LIQUID SEPARATION MEMBRANE OF SUBSTITUTED ACETYLENE POLYMER

摘要

PURPOSE:To obtain the title liq. separation membrane having a strong interaction with a material to be separated and made of a substituted acetylene polymer by using the polymer of 1-alkenyl-dimethylsilyl-1-propylene. CONSTITUTION:For example, a substituted acetylene monomer such as 1-[2-(3- cyclohexenyl)ethyldimethylsilyl]-1-propylene is dissolved in toluene, and polymerized in the soln. in the presence of a catalyst such as tantalum pentachloride and tetraphenyltin, and the obtained polymer is purified. The polymer is dissolved in a solvent such as toluene to prepare a casting soln., the soln. is cast over a glass sheet, the solvent is vaporized, and a film is formed. The obtained liq. separation membrane has excellent membrane preformance, exerts strong selectivity or stronger interaction on the component to be permeated of the material to be separated by its double bond on the side chain, and is effectively used for the separation of a liq. mixture of an water-soluble org. material such as ethanol and water.