Full Content is available to subscribers

Subscribe/Learn More  >

Modeling Stress Relaxation Behaviour of a Hygrothermally Aged PC/ABS Polymer Blend

[+] Author Affiliations
Mojtaba Haghighi-Yazdi, Pearl Lee-Sullivan

University of Waterloo, Waterloo, ON, Canada

Paper No. IMECE2010-40547, pp. 477-486; 10 pages
  • ASME 2010 International Mechanical Engineering Congress and Exposition
  • Volume 9: Mechanics of Solids, Structures and Fluids
  • Vancouver, British Columbia, Canada, November 12–18, 2010
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4446-5
  • Copyright © 2010 by ASME


The competing effects of physical aging and moisture absorption on the relaxation behaviour of a polycarbonate/acrylonitrile-butadiene-styrene (PC/ABS) polymer blend have been investigated. Physical aging was simulated by thermal aging the blend at temperatures up to 80 °C which is below the glass transition temperature of ABS, i.e., the lower of the two components. Another set of samples was exposed to six different relative humidity and temperature combinations. Progressively aged samples in dry and hygrothermal aging conditions were then subjected to stress relaxation tests. Momentary master curves were developed by applying time/aging-time and time/moisture superposition principles for dry and hygrothermally aged specimens, respectively. The experimental data were also fitted with the Kohlrausch-Williams-Watts (KWW) model to determine the initial modulus, relaxation time constant and shape parameter. Comparisons of the first two parameters between thermally aged and hygrothermally aged conditions suggest that physical aging processes dominate absorbed moisture effects in terms of influencing viscoleastic behaviour, especially when the aging temperature approaches 80 °C.

Copyright © 2010 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In