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Effect of poly(acrylic acid) end‐group functionality on inhibition of calcium oxalate crystal growth
Author(s) -
Wallace Andrew D.,
AlHamzah Ali,
East Christopher P.,
Doherty William O. S.,
Fellows Christopher M.
Publication year - 2009
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.31657
Subject(s) - crystallization , acrylic acid , crystallite , desorption , oxalate , turbidimetry , adsorption , chemistry , crystal growth , polymer chemistry , calcium oxalate , inorganic chemistry , organic chemistry , crystallography , chromatography , polymer , copolymer
A number of series of poly(acrylic acids) (PAA) of differing end‐groups and molecular weights prepared using atom transfer radical polymerization were used as inhibitors for the crystallization of calcium oxalate at 23 and 80°C. As measured by turbidimetry and conductivity and as expected from previous reports, all PAA series were most effective for inhibition of crystallization at molecular weights of 1500–4000. However, the extent of inhibition was in general strongly dependent on the hydrophobicity and molecular weight of the end‐group. These results may be explicable in terms of adsorption/desorption of PAA to growth sites on crystallites. The overall effectiveness of the series didn't follow a simple trend with end‐group hydrophobicity, suggesting self‐assembly behavior or a balance between adsorption and desorption rates to crystallite surfaces may be critical in the mechanism of inhibition of calcium oxalate crystallization. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010