کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5190974 | 1381223 | 2006 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Infrared spectra and thermal reactivity of ethene copolymers containing 1,2-cyclopropane units
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A comparison between 13C NMR spectra of polymer solutions and Fourier transform infrared spectra of polymer films for several ethene-butadiene copolymers, including most butadiene as 1,2-cyclopropane and 1,2-cyclopentane units, is presented. This spectral comparison, also with the help of a low-molecular-mass model compound specifically synthesized for this purpose, has allowed to locate infrared absorbances associated with the cyclic comonomer units. In particular, a satisfactory calibration curve for evaluation of the amount of the reactive cyclopropane units, from the absorbance of the 1020Â cmâ1 band, has been achieved. An analysis of 1,2-cyclopropane unit reactivity in annealed films, has also pointed out that the presence of remnants of the polymerization catalyst can produce large increase in cyclopropane reactivity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 47, Issue 7, 22 March 2006, Pages 2274-2279
Journal: Polymer - Volume 47, Issue 7, 22 March 2006, Pages 2274-2279
نویسندگان
Gabriella Cavallo, Vincenzo Venditto, Stefania Pragliola, Pasquale Longo, Gaetano Guerra,