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Simulation of the precipitation of silver bromide photographic emulsions
Author(s) -
Margolis Geoffrey,
Gutoff Edgar B.
Publication year - 1974
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690200306
Subject(s) - silver bromide , nucleation , precipitation , bromide , aqueous solution , solubility , crystal (programming language) , halide , silver nitrate , thermodynamics , chemistry , crystal growth , silver halide , gelatin , inorganic chemistry , crystallography , emulsion , nuclear chemistry , organic chemistry , meteorology , physics , computer science , programming language
Nucleation and crystal growth processes involved in the batch precipitation of photographic emulsions by the addition of silver nitrate to an aqueous solution of bromide and gelatin have been reasonably successfully modeled. Simulation predicts the known increase in average crystal size with increased addition time, with increased temperature, and with increased halide levels. Solubility is related to crystal size by the Gibbs‐Thomson equation. The predicted decrease in the number of crystals during the course of precipitation is similar to published data, but there are quantitative differences. The model is very sensitive to variations in the constant in the growth equation, but not to variations in the constants in the nucleation equation.