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Modeling mechanical aging shift factors in glassy polymers during nonisothermal physical aging. I. Experiments and KAHR‐ate model prediction

Publication ,  Journal Article
Guo, Y; Wang, N; Bradshaw, RD; Brinson, LC
Published in: Journal of Polymer Science Part B: Polymer Physics
February 2009

This article presents experimental results and model predictions of the mechanical response of polymers during nonisothermal physical aging. The nonisothermal temperature history leads to a complex evolution in the aging behavior of the material. To characterize this response, sequential creep tests of polyether‐ether‐ketone (PEEK) and polyphenylene sulfide (PPS) films are performed at various aging times using a dynamic mechanical analyzer. The resulting strain histories are analyzed to determine discrete aging shift factors () for each of the creep tests. The nonisothermal aging response is then predicted using the KAHR‐ model, which combines the KAHR model of volume recovery with a suitable linear relationship between aging shift factors and specific volume. The KAHR‐ model can be utilized to both predict aging response or to determine necessary model parameters from a set of aging shift factor data. For the PEEK and PPS materials considered in the current study, predictions of mechanical response are demonstrated to be in good agreement with the experimental results for several thermal histories. © 2008 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 47: 340–352, 2009

Duke Scholars

Published In

Journal of Polymer Science Part B: Polymer Physics

DOI

EISSN

1099-0488

ISSN

0887-6266

Publication Date

February 2009

Volume

47

Issue

3

Start / End Page

340 / 352

Publisher

Wiley

Related Subject Headings

  • Polymers
  • 09 Engineering
  • 03 Chemical Sciences
  • 02 Physical Sciences
 

Citation

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Guo, Y., Wang, N., Bradshaw, R. D., & Brinson, L. C. (2009). Modeling mechanical aging shift factors in glassy polymers during nonisothermal physical aging. I. Experiments and KAHR‐ate model prediction. Journal of Polymer Science Part B: Polymer Physics, 47(3), 340–352. https://doi.org/10.1002/polb.21643
Guo, Yunlong, Ni Wang, Roger D. Bradshaw, and L Catherine Brinson. “Modeling mechanical aging shift factors in glassy polymers during nonisothermal physical aging. I. Experiments and KAHR‐ate model prediction.” Journal of Polymer Science Part B: Polymer Physics 47, no. 3 (February 2009): 340–52. https://doi.org/10.1002/polb.21643.
Guo Y, Wang N, Bradshaw RD, Brinson LC. Modeling mechanical aging shift factors in glassy polymers during nonisothermal physical aging. I. Experiments and KAHR‐ate model prediction. Journal of Polymer Science Part B: Polymer Physics. 2009 Feb;47(3):340–52.
Guo, Yunlong, et al. “Modeling mechanical aging shift factors in glassy polymers during nonisothermal physical aging. I. Experiments and KAHR‐ate model prediction.” Journal of Polymer Science Part B: Polymer Physics, vol. 47, no. 3, Wiley, Feb. 2009, pp. 340–52. Crossref, doi:10.1002/polb.21643.
Guo Y, Wang N, Bradshaw RD, Brinson LC. Modeling mechanical aging shift factors in glassy polymers during nonisothermal physical aging. I. Experiments and KAHR‐ate model prediction. Journal of Polymer Science Part B: Polymer Physics. Wiley; 2009 Feb;47(3):340–352.
Journal cover image

Published In

Journal of Polymer Science Part B: Polymer Physics

DOI

EISSN

1099-0488

ISSN

0887-6266

Publication Date

February 2009

Volume

47

Issue

3

Start / End Page

340 / 352

Publisher

Wiley

Related Subject Headings

  • Polymers
  • 09 Engineering
  • 03 Chemical Sciences
  • 02 Physical Sciences