Silicon-modified carbohydrate surfactants VI: Synthesis of carbosilane, silane, polysilane and non-permethylated siloxane derivatives; the wetting behaviour of epoxy-modified precursor liquids on non-polar surfaces

✍ Scribed by R. Wagner; L. Richter; Y. Wu; B. Weiland; J. Weissmüller; J. Reiners; E. Hengge; A. Kleewein

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 237 KB
• Volume: 12
• Category: Article
• ISSN: 0268-2605
• DOI: 10.1002/(sici)1099-0739(199801)12:1<47::aid-aoc670>3.0.co;2-a

✦ Synopsis

The synthesis of carbohydrate surfactants bearing carbosilane, silane, polysilane and non-permethylated siloxane moieties is described. These surfactants consist of three structural elements: (1) a silicon-containing moiety, ( ) a spacer and (3) a carbohydrate unit. Additionally two different types of mixed structures have been synthesized: (a) singlechained carbosilane-siloxane surfactants and (b) double-chained combinations of carbosilanes, silanes and siloxanes. The wetting behaviour of the key intermediates, the allyl glycidyl derivatives, has been investigated by static surface tension (␥ lv , ) and wetting tension (␥ sv Ϫ ␥ sl , ␣) measurements on a nonpolar perfluorinated surface (FEP ® plate). The contact angles obtained for these pure liquids are not a linear function of the surface tension but depend on the polarity of the substructures.