کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5186126 1381096 2007 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Poly(ethylene terephthalate) (PET) degradation during the Zn catalysed transesterification with dibutyl maleate functionalized polyolefins
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Poly(ethylene terephthalate) (PET) degradation during the Zn catalysed transesterification with dibutyl maleate functionalized polyolefins
چکیده انگلیسی

The chemical reactions occurring during the melt blending between a dibutyl maleate functionalized polyolefin (POF) and poly(ethylene terephthalate) (PET) in the presence of Zn(OOCCH3)2·2H2O were studied as a function of blending conditions, such as the preliminary drying of PET, the presence of a nitrogen flow during blending and the time of blending. The selective extraction of POF/PET 30/70 by weight blends to remove unreacted PET and the determination of its molecular weight by viscosimetric measurements allowed to evaluate both the grafting points' number and the molecular weight of PET. In this way the impact of degradation of PET onto its grafting by transesterification onto POF was investigated. The examined blending conditions were shown to affect both PET degradation and POF-PET copolymer formation. In order to correlate data about macromolecular and morphological structure with the final properties of the blends, differential scanning calorimetry (DSC), scanning electron microscopy (SEM) and tensile tests were also carried out.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 48, Issue 5, 23 February 2007, Pages 1276-1286
نویسندگان
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