کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5186305 1381100 2007 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modelling stiffness of polymer/clay nanocomposites
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Modelling stiffness of polymer/clay nanocomposites
چکیده انگلیسی

Aligned nanoclay particles can be distributed randomly in a polymer matrix even at high volume fractions, but randomly oriented particles cannot be randomly distributed at high volume fractions. Instead a nanocomposite where there are clusters of nearly aligned particles is obtained. The clusters of nearly aligned particles form an effective particle with lower aspect ratio. This phenomenon which produces a nanocomposite of less stiffness than might have been expected has implications for the processing of nanoclay polymer composites.It is shown by comparing two-dimensional to three-dimensional finite element studies that the two-dimensional model, often used because it is simpler, does not accurately predict the stiffness. The Mori-Tanaka model is shown to give a reasonably accurate prediction of the stiffness of clay nanocomposites whose volume fraction is less than about 5% for aligned particles but underestimates the stiffness at higher volume fractions. On the other hand for randomly oriented particles the Mori-Tanaka model overestimates the stiffness of clay nanocomposites.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 48, Issue 3, 26 January 2007, Pages 901-909
نویسندگان
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