Grafted carbon fibers and their physico-chemical properties. Part II. Grafting of liquid crystalline methacrylic monomers onto carbon fibers and the influence of an applied voltage to the carbon fiber embedded in a liquid crystalline matrix

✍ Scribed by A. Bismarck; M. Pfaffernoschke; B. Song; J. Springer

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 365 KB
• Volume: 71
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/(sici)1097-4628(19990314)71:11<1893::aid-app20>3.0.co;2-z

✦ Synopsis

Results of grafting reactions of a liquid crystalline (lc) monomer onto carbon fiber surfaces are presented and compared with results of noncovalently bonded lc polymer, which is proved reproducible by scanning electron microscopy. Electrooptical investigations under a polarizing microscope hints of the possibility of changing lc polymer and lc low molecular mass matrix molecules properties by applying a certain voltage to the carbon fibers. Wetting and electrokinetic measurements were performed and correlated with grafting reaction parameters. Those investigations revealed a nearly complete coverage of the carbon fiber surfaces by lc polymers. These measurements are suitable to characterize carbon fibers modified by grafted or coated polymers.