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New amphoteric surfactants containing a 2‐hydroxyalkyl group: IV. Performance of amphoteric surfactant/soap blends
Author(s) -
Takai M.,
Hidaka H.,
Ishikawa S.,
Takada M.,
Moriya M.
Publication year - 1980
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02883784
Subject(s) - pulmonary surfactant , solubility , adsorption , surface tension , chemistry , materials science , chemical engineering , nuclear chemistry , organic chemistry , biochemistry , physics , quantum mechanics , engineering
The performance of new amphoteric surfactants, N ‐(2‐hydroxyethyl)‐ N ‐(2‐hydroxyalkyl)‐β‐alanines (HAA) and their oxyethylated derivatives (HAA‐nEO) was studied in blends with a fatty acid soap. The solubility, foaming power and fabric detergency were measured for blends of (Na‐HAA or Na‐HAA‐nEO)/soap. Furthermore, lime soap dispersing power, toxicity to fish and biodegradability for HAA or HAA‐nEO homologs were examined and evaluated. The blend of tallow soap and not less than 10% of C 12–14 ‐Na‐HAA exhibited better solubility behavior than tallow soap or tallow/coconut oil soap alone. Fabric detergency was improved by blending Na‐HAA with soap. Soil deposition in Na‐HAA/soap or Na‐HAA/soap/Na 2 CO 3 solution was measured. On the basis of the results for: (a) the measurements of redeposition; (b) interfacial tension between oil and water and (c) contact angle between oil and fabric in water, it was presumed that since Na‐HAA adsorbed more or less in preference to soap on the surface of fabric in water, soil redeposition would be prevented in the Na‐HAA/soap detergent solution.