کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5186721 1381111 2006 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Monomer addition programs to generate constant gradient block copolymers
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Monomer addition programs to generate constant gradient block copolymers
چکیده انگلیسی

Equations are derived to calculate the monomer addition programs for semi-batch copolymerization reactions that allow to prepare gradient copolymers and block gradient copolymers containing arbitrary, pre-defined compositional gradients along the polymer chain. An analytical solution is given for the special case of ideal random copolymerizations, and numerical calculations are applied to discuss non-ideal situations. Three classes of addition programs are proposed and discussed with respect to time efficiency. Time-linear addition programs are shown to be insufficient to generate perfectly constant gradients over the whole compositional regions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 47, Issue 19, 7 September 2006, Pages 6880-6894
نویسندگان
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