کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5211118 | 1382936 | 2009 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Direct polyamidation in green media: Studies on thermal degradation of novel organosoluble and optically active flame retardant polyamides
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Direct polyamidation in green media: Studies on thermal degradation of novel organosoluble and optically active flame retardant polyamides Direct polyamidation in green media: Studies on thermal degradation of novel organosoluble and optically active flame retardant polyamides](/preview/png/5211118.png)
چکیده انگلیسی
This manuscript explores in detail the polycondensation reactions of novel dicarboxylic acid and numerous aromatic diamines in imiazolium-based ionic liquids. The novel optically active aromatic polyamides (PA)s with flame retardancy properties were prepared via a oil bath heating method using a mixture of 1,3-dipropylimidazolium bromide ionic liquid and triphenyl phosphite (TPP) both as reaction media and activator. The main advantage of this polycondensation reaction is that this procedure is a one-pot reaction and we do not need to prepare diacid chloride. These polymers presented high thermal stability, with the decomposition temperature being above 400 °C, although slightly diminished compared with those of related aromatic PAs which do not contain any pendent groups. Furthermore, the interpretation of kinetic parameters (E, ÎS, ÎG, ÎH and reaction mechanism) of thermal decomposition stages of aforementioned PAs have been evaluated. For this purpose thermogravimetric analysis is a technique widely used because of its simplicity and the information afforded by a simple program.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Reactive and Functional Polymers - Volume 69, Issue 3, March 2009, Pages 206-215
Journal: Reactive and Functional Polymers - Volume 69, Issue 3, March 2009, Pages 206-215
نویسندگان
Shadpour Mallakpour, Mehdi Taghavi,