کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5183632 | 1381024 | 2012 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A new grafting monomer for synthesizing long chain branched polypropylene through melt radical reaction
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A grafting monomer (p-(3-butenyl)styrene, BS)) containing two carbon-carbon double-bonds with different reactivity was used in melt radical reaction to prepare long chain branched polypropylene (LCB-PP). High-temperature size-exclusion (HT-SEC) coupled with triple detectors, rheometer and NMR were used to characterize the microstructure of the resultant LCB-PP. BS showed double functions in mediating radical reaction, i.e. stabilizing macroradicals and promoting branching reaction. Compared to styrene and divinylbenzene, using BS as a grafting monomer led to the formation of more uniformly distributed LCB structure on the PP backbone. Thus the resultant sample showed strain hardening in extensional flow and had high melt strength.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 53, Issue 1, 5 January 2012, Pages 121-129
Journal: Polymer - Volume 53, Issue 1, 5 January 2012, Pages 121-129
نویسندگان
Zhenjiang Zhang, Dong Wan, Haiping Xing, Zhijie Zhang, Haiying Tan, Lu Wang, Jun Zheng, Yanjie An, Tao Tang,