Effects of thin carbon films on the selective gas permeability of a polymer membrane

Alimova, L. Ya.; Dzhamaletdinova, I. E.; Ovchinnikov, V. S.; Radzhabov, T. D.; Serebryakov, V. N.

doi:10.1007/bf00878263

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“…Poly(trimethylvinylsilane) (PTMVS) and poly(phenyldimethylvinylsilane) (PPDMVS), their copolymers, and their polymer blends have been demonstrated to possess excellent transparency, flexibility, permeability, and heat resistance and have been widely applied and studied as materials for gas-separation membranes, [1][2][3] optical fibers, 4 contact lenses, 5,6 coating of waterproofing fabrics, 7 optical disks, 8 photoresists, 9 etc. PTMVS and PPDMVS might also be useful as intermediates in the synthesis of monodisperse polyethylene, poly(vinyl alcohol), poly(vinyl ether), polyacetylene, poly(vinyl halide), poly(nitroethylene), and poly(vinylamine) (Scheme 1).…”

Section: Introductionmentioning

confidence: 99%

Anionic Synthesis of Narrow Molecular Weight Distribution Poly(trimethylvinylsilane) (PTMVS), Polystyrene−PTMVS Block Copolymers, and Poly(phenyldimethylvinylsilane). Conversion of Poly(phenyldimethylvinylsilane) into Poly(fluorodimethylvinylsilane)

et al. 1996

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The anionic polymerizations of trimethylvinylsilane (TMVS) initiated by t-BuLi in toluene at −20 °C and of phenyldimethylvinylsilane (PDMVS) at 0−20 °C proceed in high yields (>95%), giving narrow molecular weight distribution (MWD ≤ 1.15) polymers. Polystyrene−PTMVS AB block copolymers having relatively narrow molecular weight distributions were synthesized by initiation of TMVS by poly(styryllithium). The reaction of poly(phenyldimethylvinylsilane) (PPDMVS) with HBF4·Et2O in toluene at 60 °C resulted in the formation of poly(fluorodimethylvinylsilane) (PFDMVS) as shown by 1H and 19F NMR.

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Section: Introductionmentioning

confidence: 99%