Wet spinning of poly-m-phenylene isophthalamide fiber. (Part 1). Coagulation phenomena of poly-m-phenylene isophthalamide/N-methylpyrrolidone solution.
نویسندگان
چکیده
منابع مشابه
Tailoring Mechanically Robust Poly(m-phenylene isophthalamide) Nanofiber/nets for Ultrathin High-Efficiency Air Filter
Effective promotion of air filtration applications proposed for fibers requires their real nanoscale diameter, optimized pore structure, and high service strength; however, creating such filter medium has proved to be a tremendous challenge. This study first establishes a strategy to design and fabricate novel poly(m-phenylene isophthalamide) nanofiber/nets (PMIA NF/N) air filter via electrospi...
متن کاملTheoretical studies of poly(para-phenylene vinylene) (PPV) and poly(para-phenylene) (PPP)
The electroluminescence from PPV and the blue light emission from PPP constitute exciting subjects of study. The band gap of these semiconducting polymers can be engineered in a wide range from red to ultraviolet by structural changes made on them. In the present work, we present a theoretical approach based on semiempirical and ab initio total energy and force calculations of PPV and PPP. We p...
متن کاملSYNTHESIS AND CHEMICAL PROPERTIES OF POLY(ARYLENEETHYNYLENE)S WITH AN OLIGO(p-PHENYLENE) GROUP AT m-PHENYLENE LINKAGE
The Pd-complex-catalyzed polymerization of 2,7-dibromo-9,9-dihexylfluorene, 2,5-dibromo-3-hexylthiophene, and 1,4-dibromo-2,5-dioctyloxybenzene with 3,5-diethynyl-4-methoxy[1,1';4',1'']terphenyl afforded poly(aryleneethynylene)s (PAEs), Polymer-1, Polymer-2, and Polymer-3, respectively; the Pd-complexcatalyzed polymerization of the same with 1,3-diethynylbenzene afforded PAEs, Polymer-4, Polyme...
متن کاملPhotophysics of Poly(p-Phenylene Vinylene) Films
We report on time resolved photoluminescence (PLRT) measurements in poly(p-phenylene vinylene) (PPV) films irradiated by laser in the presence of air. We observe a PL intensity enhancement and a biexponential decay dynamics of PL signal for all irradiated films. These results can be understood in terms of a chain shortening process due to carbonyl incorporation and formation of an energy profil...
متن کاملConjugated microporous poly(phenylene butadiynylene)s.
High surface area porous poly(phenylene butadiynylene) networks were obtained (BET surface area up to 842 m(2) g(-1)) by the palladium-catalyzed homocoupling of 1,3,5-triethynylbenzene and 1,4-diethynylbenzene.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Sen'i Gakkaishi
سال: 1992
ISSN: 0037-9875,1884-2259
DOI: 10.2115/fiber.48.2_55