کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5206983 1382330 2010 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Test EquipmentCrystallization of polymers at constant and high cooling rates: A new hot-stage microscopy set-up
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Test EquipmentCrystallization of polymers at constant and high cooling rates: A new hot-stage microscopy set-up
چکیده انگلیسی

A prototype hot-stage termed «Polymer High Cooling - Optics» was especially designed to follow on-line the nucleation and growth of crystallizing entities at constant cooling rates. The optically transparent hot-stage receives a gaseous flow at a constant temperature, which passes over the sample. Quiescent crystallization is monitored in real-time at relatively moderate (from 30 to 500 °C/min) and even at high (from 500 to 2000 °C/min) constant cooling rates. As a first application of this new set-up, two relevant parameters of the α-modification of isotactic polypropylene, i.e., the crystallization temperature and the spherulite growth rate, were successfully captured for different constant cooling rates in a reproducible way. The superposition of these newly-collected growth rate data with those compiled by Janeschitz-Kriegl (2006) demonstrates the reliability of our experimental determination.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Testing - Volume 29, Issue 4, June 2010, Pages 445-452
نویسندگان
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