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《Journal of Functional Polymers》 1996-01
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Study on Segmented Copolymers Containing PDMS Ⅳ Oxygen Permeabilities of Membranes of Segmented Copolymers Comtaining PDMS

Shi Linqi Zheng Guodong Feng Zhiliu(Changchun Instiute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022)  
Oxygen and nitrogen permeabilities of a series segmented binary and ternary copo-lymers containing PDMS were investingated. The compatibility between hard and soft segments have a great influence upon gas permeabilities. Among the segmented copo-lymers studied, -(PHE-PDMS)n- and -(PPO-PDMS-PHS)n- which have good compatibility are excellent in oxygen enrichment. The oxygen permeability coefficient(Po2), the separation factor( a O2/Na) of the -(PHE-PDMS)n- are 510Barrer, 2.2 and 156 Barrer, 2,4, respectively. Both of them also, exhibit attractive mechanical properties. The thin film composite membrane was constructed by -(PSF-PDMS-PFS)n-/PTMSP/PSF show the better stability of gas permeation than that of the PTMSP/PSF, and its oxygen permeation speed (Jo2)≈1.0×10-3cm3/cm2 · s · cmHg and a oa/N2≥2.0.
【Fund】: 国家自然科学基金资助项目
【CateGory Index】: O631
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