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Citation: KANG Hong-Liang, CHEN Cheng, ZHUANG Yu-Gang, DONG Li-Song. Structures and Thermal Properties of Poly(lactic acid)/Montmorillonite Nanocomposites[J]. Chinese Journal of Applied Chemistry, ;2005, 22(3): 346-348. shu

Structures and Thermal Properties of Poly(lactic acid)/Montmorillonite Nanocomposites

1.
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022

Corresponding author: DONG Li-Song,
Received Date: 10 May 2004
Available Online: 17 August 2004

Poly (lactic acid)/montmorillonite nanocomposites were prepared by the melt intercalation method.Their structures and thermal properties were investigated by WAXD,DSC and TGA techniques.The WAXD results show that the interlayer spacing of montmorillonite in the nanocomposites was increased after melt intercalation,indicating that the molecular chains of poly (lactic acid) had been intercalated into the montmo-rillonite layers.The thermal stability of poly (lactic acid) was obviously improved after intercalation with montmorillonite.Compared with that of pure poly (lactic acid),the thermal decomposition temperatures of the nanocomposites were increased by about 22.5℃ in air and 14℃ in N₂,respectively.
- poly(lactic acid),
- montmorillonite,
- nanocomposite,
- intercalation
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