کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1400848 984665 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Morphology studies of polyaniline lengthy nanofibers formed via dimers copolymerization approach
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Morphology studies of polyaniline lengthy nanofibers formed via dimers copolymerization approach
چکیده انگلیسی

In this paper, two different aniline dimers, N-phenyl-1,2-phenylenediamine (2-PPD) and N-phenyl-1,4-phenylenediamine (4-PPD) were used as starting monomers in polyaniline (PANI) synthesis. It was found that 2-PPD dimer alone produced only an amorphous PANI oligomer with a flaky morphology, while the 4-PPD provided either linear nanofiber or a spaghetti-like hollow nanofiber structures comprising of worm-like fibril subunits. By adjusting the molar fed ratio of 4-PPD to 2-PPD in the copolymerization, long PANI nanofibers with length up to tens of microns, bundled together by single PANI fibrils with diameter ca. 3–5 nm, was formed. A possible formation mechanism was proposed taking account of the reactivity difference at positions 4 and 2 on the 4-PPD and 2-PPD, respectively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Polymer Journal - Volume 44, Issue 11, November 2008, Pages 3402–3408
نویسندگان
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