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Detergency of Soluble Sodium Silicate
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1999, v.12 no.1, pp.13-21
Ha,
Y., Park,
K., &
Seo,
M.
(1999). Detergency of Soluble Sodium Silicate. Analytical Science and Technology, 12(1), 13-21.
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Abstract
Silicate used as laundry detergent builder was good for pH buffering capacity and solubility but calcium-ion binding capacity and surfactant adsorption ability were lower. As <TEX>$SiO_2/Na_2O$</TEX> molar ratio became higher, pH buffering capacity and ion exchange ability were lower and surfactant adsorption ability was little higher. Anionic surfactant LAS (linear alkylbenzene sulphonate), nonionic surfactant LA-9 (lauryl alcohol EO-9) were used to investigate the detergency performance. Zeolite was better than sodium silicate in detergency performance. In case of LAS, detergency performance was good when <TEX>$SiO_2/Na_2O$</TEX> molar ratio was lower. In case of LA-9, detergency performance was similar without discrimination of molar ratio of <TEX>$SiO_2/Na_2O$</TEX>.
- keywords
- silicate, pH buffering capacity, surfactant adsorption, detergency
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