Gas Permeability of Poly (organophosphazenes) |
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| Authors: | Meisetsu Kajiwara |
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| Institution: | Department of Applied Chemistry, Faculty of Engineering , Nagoya University , Nagoya , 464 , Japan |
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| Abstract: | Abstract The gas permeability and an oxygen to nitrogen selectivity was determined with some poly (organophosphazenes). It is found from the data that the membrance having the highest gas permeability was NP(NHPrn) (NHEt)]n, and had 1.5x10?6 cm3. cm/cm3 sec.cmHg to oxgen or 2.2x10?6cm3.cm/cm3.sec.cm.Hg to nitrogen. On the other hand, the membrance having the highest oxgen to nitrogen selectivity of about 3, had the formular of NP(OC6H4Cl-p)2]n. Also, the selectivity does not depend on the glass transition temperature of the membrances. The membrance prepared from NP(OC6H4CH3-p)2]n has a negative activation energy to oxgen and nitrogen permeability. |
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