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Thermal properties in strong hydrogen bonding systems composed of poly(vinyl alcohol), polyethyleneimine, and graphene oxide

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2014, 15(4), pp.282-289
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General

최수아 1 황덕군 2 HEON SANG LEE 1

1동아대학교
2중소기업진흥공단

Accredited

ABSTRACT

Blends of poly(vinyl alcohol) (PVA), polyethyleneimine (PEI), and graphene oxide (GO) were prepared by solution casting method. Calorimetric thermal properties of the blends were investigated. The Tgs of PVA/PEI blends were higher than the Tgs of either of the component polymers at low concentrations of PEI. These abnormal increases of Tgs may be due to the negative entropy of mixing which is associated with strong hydrogen bonding between PVA and PEI. The degree of depression of s was not reduced by the negative entropy of mixing, since strong hydrogen bonding also causes an increase in the magnitude of negative c between PVA and PEI. The Tg of PVA was increased significantly by adding 0.7 wt.% GO into PVA. The magnitude of negative c was increased by adding GO into the blends of PVA and PEI.

Citation status

This is the result of checking the information with the same ISSN, publication year, volume, and start page between the WoS and the KCI journals. (as of 2023-01-03)

Total Citation Counts(KCI+WOS) (17) 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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