Journal ArticleDOI
An intrinsic viscosity‐molecular weight relation for polyacrylonitrile
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TLDR
Weight-average molecular weights and intrinsic viscosities in dimethyl formamide at 25° have been measured for four unfractionated low-conversion acrylonitrile polymers covering the molecular weight range 30 to 250 thousand as mentioned in this paper.Abstract:
Weight-average molecular weights and intrinsic viscosities in dimethyl formamide at 25° have been measured for four unfractionated low-conversion acrylonitrile polymers covering the molecular weight range 30 to 250 thousand. The results follow the equation:read more
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Polymerization of Acrylonltrile—Metal Halides Complexes in the Frozen State. I. Radiation-Induced Polymerization of Acrylonltrile—Zinc Chloride Complex in the Frozen State
Teruhiko Maekawa,Seizo Okamura +1 more
TL;DR: In this paper, the radiation-induced polymerization of acrylonitrlle in frozen aqueous zinc chloride solution was carried out at low temperatures, and a marked enhancement both in the rate and the degree of polymerization was observed at zinc chloride/acrylonitrile molar ratios above unity, which indicated the importance of formation and stabilization of complexes in the frozen medium.
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Transition Metal Chelates as Initiators of Vinyl Polymerization
TL;DR: In this article, the use of transition metal chelates as initiators of free radical polymerization of vinyl monomers is investigated, and the efficiency of individual chelate toward radical polymerisation under variable reaction conditions are discussed.
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Synthesis of ultra-high-molecular-weight polyacrylonitrile by anionic polymerization
TL;DR: In this paper, the anionic polymerization of acrylonitrile in DMF initiated by lithium 1,2-bis(diethylamino)-2-oxoethanolate in the range −60 to 0°C has been studied.
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Peroxo Salts as Initiators of Vinyl Polymerization. 6. Kinetics of Polymerization of Acrylonitrile Initiated by Potassium Peroxodisulfate in Aqueous Medium-Ag+ Catalysis
TL;DR: In this paper, the kinetics of polymerization of acrylonitrile initiated by potassium peroxodisulfate in neutral and acid conditions was studied, and the influence of ionic strength and the catalytic effect of Ag+ on the system were discussed.
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Nature and specificity of active centers in the tris(π-allyl)chromium-pyridine-acrylonitrile system
TL;DR: In this article, a tris-(π-allyl)chromium-pyridine in dimethyl formamide has been used for acrylonitrile polymerization.