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Diffusion of water and caprolactam in nylon 6 melts
Author(s) -
Nagasubramanian K.,
Reimschuessel H. K.
Publication year - 1973
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.1973.070170603
Subject(s) - caprolactam , nylon 6 , diffusion , kinetic energy , materials science , penetration (warfare) , polymer chemistry , diffusion process , penetration depth , thermodynamics , chemical engineering , chemistry , composite material , polymer , optics , physics , mathematics , knowledge management , innovation diffusion , operations research , computer science , quantum mechanics , engineering
The diffusions of both caprolactam and water from nylon 6 melts have been measured using a semiinfinite geometry. The process involving diffusion and chemical reaction was analyzed utilizing Higbie's penetration model and known kinetic data. The caprolactam and water diffusion coefficients are, respectively, 8 × 10 −8 and 2.5 × 10 −4 cm 2 /sec. Using the data, molecular weight profiles were obtained for both semiinfinite and cylindrical geometries as a function of melt depth and time.