کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5182954 1381004 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mechanical properties of individual electrospun PA 6(3)T fibers and their variation with fiber diameter
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Mechanical properties of individual electrospun PA 6(3)T fibers and their variation with fiber diameter
چکیده انگلیسی

Young's modulus and yield strength of individual electrospun fibers of poly(trimethyl hexamethylene terephthalamide) (PA 6(3)T) have been obtained in uniaxial extension. The Young's modulus is found to exhibit values in excess of the isotropic bulk value, and to increase with decreasing fiber diameter for fibers with diameter less than roughly 500 nm. The yield stress is also found to increase with decreasing fiber diameter. These trends are shown to correlate with increasing molecular level orientation within the fibers with decreasing fiber diameter. Using Ward's aggregate model, the correlation between molecular orientation and fiber modulus can be explained, and reasonable determinations of the elastic constants of the molecular unit are obtained.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 52, Issue 10, 4 May 2011, Pages 2295-2301
نویسندگان
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