کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5204197 1381953 2008 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Studies on the recycling of glycolyzed nylon 66 using novel chain extenders
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Studies on the recycling of glycolyzed nylon 66 using novel chain extenders
چکیده انگلیسی

Nylon 66 (NY66) polymer based products widely used in automotive applications undergo deterioration in their mechanical properties when repeatedly exposed to ethylene glycol (EG) solution. In this study, recycling of glycolyzed NY66 (g-NY66) samples was carried out through melt-compounding with novel isocyanate based chain extenders namely hexamethylene 1,6-dicarbamoyl dicaprolactam (HDC) and tolylene 2,4-dicarbamoyl dicaprolactam (TDC). The recycling efficiency of HDC and TDC on g-NY66 was compared with two commercially available chain extenders 1,1-carbonyl biscaprolactam (CBC) and 1,3-phenylene bis(2-oxazoline) (PBO), and the resultant changes in molecular weight, melt flow, and crystallization behavior in the modified NY66 samples were confirmed from intrinsic viscosity, rheology, and differential scanning calorimetry measurements, respectively. The active ingredients (isocyanate and ɛ-caprolactam) liberated from HDC and TDC during the melt-compounding process reacted efficiently with the end groups of g-NY66 (-OH and -NH2) resulting in improved molecular weight compared to g-NY66 and the results are reported in detail.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Degradation and Stability - Volume 93, Issue 2, February 2008, Pages 392-400
نویسندگان
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