کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5204386 1381959 2006 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hydrolytic degradation of poly[(4,4′-oxydiphenylene)pyromellitic amido acid] in concentrated sulphuric acid and in dimethylformamide via hydrodynamic investigations
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Hydrolytic degradation of poly[(4,4′-oxydiphenylene)pyromellitic amido acid] in concentrated sulphuric acid and in dimethylformamide via hydrodynamic investigations
چکیده انگلیسی

Translational diffusion and viscosity measurements were performed for poly[(4,4′-oxydiphenylene)pyromellitic amido acid] in DMF, LiCl/DMF, and 96% H2SO4 solutions to characterise the rate of the polymer degradation in 96% H2SO4 in comparison with its relative stability in organic solutions. The hydrodynamic data were obtained in different stages of hydrolytic polymer degradation at various temperatures from 20 to 80 °C. The mechanism of the degradation is discussed as well as the possibility of molecular investigations of the polymer under conditions of quasi-stable solution.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Degradation and Stability - Volume 91, Issue 11, November 2006, Pages 2691-2697
نویسندگان
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