کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5206519 | 1382311 | 2013 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermal, rheological and microstructural characterisation of commercial biodegradable polyesters
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Thermal, rheological and microstructural characterisation of commercial biodegradable polyesters Thermal, rheological and microstructural characterisation of commercial biodegradable polyesters](/preview/png/5206519.png)
چکیده انگلیسی
Growing environmental concerns along with new regulations are forcing industries to seek renewable raw materials for their products. This work studies the thermo-rheological properties of commercial biodegradable polyesters: two polylactic acids (PLAs), a polycaprolactone (PCL) and a PLA/PCL blend. Comprehensive material characterization by means of thermogravimetry/differential thermal analysis (TG/DTA), differential scanning calorimetry (DSC), dynamic mechanical thermal analysis (DMTA), frequency sweep tests and polarized light microscopy was carried out. The results have shown that the material thermal/thermo-rheological properties and, therefore, its microstructure, are strongly dependent on its thermal history. This fact arises from the slow recrystallization kinetics shown by PLA. Interestingly, PCL may play the role of nucleating agent for the PLA crystallization, making it faster. This issue must be carefully considered so that a reliable material characterization is achieved.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Testing - Volume 32, Issue 4, June 2013, Pages 716-723
Journal: Polymer Testing - Volume 32, Issue 4, June 2013, Pages 716-723
نویسندگان
F. Cock, A.A. Cuadri, M. GarcÃa-Morales, P. Partal,