Premium
Foam inhibition in an aqueous sodium dodecylbenzene sulfonate solution by poly(dimethylaminoethyl methacrylate)
Author(s) -
Matsumoto Tsunetaka,
Baccay Romeo A.,
Okubo Masayoshi,
Nakamae Katsuhiko
Publication year - 1978
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.1978.070220604
Subject(s) - dodecylbenzene , aqueous solution , sulfonate , methacrylate , defoamer , surface tension , polymer , chemistry , chemical engineering , sodium , polymer chemistry , materials science , chromatography , dispersant , organic chemistry , copolymer , dispersion (optics) , physics , quantum mechanics , optics , engineering
The mechanism of foam inhibition in an aqueous sodium dodecylbenzene sulfonate (DBSNa) solution by temperature‐sensitive, water‐soluble poly(dimethylaminoethyl methacrylate) (PDM) was investigated. The solution's foam collapsing rate, % transmittance, surface tension, pH, temperature, and degree of hydrophobicity of PDM showed that aging a PDM–DBS solution 125 to 280 hr produced a turbid solution and effectively inhibited foaming. Likewise, controlling the pH at 4 ≤ pH ≤ 7 and increasing the hydrophobicity of PDM enhanced the foam‐inhibiting action of the polymer. The reaction between DBSNa and PDM was temperature dependent and the temperature effect was almost reversible. When compared with other available commercial antifoaming agents, PDM was found most effective in suppressing foam formation in aqueous DBSNa solution.