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Stresses in shape memory polymer-matrix nanocomposites for biomedical applications

Published

Author(s)

Davor Balzar, G Stefanic, Kenneth Gall, Martin Dunn, Yiping Liu

Abstract

We report on the residual stresses in amorphous shape memory polymers reinforced with SiC particles. After 50 % compression of the composite material at 25 ¿C, the SiC particles exhibit a compressive stress, which is almost completely released during heated recovery at 120 ¿C. The residual stresses in SiC hexagonal (6H) phase were estimated through the average change of the unit-cell volume. Lattice parameters of the starting SiC powder, as-prepared composites, deformed, and recovered composites were obtained by Rietveld refinement of diffraction patterns. The values of the internal residual stresses in the particles are compared to values based on micromechanics calculations.
Citation
Adv. XRay Anal.

Keywords

biomedical applications, composites, Rietveld refinement, shape-memory polymers, strain/stress

Citation

Balzar, D. , Stefanic, G. , Gall, K. , Dunn, M. and Liu, Y. (2004), Stresses in shape memory polymer-matrix nanocomposites for biomedical applications, Adv. XRay Anal. (Accessed June 18, 2024)

Issues

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Created May 31, 2004, Updated October 12, 2021