کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5183603 1381023 2012 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Silks cope with stress by tuning their mechanical properties under load
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Silks cope with stress by tuning their mechanical properties under load
چکیده انگلیسی

We compare the nonlinear mechanical properties of silks under load with the quasi-static and isothermal dynamic mechanical properties of nylon as well as human hair. For silk and nylon, the dynamic storage modulus increases with increasing static load, while the quasi-static modulus decreases considerably through yield. However, the modulus of hair decreases irreversibly for both loading conditions. For silk, the increase in storage modulus is only partially reversible after high-loading and is accompanied by a non-recoverable strain. For nylon, the dynamic modulus increase is largely reversible after increased static loading up to a second high stress yield point, where modulus then decreases. Taken together, our data suggest that the dynamic modulus increases with increasing order in the silk and nylon structures under static load, whereas the morphology of hair is gradually degraded under load.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 53, Issue 13, 7 June 2012, Pages 2717-2726
نویسندگان
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