Shin, JW Kim, HJ Jo, WH Hong, JM Jung, B Kang, YS 2024-01-21T20:32:41Z 2024-01-21T20:32:41Z 2021-09-02 1995-10-31 1225-5947 https://pubs.kist.re.kr/handle/201004/144947 The permeation properties of oxygen and nitrogen in polyarylate (PAR)/poly(butylene terephthalate) (PET) blend membranes were investigated and analyzed by using a modified two-phase model. PAR and PET are amorphous and semi-crystalline polymers, respectively, and the amorphous phases of these polymers form a miscible blend. When blended, these two polymers show a volume contraction. The effect of crystallinity on gas permeation and separation properties was also examined. The crystallinity was controlled by annealing and/or by varying its PET content. The resulting gas permeation characteristics were analyzed by using the modified two-phase model, derived from the semi-logarithmic additive rule. The experimental permeability in the amorphous phase of the blend showed a marginally negative deviation from the model. The deviation may be attributable to the volume change during blending. English POLYMER SOC KOREA POLY(BUTYLENE TEREPHTHALATE) POLYMER BLENDS POLYARYLATE COPOLYMER PERMEABILITY TRANSPORT Gas permeation characteristics in polyarylate/poly(butylene terephthalate) blend membranes Article 1 KOREA POLYMER JOURNAL, v.3, no.2, pp.65 - 70 KOREA POLYMER JOURNAL 3 2 65 70 scie A1995UV84900002 Polymer Science Polymer Science Article POLY(BUTYLENE TEREPHTHALATE) POLYMER BLENDS POLYARYLATE COPOLYMER PERMEABILITY TRANSPORT permeation gas transtport