Stress-strain dependence for soy-protein nanofiber mats

S. Khansari, S. Sinha-Ray, A. L. Yarin, B. Pourdeyhimi

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34 Citations (Scopus)


Soy proteinnylon 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 proteinnylon 6 nanofiber mats are also compared to those for solution blown pure nylon 6 mats, which were produced and tested in the same way.

Original languageEnglish
Article number044906
JournalJournal of Applied Physics
Issue number4
Publication statusPublished - 2012 Feb 15

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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