کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9748190 1492990 2005 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Pyrolysis and THM reactions of melamine and its resins
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Pyrolysis and THM reactions of melamine and its resins
چکیده انگلیسی
Melamine resins and a melamine polyester copolymer have been investigated with pyrolysis-GC/MS and thermally assisted hydrolysis and methylation (THM). Conventional pyrolysis yields characteristic volatile products only at temperatures above 500 °C and hexamethylenetetramine is the main product. A series of methylated melamines and secondary pyrolysis products were also found. THM yields high amounts of methylated melamines and therefore provides a sensitive method for the detection of melamine in resins and copolymers. Deduced from this results a preparative approach for the synthesis of methylated melamines with aqueous tetramethylammonium hydroxide solution was successfully developed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Analytical and Applied Pyrolysis - Volume 74, Issues 1–2, August 2005, Pages 200-203
نویسندگان
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