کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5189839 | 1381193 | 2005 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The effects of clay on the thermal degradation behavior of poly(styrene-co-acrylonitirile)
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The thermal degradation of poly(acrylonitrile-co-styrene) (SAN) and its clay nanocomposites were studied using TGA/FTIR and GC/MS. Virgin SAN degrades by chain scission followed by β-scission, producing monomers, dimers and trimers. The degradation pathway of SAN in clay nanocomposites contains additional steps; extensive random chain scission, evolving additional compounds having an odd number of carbons in the chain backbones, and radical recombination, producing head-to-head structures. Since acrylonitrile-butadiene-styrene copolymer (ABS) has butadiene rubber incorporated as a grafted phase in a SAN matrix, ABS follows a similar degradation pathway as that of SAN. The effect of butadiene rubber is similar to that of clay, leading to extensive random scission and an increase in thermal stability, but as not effective as clay due to its shorter duration. Eventually, the butadiene rubber phase degrades to small aliphatic molecules.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 46, Issue 23, 14 November 2005, Pages 9702-9713
Journal: Polymer - Volume 46, Issue 23, 14 November 2005, Pages 9702-9713
نویسندگان
Bok Nam Jang, Charles A. Wilkie,