Synthesis, Characterization, and Membrane Properties of Poly(1-trimethylgermyl-1-propyne) and Its Nanocomposite with TiO2

摘要: The relationship between poly(1-trimethylgermyl-1-propyne) (PTMGP) microstructure and gas permeability property is reported. Controlling the synthesis conditions via TaCl5 NbCl5 catalyst systems, tailor-made polyacetylenes in a wide range of cis/trans ratio (trans content from 35 to ∼100%) were obtained. According cis trans polymeric chain, two-phase structure was found characterized by presence regions with enhanced level macrochains ordering amorphous regions. polymer has been related free-volume, permeability, resistance toward liquid hydrocarbons. PTMGP membranes high (80−90%) exhibited higher than samples low content. Gas decreased density films, i.e., free-volume fraction polymers different microstructures. Furthermore, it demonstrated that solvents the...