PMID- 11161519
OWN - NLM
STAT- Publisher
LR  - 20191120
IS  - 1095-7103 (Electronic)
IS  - 0021-9797 (Linking)
VI  - 234
IP  - 2
DP  - 2001 Feb 15
TI  - Interfacial Behavior of Mixed Systems of Glycerylether-Modified Silicone and 
      Polyoxyethylene-Modified Silicone.
PG  - 337-343
AB  - Undecylglycerylether-modified silicone (GES; the glycerylether-type surfactant 
      with a silicone segment and alkyl chains (carbon number, 11) as the hydrophobic 
      portion) forms a molecular aggregate (M.A.) with a small amount of water. This 
      M.A. is similar to the reversed hexagonal liquid crystal formed by alpha-mono 
      long-chain alkylglycerylether (3-isooctadecyloxy-1,2-propanediol; GE). From the 
      investigation of the phase behavior in the water/GES/polydimethylsiloxane (PDMS) 
      ternary system, a wide three-phase region of water (W)+M.A.+oil (O) was observed. 
      As this M.A. is insoluble in PDMS and easily orients in the interface between 
      water and PDMS, the high water content silicone W/O emulsion using GES as a 
      surfactant is well stabilized. However, as the PDMS content increased this W/O 
      emulsion became less stable. In order to improve this stability, mixtures of GES 
      and polyoxyethylene-modified silicone (PS) were applied to the silicone emulsion 
      as co surfactant. By application of a PS with a methyl group at the end cap of 
      the polyoxyethylene chain (PSM), the emulsion became most stable at a GES/PSM 
      ratio of 1 : 2, and at the same time, the interfacial tension between the oil 
      phase and the water phase became minimal. The reason for this was studied by the 
      measurement of spin-lattice relaxation times (T(1)) of the alkyl chains of GES in 
      the GES/PS/water system by (13)C NMR. We assumed that the W/O silicone emulsions 
      were stabilized by the efficient orientation of the aggregates in the interface 
      between the silicone phase and the water phase by using PSM as a cosurfactant. 
      Copyright 2001 Academic Press.
FAU - Nagatani, Noboru
AU  - Nagatani N
AD  - Skin Care Research Laboratories, Kao Corporation, 2-1-3 Bunka, Sumidaku, Tokyo, 
      131-8501, Japan
FAU - Fukuda, Keiichi
AU  - Fukuda K
FAU - Suzuki, Toshiyuki
AU  - Suzuki T
LA  - eng
PT  - Journal Article
PL  - United States
TA  - J Colloid Interface Sci
JT  - Journal of colloid and interface science
JID - 0043125
EDAT- 2001/02/13 11:00
MHDA- 2001/02/13 11:00
CRDT- 2001/02/13 11:00
PHST- 2001/02/13 11:00 [pubmed]
PHST- 2001/02/13 11:00 [medline]
PHST- 2001/02/13 11:00 [entrez]
AID - S0021-9797(00)97309-0 [pii]
AID - 10.1006/jcis.2000.7309 [doi]
PST - ppublish
SO  - J Colloid Interface Sci. 2001 Feb 15;234(2):337-343. doi: 10.1006/jcis.2000.7309.