ISSN:
1572-8943
Keywords:
amphiphile oligomers
;
DSC
;
thermo-reversible gelation
;
water states
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Symmetrical block oligomers having in common terminal groups (A) consisting of polyoxyethylene (20) stearyl ether are materials of pharmaceutical and cosmetic interest. Phase properties of their aqueous systems and amounts of water typologies were determined by differential scanning calorimetry (DSC). The overall amount of water absorbed by each investigated oligomer was not significantly influenced by the type of central bridging block, whereas the amount of free water decreased with increasing oligomer concentration in the gel. A number of 60–70 moles of water was found to solvate the oligomer chain. The oligomers studied presented a thermo-reversible gelation with and precipitation under determined temperature conditions.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1010133904733
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