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Polymers from vinyl fluoride
Author(s) -
Kalb G. H.,
Coffman D. D.,
Ford T. A.,
Johnston F. L.
Publication year - 1960
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1960.070041008
Subject(s) - polymer , fluoride , materials science , ultimate tensile strength , polymerization , polymer chemistry , composite material , polyvinyl acetate , vinyl polymer , dimethylformamide , vinyl acetate , chemistry , organic chemistry , copolymer , inorganic chemistry , solvent
The free‐radical polymerization of vinyl fluoride has been studied with the use of organic peroxide and azo initiators over the temperature range of 60–150°C. and at pressures of 75–1000 atm. Molecular weights of the polymers by osmotic pressure or radiotracer techniques were found to vary over the range of 45,000 to 180,000 depending on polymerization conditions employed. Stabilized high molecular weight polyvinyl fluoride may be compression‐molded into tough, high‐impact strength bars, or the unstabilized material may be cast into films from solvents such as dimethylformamide. The films, which may be cold drawn, are tough, brilliantly clear, and have tensile strengths near 8000 lb./in. 2 They are also extremely resistant to weathering, maintaining clarity and cold drawability even after ten years' exposure in Florida.