Polystyrene–Polyperfluorooctylethyl acrylate Diblock Copolymers: The Effect of Dilution of the Fluorinated Mesogenic Chains on Bulk and Surface Properties

Abstract

Three smectic poly(styrene-b-perfluorooctylethyl acrylate) block copolymers\ud (S-b-AF8) with different degrees of polymerization (n, m) of the relative blocks\ud were synthesized by atom transfer radical polymerization (S, n=25; AF8 m=2, 6, 23).\ud The mesophase structure and transition temperatures were investigated by DSC and\ud WAXD. The block copolymer having the shortest fluorinated block was blended with a\ud thermoplastic elastomer SEBS in different proportions, in order to look at the effect of\ud a further dilution of the perfluorinated groups on non-wetting properties. Thin films\ud of the block copolymers as well as the blends exhibited large contact angles with\ud both water and n-hexadecane, which resulted in low solid surface tensions. XPS\ud findings at different photoemission angles confirmed the effective surface segregation\ud of the mesogenic chains of the fluorinated polymer bloc

Association of immunoglobulin‐like transcript 6 deficiency with Sjögren's syndrome

“…New properties are expected if these two polymers are combined together. However, the fluorinated polymers and PS are incompatible with each other, and phase separation and nanostructure are observed 1, 7, 8. The association between these two polymers opens the way to various industrial applications.…”

Synthesis of partially fluorinated polyolefins via copolymerization of ethylene with fluorinated norbornene-based comonomers

“…The incorporation of fluorinated comonomers can efficiently modulate the surface properties of polymers. 22,44 Here, the surface properties were studied by measuring the water contact angles (WCAs) and oil contact angles (OCAs) of polymer surfaces (Table 2 and Fig. S2 †).…”