کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5195299 1381343 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characteristic phase-separated monolayer structure observed for blends of rodlike and flexible polymers
ترجمه فارسی عنوان
ساختار یکپارچه فاز جدا شده مشخص شده برای ترکیبات پلیمرهای پرچرب و انعطاف پذیر است
کلمات کلیدی
پلی کربنات جداسازی فاز، مونولایر،
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی
Monolayers of polymer blends composed of a rodlike polymer (tetra(methoxy)-tetra(octyloxy)-phthalocyaninato-polysiloxane (PcPS) or poly(γ-benzyl-L-glutamate)(PBLG)) and a flexible polymer (poly(isobutylvinyl ether)(PIBVE)) were studied by atomic force microscopy (AFM), transmission electron microscopy (TEM) and the surface pressure-area isotherm measurements. These blends were completely phase-separated into two pure monolayer phases at the air-water interface, a quasi-2D system. The AFM observation showed that anisotropic string-shaped domains of PcPS formed a networklike structure in the PIBVE matrix monolayer. In the PcPS domains, polymer chains were observed to be aligned parallel to each other along the domain contour, forming a 2D nematic phase. The domain-shape anisotropy decreased with decreasing chain length of PcPS. In addition, PBLG, another rodlike polymer also formed similar anisotropic domains in the PIBVE matrix, indicating the universality of the observed morphologies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 42, Issue 5, March 2001, Pages 2007-2013
نویسندگان
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