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Stress-strain dependence for soy-protein nanofiber mats

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journal contribution
posted on 15.08.2012 by S. Khansari, S. Sinha-Ray, A. L. Yarin, B. Pourdeyhimi
Soy protein=nylon 6 monolithic and core-shell nanofibers were solution-blown and collected on a rotating drum as fiber mats. Tensile tests of rectangular strips of these mats revealed their stress-strain dependences. These dependences were linear at low strains which correspond to their elastic behavior. Then, a plastic-like nonlinearity sets in, which is followed by catastrophic rupture. Parameters such as Young’s modulus, yield stress, and specific strain energy were measured. The results were rationalized in the framework of the phenomenological elastic-plastic model, as well as a novel micromechanical model (the latter attributes plasticity to bond rapture between the individual overstressed fibers in the mat). Besides, the effects of stretching history, rate of stretching, and winding velocity of the collector drum on the strength-related parameters are studied. The results for soy protein=nylon 6 nanofiber mats are also compared to those for solution blown pure nylon 6 mats, which were produced and tested in the same way.

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Copyright (2012) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Journal of Applied Physics(Khansari, S., Sinha-Ray, S., Yarin, A. L., & Pourdeyhimi, B. 2012. Stress-strain dependence for soy-protein nanofiber mats. Journal of Applied Physics, 111(4): 04490 and may be found at (http://jap.aip.org/resource/1/japiau/v111/i4/p044906_s1). DOI: 10.1063/1.3682757

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American Institute of Physics

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en_US

issn

0021-8979

Issue date

01/02/2012

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