کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1397120 984218 2005 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Non-isothermal crystallization behavior of polypropylene with nucleating agents and nano-calcium carbonate
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Non-isothermal crystallization behavior of polypropylene with nucleating agents and nano-calcium carbonate
چکیده انگلیسی

The non-isothermal crystallization kinetics of isotactic polypropylene (iPP) and nucleated iPP was investigated by DSC. The crystalline morphology of iPP was observed by polarized light microscopy. It was found that the crystallization rate increased with the addition of nanometer-scale calcium carbonate (nm-CaCO3) particles. The addition of dibenzylidene sorbitol (DBS) could greatly reduce the spherulite size of iPP. The crystallization temperature for the iPP with DBS was higher than for non-nucleated iPP. DBS was an effective nucleating agent for iPP. The results of measurements suggested that there was a coordinated action to the crystallization of iPP when the organic nucleating agents (DBS) and nm-CaCO3 were added to iPP together. Comparison to the modified Avrami equation and Ozawa equation, another method—Mo’s method can describe the non-isothermal crystallization behavior of iPP and nucleated iPP more satisfactorily.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Polymer Journal - Volume 41, Issue 11, November 2005, Pages 2753–2760
نویسندگان
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