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Sorption and diffusion of weak acids in nylon—dual sorption and diffusion model
Author(s) -
Iijima Toshiro,
Miyata Eiji,
Komiyama Jiro
Publication year - 1980
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760200408
Subject(s) - sorption , diffusion , acetic acid , hydrochloric acid , nylon 6 , chemical engineering , diffusion process , materials science , polymer chemistry , inorganic chemistry , chemistry , organic chemistry , thermodynamics , polymer , adsorption , innovation diffusion , physics , engineering , knowledge management , computer science
The sorption and diffusion of fluoro‐substituted acetic acids in nylon‐6 were measured. Hydrochloric acid was also used for comparison purposes. The results were successfully interpreted quantitatively by a dual sorption model, namely by contribution of associated and dissociated species of the acids concerned. As was expected in the case of the sorption of the weakest acid among the acids used, acetic acid, the contribution of associated species is large. The analysis of the diffusion behavior of acetic acid has shown that the contribution of associated species plays a dominant role in the diffusion process in nylon.