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http://dx.doi.org/10.7317/pk.2013.37.2.249

Fabrication and Characterization of Environmentally Friendly PLA/PPC/PLA Multilayer Film  

Lee, Deuk-Young (School of Chem. Eng., Sungkyunkwan University)
Kim, Kyung-Youn (Advanced Technology R&D Center, SKC Co. Ltd.)
Cho, Misuk (School of Chem. Eng., Sungkyunkwan University)
Nam, Jaedo (Dept. of Polym. Eng. System, Sungkyunkwan University)
Lee, Youngkwan (School of Chem. Eng., Sungkyunkwan University)
Publication Information
Polymer(Korea) / v.37, no.2, 2013 , pp. 249-253 More about this Journal
Abstract
From poly(lactic acid) (PLA) and poly(propylene carbonate) (PPC) synthesized using $CO_2$, a PLA/PPC/PLA layered film is prepared by coextrusion and then stretched to uniaxial orientation. The mechanical, optical, and barrier properties and shrinkage of the prepared film were investigated in detail. The maximum shrinkage of PLA/PPC/PLA film reached to 60% at $75^{\circ}C$. With increasing PPC content, the ratio of shrinkage of the film was increased and its shrinkagerate was increased. The ratio of shrinkage of the film decreased with increasing stretching temperature. The prepared film has oxygen and vapor transmission barrier properties. In this study, the PLA/PPC/PLA film is expected to be commercialized as a environmentally friendly shrinkable film.
Keywords
poly(lactic acid); poly(propylene carbonate); coextrusion; shrinkable film; barrier property;
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