کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5142078 | 1496026 | 2017 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microwave-assisted synthesis and characterization of l-lysine-derived optically active poly (hydrazide-imide)s
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
l-Lysine hydrochloride was transformed to ethyl l-lysine dihydrochloride. This salt was reacted with trimellitic anhydride to yield the corresponding diacid (1). Interfacial polycondensation results a series of novel poly (hydrazide-imide)s (PHIa-f). These polymers have inherent viscosities in the range of 0.10-0.37 dl gâ1, display optical activity, and are readily soluble in polar aprotic solvents. They start to decompose (T10%) above 245 °C and display glass-transition temperatures at around 125.9 °C. All of the above polymers were fully characterized by UV, FT-IR and 1H NMR spectroscopy, elemental analysis, TGA, DSC, inherent viscosity measurement and specific rotation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Arabian Journal of Chemistry - Volume 10, Supplement 1, February 2017, Pages S1-S9
Journal: Arabian Journal of Chemistry - Volume 10, Supplement 1, February 2017, Pages S1-S9
نویسندگان
Saeed Zahmatkesh, Ashkbous Yazdanpanah,