Fluoroacrylate polymers

In the early 1950s the fluoroacrylate polymers Poly-lF4 and Poly-2F4 (known initially as PolyFBA) and PolyFMFPA) were introduced. These materials had the structures given in Figure 13.7. These materials are also no longer of eommercial significance. 

The fluoroacrylic polymers are high-modulus, low-elongation plastics, which are brittle in the sense that all thermosetting polymers are brittle. However, they are tough, rugged materials not easily damaged by impact or mechanical abuse. 

The low surface energy of fluoroacrylate polymers makes them suitable for use as water- and oil-repellent coatings for fibers and textiles [21]. At present, the largest... 

Traditionally, a fluoropol5mier or fluoroplastic is defined as a polymer consisting of carbon (C) and fluorine (F). Sometimes these are referred to as per-fluoropolymers to distinguish them from partially flu-orinated pol miers, fluoroelastomers, and other polymers that contain fluorine in their chemical structure. For example, fluorosilicone and fluoroacrylate polymers are not referred to as fluoropolymers. An example of a linear fluoropol5mier is tetrafluoroeth-ylene pol5mier (PTFE) ... 

Fluorous-phase soluble hydrogenation catalysts are obtained by conversion of N-acryloxysuccinimide-containing fluoroacrylate polymers into phosphine ligands and hence Wilkinson catalyst analogues." ... 

Kani, I. Omaty, M. A. Rawashdeh-Omaiy, M. A. Lopez-Castillo, Z. K. Flores, R Akgerman, A. Fackler, Jr., J. P. Homogeneous catalysis in supercritical carbon dioxide with rhodium catalysts tethering fluoroacrylate polymer ligands. Tetrahedron, 2002,58,3923-3928. 

This new type of soluble polymeric ligand derived from fluoroacrylate polymers... 

Pig. 2. Typical absorption curve with data points (d) the fluoroacrylic polymer tested. 

Miscibility of polymers in carbon dioxide. Only a few type of polymers of reasonable high molecular weight have been shown to display complete miscibility at reasonable concentrations. These are mostly the siloxane and fluoroacrylate polymers, and copolymers that contain these moities, the two best known examples being poly(dimethylsiloxane) [PDMS] [28, 29] and poly(l,l dihydroperfluorooctylacrylate) [Poly (FAO)] [4, 30]. 

Toyoka, Y Matsumoto, K. Koizumi, H. Kaneda, M. Okano, K. (Mitsubishi Rayon Co., Ltd., Japan). Fluoroacrylic Polymer having Lubricating Effect and Thermoplastic Resin Composition. Eur. Pat. Appl., EP 449274, A1 19911002, 1991. 

Fluoropolymers are defined as polymers consisting of only carbon and fluorine in the polymer backbone. For this reason, fluorosilicones and fluoroacrylate polymers are quite often not referred to as fluoropolymers. 

Figure 8.20 demonstrates static contact angle measurements of various liquids on the saturated surfaces functionalized with the fluoroacrylic polymer under 60 kPa jet impact. Two different tilt angles (40° and 80°) were used and the results were compared with the orthogonal impact case... 

Figure 8.20 Static contact angles of various liquids on fluoroacrylic polymer functionalized surfaces that had saturated (superhydrophobicity loss due to internal pore wetting) as a result of water jet impact at 60 kPa.

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