Chain Mobility in the Amorphous Region of Nylon 6 Observed under Active Uniaxial Deformation-Reference-Cited by-同舟云学术

Chain Mobility in the Amorphous Region of Nylon 6 Observed under Active Uniaxial Deformation

Published:2000-04-07 Issue:5463 Volume:288 Page:116-119
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Loo Leslie S.¹,Cohen Robert E.¹,Gleason Karen K.¹

Affiliation:

1. Department of Chemical Engineering and Center for Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.

Abstract

A specially designed solid-state deuterium nuclear magnetic resonance probe was used to examine the effect of uniaxial elongation on the chain mobility in the amorphous region of semicrystalline nylon 6. In measurements conducted near the glass transition temperature, there was measurable deformation-induced enhancement of the mobility of the amorphous chains up to the yield point. This enhanced mobility decayed once deformation was stopped. Enhanced mobility was not observed in deformation at room temperature. The mechanics of deformation can be explained by the Robertson model for glassy polymers near the glass transition temperature, which states that applied stress induces liquid-like behavior in the polymer chains.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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