کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5183988 1381035 2010 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Natural rubber-clay nanocomposites: Mechanical and structural properties
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Natural rubber-clay nanocomposites: Mechanical and structural properties
چکیده انگلیسی

The mechanical properties of non-vulcanized natural rubber and dialyzed natural rubber-clay nanocomposites have been studied by uniaxial deformations to evaluate the reinforcement efficiency of the clay. We show that while non-rubber molecules contribute to auto-reinforcement, removal of these molecules improves significantly the performance of clay as reinforcement agent. These mechanical properties are discussed in relation to morphological aspects of the clay characterized by TEM and SANS. The nanocomposites prepared by “latex-mixing” with aqueous dispersions of clay are found to contain completely exfoliated clay lamellae in co-existence with tactoids. Improved mechanical properties of the nanocomposites can be modeled by the high aspect ratio of exfoliated clay platelets coupled with immobilized rubber matrix. Interestingly, presence of tactoids does not appear to compromise the excellent reinforcement properties of the exfoliated platelets. At high deformations, strain-induced alignment of the clay exhibits anisotropic scattering, with anisotropy increasing with clay concentration and stretching.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 51, Issue 16, 22 July 2010, Pages 3644-3652
نویسندگان
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