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Transport of penetrants in the macromolecular structure of coals. V. Anomalous transport in pretreated coal particles
Author(s) -
Lucht Lucy M.,
Peppas Nikolaos A.
Publication year - 1987
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.1987.070330511
Subject(s) - penetrant (biochemical) , pyridine , macromolecule , coal , swelling , chemistry , materials science , relaxation (psychology) , polymer chemistry , chemical engineering , organic chemistry , composite material , biochemistry , engineering , psychology , social psychology
Dynamic swelling studies were performed on well‐characterized coal particles treated in various ways. Pyridine was the penetrant and all studies were performed at 35°C. The transport behavior was compared for untreated, pyridine‐extracted, oxidized and alkylated samples. Data analysis using an exponential equation of the penetrant uptake as a function of time and a relaxation‐controlled analysis showed that the pyridine transport mechanism was non‐Fickian or Case‐II transport, and that it was only slightly affected by the pretreatment of the coal samples.