کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5189157 1381178 2006 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Morphology and crystal structures of poly(2,6-naphthalene terephthalate) and poly(2,6-naphthalene naphthalate)
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Morphology and crystal structures of poly(2,6-naphthalene terephthalate) and poly(2,6-naphthalene naphthalate)
چکیده انگلیسی
The morphology and crystal structures of poly(2,6-naphthalene terephthalate) (PNT) and poly(2,6-naphthalene naphthalate) (PNN), prepared by confined thin film melt/solution polymerization (CTFMP/CTFSP), were characterized by transmission electron microscopy, electron diffraction and molecular modeling. The unit cells of PNT and PNN are both monoclinic (P121/a1 space group) with parameters a=8.18 Å, b=5.80 Å, c=14.9 Å and β=101.9° for PNT, and a=7.85 Å, b=5.97 Å, c=17.1 Å and β=99.5 for PNN, respectively. Simulated ED patterns from the proposed unit cells agree well with the observed ED patterns. The crystal structures of PNT and PNN are also compared with those of poly (p-phenylene naphthalate) (PPN) and poly(2,6-oxynaphtalate) (PONA).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 47, Issue 15, 12 July 2006, Pages 5467-5477
نویسندگان
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