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Thermal Stability of PDLLA/MMT Nanocomposites

Jun Yao

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Abstract

Poly(DL-lactic acid)/montmorillonite (PDLLA/MMT) nanocomposites were prepared by heating and blending. The effect of the montmorillonite contents on the structure and thermal stability of nanocomposites was investigated. Results showed that the PDLLA chains had been intercalated into the montmorillonite layers. With the thermal stability improving, the Tg of the nanocomposites was increased. The thermal decomposition of the nanocomposites at least higher 22.5℃ than that of pure PDLLA. When the content of montmorillonite reaches 5%, the breaking elongation of the nanocomposites will be doubled.

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What this paper is about

Poly(DL-lactic acid)/montmorillonite (PDLLA/MMT) nanocomposites were prepared by heating and blending. The effect of the montmorillonite contents on the structure and thermal stability of nanocomposites was investigated. Results showed that the PDLLA chains had been intercalated into the montmorillonite layers. With the thermal stability improving, the Tg of the nanocomposites was increased. The thermal decomposition of the nanocomposites at least higher 22.5℃ than that of pure PDLLA. When the content of montmorillonite reaches 5%, the breaking elongation of the nanocomposites will be doubled.

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Available abstract

Poly(DL-lactic acid)/montmorillonite (PDLLA/MMT) nanocomposites were prepared by heating and blending. The effect of the montmorillonite contents on the structure and thermal stability of nanocomposites was investigated. Results showed that the PDLLA chains had been intercalated into the montmorillonite layers. With the thermal stability improving, the Tg of the nanocomposites was increased. The thermal decomposition of the nanocomposites at least higher 22.5℃ than that of pure PDLLA. When the content of montmorillonite reaches 5%, the breaking elongation of the nanocomposites will be doubled.

Key concepts: Montmorillonite, Nanocomposite, Thermal stability, Materials science, Elongation, Thermal decomposition, Chemical engineering, Composite material

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