Synthesis of nylon 4 through the use of the carbon dioxide/potassium pyrrolydonate catalyst system with and without added 18‐Crown‐6 ether activator | Zendy

Huang Robert Y. M. | Zendy; Rhim JiWon | Zendy

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Synthesis of nylon 4 through the use of the carbon dioxide/potassium pyrrolydonate catalyst system with and without added 18‐Crown‐6 ether activator

Author(s) -

Huang Robert Y. M.,

Rhim JiWon

Publication year - 1989

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.1989.070370105

Subject(s) - potassium hydroxide , catalysis , yield (engineering) , chemistry , ether , crown ether , carbon dioxide , polymer chemistry , polymerization , intrinsic viscosity , potassium , 18 crown 6 , polymer , viscosity , materials science , organic chemistry , composite material , ion , molecule

The anionic polymerization of 2‐pyrrolidone at 40°C via CO 2 /KOH and CO 2 /KOH/18‐Crown ether catalyst for membrane separation purposes was investigated in detail. The effects of reaction time, CO 2 quantity, and potassium hydroxide concentration including crown ether on yield and intrinsic viscosity were also studied. Under the reaction conditions of reaction temperature 40°C, reaction time 24 h, CO 2 quantity of 60 s at a constant flow rate of 3.5 L/min and 1.98 mol % Crown ether a maximum yield of 95.36% of nylon 4 polymer with intrinsic viscosity of 3.28 was obtained.

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