A STUDY OF GLASS-TRANSITION TEMPERATURE

abstract

• 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.

authors

• Wooley, Karen

published proceedings

• MACROMOLECULES

altmetric score

• 3

author list (cited authors)

• WOOLEY, K. L., HAWKER, C. J., POCHAN, J. M., & FRECHET, J.

citation count

• 271

complete list of authors

• WOOLEY, KL||HAWKER, CJ||POCHAN, JM||FRECHET, JMJ

publication date

• March 1993

publisher

• American Chemical Society (ACS)  Publisher

published in

• MACROMOLECULES  Journal

Digital Object Identifier (DOI)

• 10.1021/ma00059a006

start page

• 1514

end page

• 1519

volume

• 26

issue

• 7

URL

• http://dx.doi.org/10.1021/ma00059a006