Viscoelastic Properties of Melts of 'RADEL R' Polysulfone Fractions-Reference-Cited by-同舟云学术

Viscoelastic Properties of Melts of 'RADEL R' Polysulfone Fractions

Published:1990-06 Issue:3 Volume:2 Page:165-179
ISSN:0954-0083
Container-title:High Performance Polymers
language:en
Short-container-title:High Performance Polymers

Author:

Roovers J.¹,Toporowski P.M.¹,Ethier R.¹

Affiliation:

1. NRCC 32511, Division of Chemistry, National Research Council of Canada, Ottawa, Ontario KIA OR6, Canada

Abstract

The linear viscoelastic properties of a series of RADEL R polyethersulfone fractions have been studied. The molecular weight of the fractions ranged from 2.4 X 103 to 7.2 X 104. The RADEL R polyethersulfone is a thermorheologically complex material. After correction to iso-free volume, it has been found that 1/0∝M3.4,w in agreement with the relation expected for entangled flexible polymers. Below Mw = 10 000, 1/0∝ M2.0 w. From integration under the loss peak of high molecular weight fractions it is found that the plateau modulus G°N=3.6x 107. It is calculated that at 282°C the molecular weight between entanglements is Me=1550. The high plateau modulus is related to the molecular parameters of RADEL R polyethersulfone. Both the Graessley-Edwards model and the Lin model are discussed for a number of polymers that contain phenylene groups in the main chain.

Publisher

SAGE Publications

Subject

Materials Chemistry,Organic Chemistry,Polymers and Plastics

Link

http://journals.sagepub.com/doi/pdf/10.1177/152483999000200302

Reference32 articles.

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2. Entangled linear, branched and network polymer systems — Molecular theories

3. The Properties of 'RADEL R' Polysulfone

4. Melt viscosity behavior of some engineering thermoplastics

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