Viscometry of anisotropic solutions of poly-p-phenyleneterephthalamide in sulfuric acid
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چکیده
منابع مشابه
Dynamic Rheological Studies of Poly(p-phenyleneterephthalamide) and Carbon Nanotube Blends in Sulfuric Acid
We have studied the dynamic scanning of liquid-crystalline (LC) poly(p-phenyleneterephthalamide) sulfuric acid (PPTA-H(2)SO(4)) solution, and its blend with single-walled carbon nanotubes (SWNTs), by using a flat plate rotational rheometer. The effects of weight concentration and molecular weight of PPTA, as well as operating temperature, on dynamic viscoelasticity of the PPTA-H(2)SO(4) LC solu...
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Natural abundance NMRmethods were employed to analyze static and dynamic properties of poly(p-benzamide), the parent compound of the aramide family of polymers, dissolved in absolute sulfuric acid. Quantitative determinations of order in the liquid crystal phases arising in these systems were carried out with the aid of bidimensional 13C NMR data collected in the solid phase and of total line s...
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ژورنال
عنوان ژورنال: Journal of Applied Polymer Science
سال: 1978
ISSN: 0021-8995,1097-4628
DOI: 10.1002/app.1978.070220926