Viscoelastic Behavior of Amorphous Polymers near the Glass Temperature

Lack of thermorheological simplicity and possible effects of the molecular weight distribution in the softening dispersion of linear amorphous polymers are demonstrated with viscoelastic data on polymethylacrylate PMA and polyvinylacetate PVAc. Superposition of the short time portion of the softenin...

Full description

Saved in:
Bibliographic Details
Published in:Journal of polymer science. Part B, Polymer physics Polymer physics, 1988-03, Vol.26 (3), p.473-489
Main Authors: Plazek, Donald J., Rosner, Mark J., Plazek, Daniel L.
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Properties and characterization
Rheology and viscoelasticity
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Lack of thermorheological simplicity and possible effects of the molecular weight distribution in the softening dispersion of linear amorphous polymers are demonstrated with viscoelastic data on polymethylacrylate PMA and polyvinylacetate PVAc. Superposition of the short time portion of the softening transitions of the retardation spectra of PMA, PVAc, polystyrene, and amorphous polypropylene APP indicates that the local molecular mobility is a constant at Tg within experimental uncertainty. The general features of the retardation spectra of linear amorphous polymers are discussed.
ISSN:0887-6266
1099-0488
DOI:10.1002/polb.1988.090260301