کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5189887 1381193 2005 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhancing polyurethane properties via soft segment crystallization
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Enhancing polyurethane properties via soft segment crystallization
چکیده انگلیسی
Semi-crystalline polyester diols with relatively high melting points and enthalpies of crystallization are shown to form nearly co-continuous lamellar structures in thermoplastic polyurethanes using polyether soft segments. This high aspect ratio crystalline structure results in materials with exceptional tensile and elastic properties compared to materials made with conventional semi-crystalline soft segments such as polycaprolactone or polybutylene adipate. Additions of semi-crystalline soft segment to foam formulations also result in increased hardness measured by standard foam hardness tests. Halpin-Tsai and percolation model analyses of the results suggest that the crystalline regions exert a global influence on the elastomer structure.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 46, Issue 23, 14 November 2005, Pages 10158-10166
نویسندگان
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