Highly Gas-Permeable Silanol-Functionalized Poly(diphenylacetylene)s: Synthesis, Characterization, and Gas Permeation Property
作者:Toshikazu Sakaguchi、Aiko Takeda、Tamotsu Hashimoto
DOI:10.1021/ma201280s
日期:2011.9.13
membranes in DMF lowered membrane densities, and consequently their gas permeability significantly increased. The oxygen permeability coefficients of silanol group-containing membranes (3a and 3b) were 210 and 1300 barrers, respectively. These silanol-functionalized poly(diphenylacetylene) membranes were found to exhibit very high gas permeability irrespective of the presence of the polar silanol groups
具有diisopropylphenoxysilyl组Diphenylacetylenes [PhOSi(我-Pr)2 C ^ 6 ħ 4 C≡CC 6 ħ 4 R等 R= H(1a),合成SiMe 3(1b)],然后与TaCl 5 / n- Bu 4 Sn聚合以提供相应的聚(二苯基乙炔)(2a和2b)。这些含甲硅烷氧基的聚合物通过从甲苯溶液中浇铸而成,提供了坚韧的自支撑膜。用n处理膜(2a和2b)-Bu 4 Ñ + ˚F - ,得到硅烷醇官能化的聚(二苯基乙炔)S(图3a和图3b)。硅烷醇官能化聚合物的FT-IR光谱表明,它们的一些硅烷醇基被消耗掉了,并且这些聚合物通过硅氧烷键交联了。2a和2b膜的透氧系数分别为12和26 barrers。这些膜在DMF中的脱保护作用降低了膜的密度,因此其透气性显着提高。含硅烷醇基的膜的透氧系数(3a和3b)分别是210个和1300个Barrers。发现这