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http://dx.doi.org/10.7317/pk.2013.37.5.579

Thermal Property, Morphology, Optical Transparency, and Gas Permeability of PVA/SPT Nanocomposite Films and Equi-biaxial Stretching Films  

Ham, Miran (School of Energy and Integrated Materials Engineering, Kumoh National Institute of Technology)
Kim, Jeong-Cheol (Energy and Applied Optics Team, Korea Institute of Industrial Technology)
Chang, Jin-Hae (School of Energy and Integrated Materials Engineering, Kumoh National Institute of Technology)
Publication Information
Polymer(Korea) / v.37, no.5, 2013 , pp. 579-586 More about this Journal
Abstract
Poly(vinyl alcohol)(PVA) nanocomposite films containing various saponite (SPT) clay contents were synthesized using a solution intercalation method. The thermal property, morphology, optical transparency, and gas permeability of the PVA nanocomposite films with various SPT contents in the range of 0 to 10 wt% were examined. PVA nanocomposite film containing 5 wt% SPT showed excellent thermal and gas barrier property. The hybrid films containing 5 wt% SPT were equibiaxially stretched with stretching ratios ranging from 150 to 250%. The clay dispersion, optical transparency, and gas permeability were also examined as a function of equibiaxial stretching ratio. The PVA nanocomposite films with various equibiaxial stretching ratios showed excellent optical transparency and barrier to oxygen permeability.
Keywords
poly(vinyl alcohol); saponite; nanocomposite films; equibiaxial stretching;
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