Morphological and thermal properties of photodegradable biocomposite films

Sreejarani Kesavan Pillai; Suprakas Sinha Ray; Manfred Scriba; Vincent Ojijo; Mpitloane Joseph Hato

doi:10.1002/app.38763

Morphological and thermal properties of photodegradable biocomposite films

Sreejarani Kesavan Pillai, Suprakas Sinha Ray, Manfred Scriba, Vincent Ojijo, Mpitloane Joseph Hato

Chemical Sciences

Council for Scientific and Industrial Research

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

Biocomposites containing ultraviolet (UV) radiation absorbing inorganic nanofillers are of great interest in food packaging applications. The biodegradable polylactide (PLA) composite films were prepared by solvent casting method by incorporating 1 wt % of titanium dioxide (TiO₂) and Ag-TiO₂ (silver nanoparticles decorated TiO₂) nanoparticles to impart the photodegradable properties. The films were exposed to UV radiation for different time periods and morphology of the composite films before and after UV exposure were investigated. The results showed that homogenous filler distribution was achieved in the case of Ag-TiO₂ nanoparticles. The thermal properties and thermomechanical stability of the composite film containing Ag-TiO₂ nanoparticles were found to be much higher than those of neat PLA and PLA/TiO₂ composite films. The scanning electron microscopy and X-ray diffraction studies revealed that the photodegradability of PLA matrix was significantly improved in the presence of Ag-TiO₂ nanoparticles.

Original language	English
Pages (from-to)	362-370
Number of pages	9
Journal	Journal of Applied Polymer Science
Volume	129
Issue number	1
DOIs	https://doi.org/10.1002/app.38763
Publication status	Published - 5 Jul 2013

Keywords

Biopolymers and renewable polymers
composites
degradation
nanoparticles
nanowires and nanocrystals

ASJC Scopus subject areas

General Chemistry
Surfaces, Coatings and Films
Polymers and Plastics
Materials Chemistry

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Cite this

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abstract = "Biocomposites containing ultraviolet (UV) radiation absorbing inorganic nanofillers are of great interest in food packaging applications. The biodegradable polylactide (PLA) composite films were prepared by solvent casting method by incorporating 1 wt % of titanium dioxide (TiO2) and Ag-TiO2 (silver nanoparticles decorated TiO2) nanoparticles to impart the photodegradable properties. The films were exposed to UV radiation for different time periods and morphology of the composite films before and after UV exposure were investigated. The results showed that homogenous filler distribution was achieved in the case of Ag-TiO2 nanoparticles. The thermal properties and thermomechanical stability of the composite film containing Ag-TiO2 nanoparticles were found to be much higher than those of neat PLA and PLA/TiO2 composite films. The scanning electron microscopy and X-ray diffraction studies revealed that the photodegradability of PLA matrix was significantly improved in the presence of Ag-TiO2 nanoparticles.",

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AU - Pillai, Sreejarani Kesavan

AU - Ray, Suprakas Sinha

AU - Scriba, Manfred

AU - Ojijo, Vincent

AU - Hato, Mpitloane Joseph

PY - 2013/7/5

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N2 - Biocomposites containing ultraviolet (UV) radiation absorbing inorganic nanofillers are of great interest in food packaging applications. The biodegradable polylactide (PLA) composite films were prepared by solvent casting method by incorporating 1 wt % of titanium dioxide (TiO2) and Ag-TiO2 (silver nanoparticles decorated TiO2) nanoparticles to impart the photodegradable properties. The films were exposed to UV radiation for different time periods and morphology of the composite films before and after UV exposure were investigated. The results showed that homogenous filler distribution was achieved in the case of Ag-TiO2 nanoparticles. The thermal properties and thermomechanical stability of the composite film containing Ag-TiO2 nanoparticles were found to be much higher than those of neat PLA and PLA/TiO2 composite films. The scanning electron microscopy and X-ray diffraction studies revealed that the photodegradability of PLA matrix was significantly improved in the presence of Ag-TiO2 nanoparticles.

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KW - nanowires and nanocrystals

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Morphological and thermal properties of photodegradable biocomposite films

Abstract

Keywords

ASJC Scopus subject areas

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