کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
675684 | 1459627 | 2006 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Calorimetric study of alternating copolymer of bicyclo[2,2,1]-hepta-2,5-diene and carbon monoxide in the range from T â 0 to 510 K
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
By adiabatic vacuum and dynamic calorimetry, the temperature dependence of heat capacity for alternating copolymer of bicyclo[2,2,1]-hepta-2,5-diene and carbon monoxide has been determined over the 6-510 K range with an uncertainty of 0.2-0.5% between 6 and 350 K and 0.5-1.5% from 330 to 510 K. In the above temperature ranges, the physical transformations of the copolymer have been detected and their thermodynamic characteristics have been estimated. In a calorimeter with a static bomb and an isothermal shield, the energy of combustion of the copolymer has been measured at 298.15 K. Based on the experimental data, the thermodynamic functions of the copolymer, namely, the heat capacity Cpâ(T), enthalpy H°(T) â H°(0), entropy S°(T) â S°(0) and Gibbs function G°(T) â H°(0) have been determined for the range from T â 0 to 400 K. The enthalpy of combustion ÎcH° and the thermodynamic parameters ÎfH°, ÎfS°, ÎfG° and lnKfâ of reaction of formation of the copolymer from simple substances at T = 298.15 K and p = 0.1 MPa have been calculated. The data cited in the present work and literature data were used to calculate the thermodynamic characteristics of the alternating copolymerization in bulk of bicyclo[2,2,1]-hepta-2,5-diene and CO in the 0-340 K range at standard pressure as well as to compare them with the thermodynamic characteristics of the synthesis of isomeric polyketone.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thermochimica Acta - Volume 451, Issues 1â2, 1 December 2006, Pages 156-162
Journal: Thermochimica Acta - Volume 451, Issues 1â2, 1 December 2006, Pages 156-162
نویسندگان
N.N. Smirnova, L.V. Nikishchenkova, T.A. Bykova, T.G. Kulagina, G.P. Belov, E.V. Novikova,