Analysis of permeability; solubility and diffusivity of carbon dioxide; oxygen; and nitrogen in crystalline and liquid crystalline polymers

Abstract

In general, permeability and diffusivity in crystalline and liquid crystalline polymers are thought to decrease with increasing crystallinity. However, according to our statistical literature data analysis with 300 of crystalline and liquid crystalline polymers, permeability and diffusivity of carbon dioxide, oxygen, and nitrogen were not significantly affected by crystallinity at the lower crystallinity ranges. Some of them were observed with almost constant or slightly increased values of the permeability and diffusivity at the lower crystallinity range. In contrast, finally, at a higher crystallinity, gas permeability and diffusivity decreased. No increase in the solubility is observed fo..