ISSN:
0959-8103
Keywords:
fluorinated polysiloxanes
;
copolymers
;
self-assembled monolayers
;
surface tension
;
contact angles
;
liquid crystalline polymers
;
transition temperatures
;
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
The surface tensions of fluorinated polysiloxanes prepared by hydrosilylation of unsaturated perfluoroalkyl esters derived from undecylenic acid [CH2=CH—(CH2)8—COO—CH2—CH2—RF, with RF = C6F13, C8F17, and C8F17—(CH2)10COO—CH2—CH2—CH=CH2] by methylhydrodimethylsiloxane copolymers of various Si—H contents have been measured. The critical surface tensions, γc, and the solid surface tensions, γDs, were deduced from n-alkane and water contact angle data. They decrease as the perfluoroalkyl graft content of the copolymers increases. Some of them, which are in the range of the lowest surface tension fluoro polymers known, are observed when the fluorinated segments are self-organized at the interface, i.e. when the polymers are mesomorphous or crystalline at room temperature.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pi.1995.210380304
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