Investigations on nylon 4 membranes. Synthesis and transport properties. I. Synthesis of nylon 4 polymer | Zendy

Huang R. Y. M. | Zendy; Kim U. Y. | Zendy; Dickson J. M. | Zendy; Lloyd D. R. | Zendy; Peng C. Y. | Zendy

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Investigations on nylon 4 membranes. Synthesis and transport properties. I. Synthesis of nylon 4 polymer

Author(s) -

Huang R. Y. M.,

Kim U. Y.,

Dickson J. M.,

Lloyd D. R.,

Peng C. Y.

Publication year - 1981

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.1981.070260407

Subject(s) - gel permeation chromatography , yield (engineering) , nylon 6 , polymer , nylon 66 , molar mass distribution , polymer chemistry , membrane , polymerization , catalysis , solvent , intrinsic viscosity , permeation , materials science , chemistry , chemical engineering , organic chemistry , composite material , polyamide , biochemistry , engineering

The synthesis of nylon 4 (polypyrrolidone) by the anionic polymerization of 2‐pyrrolidone through the use of the CO 2 /potassium pyrrolidonate catalyst system for use in preparing polymer membranes for separation purposes was investigated in detail. The effects of the quantity of CO 2 , the potassium pyrrolidonate catalyst, and the reaction temperature on the yield and molecular weights of the nylon 4 were studied. At reaction temperatures of 50°C and a reaction time of 120 hr, a yield of 50.9% with intrinsic viscosity of 4.42 (corresponding to M n of 108,200 and M w of 135,850) was obtained. The molecular weight distributions of the nylon 4 were determined by gel permeation chromatography (GPC) using m ‐cresol as the eluting solvent and were found to have a relatively narrow distribution.

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