کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7824103 1502863 2018 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Study on the oxidative stabilization of polyacrylonitrile fibers by microwave heating
ترجمه فارسی عنوان
بررسی تثبیت اکسیداتیو فیبرهای پلی آکریلونیتریل توسط گرمایش مایکروویو
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی
A microwave heating method was used for oxidative stabilization of polyacrylonitrile (PAN) fibers. The bulk density, chemical structure (FTIR), crystalline structure (WAXD), and skin-core structure were studied. The results show that the intermolecular cyclization happened above 220 °C. From X-ray diffractograms of heat treated fibers, the pre-graphitic structure of stabilized fibers was developed to turbostratic structure. A gradual densification of the fibers occurring was observed after stabilization at a maximum temperature of 240 °C. Microwave heating effectively shortened the thermal stabilization process and the thermal stabilization time by 35 min compared with the conventional thermal stabilization process. The skin-core structure of the stabilized fibers was prohibited by microwave heating.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Degradation and Stability - Volume 150, April 2018, Pages 86-91
نویسندگان
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