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A Study of the Metastable Zone in Nylon 12‐Toluene Solution
Author(s) -
Renjun Feng
Publication year - 1992
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170270516
Subject(s) - supersaturation , metastability , toluene , saturation (graph theory) , solubility , crystallization , thermodynamics , nylon 6 , chemistry , reaction rate constant , analytical chemistry (journal) , materials science , chromatography , kinetics , organic chemistry , polymer , physics , mathematics , combinatorics , quantum mechanics
The metastable zone for a nylon 12‐toluene solution was determined in an established constant cooling rate apparatus. Supersaturation solubility curves and the equilibrium solubility curve are unparallel one to another. The metastable zone width under seeded conditions is dependent on the cooling rate, the retention time and the saturation temperature. And the metastable zone width under unseeded conditions is dependent on the cooling rate, the agitation rate and the saturation temperature. Through constant cooling rate crystallization experiments, two empirical correlations pertaining to the metastable zone of the solution have been found.