Mechanical and thermal properties of perfluoroalkyl ethyl methacrylate–methyl methacrylate statistical copolymers synthesized in supercritical carbon dioxide

The lifetime of floating liquid marbles: the influence of particle size and effective surface tension

“…P-Zonyl-TAN was polymerized in scCO 2 at 250 bar and 65 C similar to our recently published reports 48,49 as schematically shown in Fig. 1 and a white amorphous polymer was obtained having long pendant chains containing -CF 2 and -CF 3 groups.…”

“…In this study, we prepared liquid marbles made of poly-(peruoroalkyl ethyl acrylate) (P-Zonyl-TAN), which was synthesized in supercritical CO 2 by homogenous radical polymerization, 48,49 having very low surface free energy in order to determine the effect of variation of the powder particle size on g eff and lifetimes of liquid marbles on the water subphase. Three different sizes of P-Zonyl-TAN powders (8, 20 and 60 mm of average particle size) were used and it was found that when the smallest particles ($8 mm) were used in the liquid marble formation, the lifetime of the liquid marble on the water surface was the longest and the deformation of the liquid marble started aer 170 min, however, when large ($60 mm) particles were used, liquid marbles were completely collapsed around 1 minute.…”

Kinetic Study of the Free Radical Copolymerization of Methyl Methacrylate with 2-Perfluorooctyl Ethyl Methacrylate by Quantum Computational Approach

“…However, adaptation of homopolymers of FMA to many systems is limited due to the many drawbacks such as being expensive, having poor mechanical properties and solubility difficulties in organic solvents (3,13,18). Copolymerization of FMA with methyl methacrylate (MMA) is an efficient solution to overcome these problems, and FMA-MMA copolymer couples have been experimentally synthesized by free radical polymerization using thermal initiators many times in the literature under different reaction conditions (15,(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28). Organic solvents such as butyl acetate (19,20,23), methyl ethyl ketone (MEK) (7,21), cyclohexanone (24), toluene (29,30) and solvent mixtures such as 1,1,2-trichlorotrifluoroethane (R-113)/-trifluorotoluene (TFT) (15,18), toluene/MEK (25) were previously used in solution copolymerizations to synthesize fluorinated acrylate copolymers.…”

“…Organic solvents such as butyl acetate (19,20,23), methyl ethyl ketone (MEK) (7,21), cyclohexanone (24), toluene (29,30) and solvent mixtures such as 1,1,2-trichlorotrifluoroethane (R-113)/-trifluorotoluene (TFT) (15,18), toluene/MEK (25) were previously used in solution copolymerizations to synthesize fluorinated acrylate copolymers. Apart from conventional organic solvents, supercritical CO2 has been used in many studies as an alternative medium for the free radical polymerization of fluoro monomers (26)(27)(28). Although these studies were successful in understanding the reaction conditions to obtain such polymers, and to find out the bulk and surface properties of the synthesized polymer, additional studies are needed for a detailed kinetic examination.…”

Superhydrophobic and oleophobic surfaces obtained by graft copolymerization of perfluoroalkyl ethyl acrylate onto SBR rubber

“…However, there are some disadvantages of the use of perfluoro-homopolymers: Most of them are very expensive, insoluble in common organic solvents and have weak mechanical properties. This problem can be partially solved by copolymerization of the expensive perfluoro-monomers with low cost monomers such as acrylates, methacrylates to decrease the cost and also to improve their weak mechanical properties [45][46][47][48].…”