کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9562400 1382662 2005 45 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermal fractionation of polymers
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Thermal fractionation of polymers
چکیده انگلیسی
Thermal fractionation techniques offer quick and practical ways to evaluate chain heretogeneities in semicrystalline thermoplastic materials by employing carefully designed thermal cycles in a Differential Scanning Calorimeter (DSC). They are particularly useful to study the degree and distribution of short chain branches produced by the copolymerization of ethylene with α-olefins, however, other materials have also been recently examined by these techniques. Thermal fractionation provides an alternative to experimentally more time consuming and complicated fractionation techniques that involve preparative or analytical fractionation in solution. In this review, a particular emphasis is made on the two techniques most commonly applied in the literature: step crystallization from the melt (SC) and successive self-nucleation and annealing (SSA). The numerous applications that have been recently developed are also reviewed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Progress in Polymer Science - Volume 30, Issue 5, May 2005, Pages 559-603
نویسندگان
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