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研究了几种新型含有机硅二元和三元多嵌段共聚物的氧、氮选择透过性能。其中双酚A聚羟基醚-聚二甲基硅氧烷二元多嵌段共聚物-(PHE-PDMS)_n的透氧系数Po_2=510Barrer、氧氮分离系数a o_2/N_2=2.2,聚苯醚-聚二甲基硅氧烷-聚对羟基苯乙烯三元多嵌段共聚物-(PPO-PDMS-pHS)_n的Po_2=156 Barrer、do_2/N_2=2.4,两者都具有良好的力学性能。此外,含有机硅三元多嵌段共聚物与聚三甲硅基丙炔(PTMSP)起薄复合后,改善了PTMSP超薄膜的透气稳定性。其JO_2≈1.0×10~(-3)cm~2/cm~2·s·cmHg,do_2/N_2≥2.0。
The selective and selective properties of oxygen and nitrogen for several novel silicone binary and ternary multiblock copolymers were studied. Among them, the permeability coefficient of bisphenol A polyhydroxy ether-polydimethylsiloxane binary multiblock copolymer- (PHE-PDMS) _n was Po_2 = 510Barrer, oxygen and nitrogen separation coefficient a o_2 / N_2 = 2.2, Po_2 = 156 Barrer, do 2 / N 2 = 2.4 for the ether-polydimethylsiloxane-poly (p-hydroxystyrene) ternary multiblock copolymer- (PPO-PDMS-pHS) _n, both of which have good mechanics performance. In addition, the thin composite of silicone ternary multiblock copolymer with polytrimethylsilyl propyne (PTMSP) improves the breathability of PTMSP ultrathin films. The JO 2 ≈1.0 × 10 ~ (-3) cm ~ 2 / cm ~ 2 · s · cmHg, do_2 / N_2≥2.0.