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Water and oxygen permeation through transparent ethylene vinyl alcohol/(graphene oxide) membranes

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2014, 15(1), pp.50-56
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General

김혜민 1 HEON SANG LEE 2

1Sangbo Co., LTD.,
2동아대학교

Accredited

ABSTRACT

We prepared ethylene vinyl alcohol (EVOH)/graphene oxide (GO) membranes by solution casting method. X-ray diffraction analysis showed that GOs were fully exfoliated in the EVOH/GO membrane. The glass transition temperatures of EVOH were increased by adding GOs into EVOH. The melting temperatures of EVOH/GO composites were decreased by adding GOs into EVOH, indicating that GOs may inhibit the crystallization of EVOH during non-isothermal crystallization. However, the equilibrium melting temperatures of EVOH were not changed by adding GOs into EVOH. The oxygen permeability of the EVOH/GO (0.3 wt%) film was reduced to 63% of that of pure EVOH film, with 84% light transmittance at 550 nm. The EVOH/GO membranes exhibited 100 times better (water vapor)/(oxygen) selectivity performance than pure EVOH membrane.

Citation status

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Total Citation Counts(KCI+WOS) (16) This is the number of times that the duplicate count has been removed by comparing the citation list of WoS and KCI.

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