螺旋聚苯乙炔膜的制备及其气体透过性能

Preparation and Gas Permeation of Helical Polyphenylacetylene Membrane

利用非手性((nbd)Rh^+[η~6-(C_6 H_5)B^-(C_6 H_5)_3])为催化剂,将3种手性苯乙炔单体与非手性苯乙炔单体按照不同的比例进行共聚,得到了高分子量的可溶苯乙炔共聚物。将得到共聚物利用溶剂挥发法进行制膜,然后采用圆二色光谱仪(CD)对共聚物的二级结构进行测试。结果表明:该膜对CO_2有优先透过性能,共聚物主链上形成单手性螺旋结构。

Three chiral polyphenylacetylene monomers and an achiral polyphenylacetylene monomer were copolymerized in different proportions using the achiral catalytic system （（nbd）Rh＋[η^6-（C6H5）B^-（C6H5）3]） to give soluble high molecular weight copolymer of phenylacetylenes. The obtained copolymers were made into membranes by solvent evaporation method, and circular dichroism（CD） was used to test the secondary structure of the copolymers. Results showed that the membrane had priority permeability on CO2. The copolymers formed one-handed helical structure in the main chains.