Authors Appelhans, D. ; Wang, Z. ; Zschoche, St. ; Zhuang, R.-C. ; Häußler, L. ; Friedel, P. ; Simon, F. ; Jehnichen, D. ; Grundke, K. ; Eichhorn, K.-J. ; Komber, H. ; Voit, B.
Title Bulk and Surface Properties of Maleimide Copolymers: Effect of Fluorinated Side Chains
Date 31.03.2005
Number 12450
Abstract We studied the bulk and surface properties of maleimide (MI) copolymers based on threedifferent main chains, poly(ethene-<I>alt</I>-maleimide), poly(styrene-<I>alt</I>-maleimide), and poly(octadecene-<I>alt</I>-maleimide), with two different types of side chains (4-(<I>N</I>-perfluoroheptylcarbonyl)aminobutyl and<I>n</I>-dodecyl). By the given alternating substitution pattern of the side chains in MI copolymers, differentside chain organizations caused different surface energetics. On the basis of determined advancing contactangles of water on spin-coated MI copolymer films, solid surface tensions <I><IMG SRC="/images/gifchars/gamma.gif" BORDER=0 ></I><SUB>sv</SUB> were calculated in the rangeof 19-23 mJ/m<SUP>2</SUP> for alkyl side chains and of 11-18 mJ/m<SUP>2</SUP> for fluorinated side chains. In both cases,within the aliphatic and fluorinated series, the main chain poly(styrene-<I>alt</I>-maleimide) suppressed a betteralignment of side chains resulting in nondensely packed CH<SUB>3</SUB> and CF<SUB>3</SUB> surface groups, respectively, andhigher solid surface tensions. For this study small- and wide-angle X-ray diffraction, differential scanningcalorimetry, attenuated total reflection infrared spectroscopy, ellipsometry, atomic force microscopy, contactangle measurements, angle-resolved X-ray photoelectron spectroscopy, and molecular modeling calculationwere used to investigate the bulk and surface properties.
Publisher Macromolecules
Citation Macromolecules 38 (2005) 1655-1664
Tags contact-angle interpretation drop shape-analysis c-13 nmr-spectra anhydride copolymer corresponding acid styrene copolymers liquid-crystalline sodium-salt polymers films

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