کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5187423 | 1381129 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermal properties of poly(lactic acid) fumed silica nanocomposites: Experiments and molecular dynamics simulations
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Poly(lactic acid) (PLA) fumed silica nanocomposites were prepared by twin-screw extruder. Thermal properties were investigated by experiments and molecular dynamics simulations. Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) were used and 1.34 °C increase of the glass transition temperature (Tg) and 12 °C improvement of thermal stability were observed for PLA-silica nanocomposites as compared to neat PLA. Molecular dynamics simulations (NPT ensemble) were carried out using modified OPLS-AA force field, and Tg and root-mean-square radii of gyration (Rg) were calculated. A good agreement between the simulation results and experiments was obtained.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 49, Issue 9, 29 April 2008, Pages 2381-2386
Journal: Polymer - Volume 49, Issue 9, 29 April 2008, Pages 2381-2386
نویسندگان
Jian Zhang, Jianzhong Lou, Shamsuddin Ilias, Parakalan Krishnamachari, Jizhong Yan,