Effect of the size and the distribution of the oxyethylene chain lengths of nonionic emulsifiers on the stability of emulsions

Journal Article · Thu Apr 01 04:00:00 EST 1971 · J. Colloid Interface Sci.; (United States)

DOI:https://doi.org/10.1016/0021-9797(71)90220-7· OSTI ID:5831241

Shinoda, K; Saito, H; Arai, H

The effect of the size and distribution of the hydrophilic chain lengths of polyoxyethylene nonylphenylethers and/or polyoxyethylene dodecylethers on the stability of O/W and W/O type emulsions has been studied, using emulsifiers with the same phase inversion temperature (PIT's). The stability for coalescence increases remarkably with the sizes of the lipophilic and hydrophilic groups and shows maximum stability when the distribution of the hydrophilic groups is fairly broad. The substitution for polyoxyethylene nonylphenylether of calcium dodecylbenzene sulfonate also increased the stability for drainage and coalescence. The PIT or the hydrophilic-lipophilic balance (HLB) and the HLB-number are parallel, provided the distribution of the oxyethylene chains of the emulsifiers is similar. But the HLB-number of an emulsifier of broad distribution is lower than that of the pure emulsifier of the same PIT. If the distribution of the hydrophilic chain is broad, the cloud point is lower and the PIT is higher than those of the corresponding sharply distributed materials. (10 refs.)

• Research Organization: Yokohama Natl Univ., Kao Soap Co. Ltd.
• OSTI ID: 5831241
• Journal Information: J. Colloid Interface Sci.; (United States), Journal Name: J. Colloid Interface Sci.; (United States) Vol. 35:4; ISSN JCISA
• Country of Publication: United States
• Language: English

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CHEMICAL PROPERTIES
CHEMISTRY
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COLLOIDS
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DRUGS
EMULSIFIERS
EMULSIONS
FLUID INJECTION
GELS
HYDROPHYLIC POLYMERS
INTERFACES
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STABILITY
SULFONATES
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WELLS