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New fluorinated polysiloxanes containing an ester function in the spacer—II. Surface tension studies
Author(s) -
Beyou Emmanuel,
Bennetau Bernard,
Dunoguès Jacques,
Babin Pierre,
Teyssié Dominique,
Boileau Sylvie,
Corpart JeanMarc
Publication year - 1995
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.1995.210380304
Subject(s) - hydrosilylation , copolymer , contact angle , surface tension , polymer chemistry , polymer , alkane , materials science , chemistry , organic chemistry , composite material , hydrocarbon , catalysis , thermodynamics , physics
The surface tensions of fluorinated polysiloxanes prepared by hydrosilylation of unsaturated perfluoroalkyl esters derived from undecylenic acid [CH 2 CH(CH 2 ) 8 COOCH 2 CH 2 R F , with R F = C 6 F 13 , C 8 F 17 , and C 8 F 17 (CH 2 ) 10 COOCH 2 CH 2 CHCH 2 ] by methylhydrodimethylsiloxane copolymers of various SiH contents have been measured. The critical surface tensions, γ c , and the solid surface tensions, γ D s , 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.