کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10152055 | 1666146 | 2018 | 35 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Product analysis, electrical and dielectric properties depending on thermal influence of poly(N-isopropyl acrylamide)/graphite-filled composite
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The ac dielectric and electrical behaviors of the pure poly(N-isopropylacrylamide) (PNIPAM) and PNIPAM/8% by wt graphite-filled composite at room temperature and that of partially degraded polymer were investigated. TGA measurements showed that thermal degradation of the pure PNIPAM and PNIPAM/8% by wt graphite-filled composite polymers were a single-stage process under nitrogen atmosphere. Phenomenon of depolymerization from thermal degradation of PNIPAM and PNIPAM/8% by wt graphite-filled composite was revealed as a significant difference in comparison to polyacrylamide and other analogous. In degradation studies, while the N-isopropylacrylamide was detected as 25% by mole among products of degradation of PNIPAM/8% graphite-filled composite, this event was 9% by mole for that of pure PNIPMA. The major evolved products were found to be molecules such as N-isopropylacrylamide, cyclic-imides, diisopropylamine, dimer and trimer. Degradation mechanism of the polymer was briefly suggested and evaluated the relationship between structures of the pure PNIPAM and PNIPAM/8% graphite-filled composite polymers.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thermochimica Acta - Volume 669, 10 November 2018, Pages 66-79
Journal: Thermochimica Acta - Volume 669, 10 November 2018, Pages 66-79
نویسندگان
Fatih Biryan, Abdullahi Musa Abubakar, Kadir Demirelli,