SOME FETURES OF STRUCTURE OF NANOORGANIZFNION OF FLUORINOCONTAINING COPOLYMERS

Abstract

Difracton patterns of fluorinocontaining copolymers (FC) dual ones GFR-26 and GFR-32 as well as ternary ones Vaiton GFLT 600 S (В-600) and Vaiton GFLT 200 S (В-200) фирмы Du Pont Dow Elastomers were obtained. Structures of samples both initial and after heating under temperatures Т 90, 140, and 180 °С in mould and in free state are studied. Dynamic viscosity was measured by RPA 3000 (Alpha Technologies) under temperatures 40–180 °С, frequency 0,3–25 Hz and angle 0,5°. Similarity and difference of difracton patterns in connection with chemical structure of FC are considered based on early authors ideas about nanoorgsnisazation (N) of polymers. Some idea of the role of vinylidene fluoride (VF) and hexafluoropropylene (HF) units in N of GFR-26 as well as some changes in N of GFR-32, connected with the replacing of VF and HF on trifluorochlorethylen units, containing Cl atoms is under discussion. Additional reflexes on difracton patterns of ternary copolymers are connected by authors with the presents of tetrafluoroethylene (TE) and perfluoromethylvinyl ether units. В-200 show the more perfect N because of the microblocks of TE forming N of small intermolecular distances (2,1–3,5 Å) of minimal barrier under heating.