Study on Characteristics of Paper laminated with Biodegradable Plastics (3): Elemental and Morphological Analyses of Polylactide Deterioration

Ayaka Mayumi, Osamu Kanie, Takuya [et al] Kitaoka

Research output: Contribution to journalArticle

Abstract

Elemental and morphologocal analysis were applied to investigate the degradation behavior of commercial polylactide(PLA) film, poly (L-lactide)(PLLA) and poly (DL-lactide)(PDLLA) by X-ray photoelection spectroscopy (XPS) and atomic force microscopy (AFM), ewspectively. The PLA and PDLLA samples consisted og three types of carbon:C-C(C-H), C-O and O=C-O, which correspond to their theoretical composition. However, the XPS analysis revealed that the surfaces of the PLA filmhighly resistant to acid hydrolysis were overspread with unknown constitutions consisting of nitrogen and unoxidized carbon, not being announced offically. The AFM analysis offered a clear distinction in the surface deterioration of the PLA samples; and the alkaline treatment excavated numerous holes on the PLA surfaces. These results indicated that thecommercial plastics are chemically modified on their surfaces to improve the phisical propeties for practical use, resulting in being deprived of biodegradability and eco-compatibility. It was also suggested that the enlargement in the specific surface area, which may occur at the early stage on PLA degradation, possibly accelerated the PLA decomposition rate. A new conception in the material design for paper-based compositites was proposed; a local alkaline circumstance expected by alkaline fillers, e.g., CaO available in papermaking processes would effectively promote the PLA decomposition.
Original languageEnglish
Pages (from-to)97-106
Number of pages10
JournalJournal of the Faculty of Agriculture, Kyushu University
Volume48
Issue number1
Publication statusPublished - Oct 2003

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Biodegradable Plastics
biodegradability
plastics
deterioration
atomic force microscopy
degradation
spectroscopy
X-radiation
filling materials
papermaking
carbon
acid hydrolysis
films (materials)
surface area
Atomic Force Microscopy
sampling
Spectrum Analysis
poly(lactide)
Carbon
X-Rays

Cite this

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title = "Study on Characteristics of Paper laminated with Biodegradable Plastics (3): Elemental and Morphological Analyses of Polylactide Deterioration",
abstract = "Elemental and morphologocal analysis were applied to investigate the degradation behavior of commercial polylactide(PLA) film, poly (L-lactide)(PLLA) and poly (DL-lactide)(PDLLA) by X-ray photoelection spectroscopy (XPS) and atomic force microscopy (AFM), ewspectively. The PLA and PDLLA samples consisted og three types of carbon:C-C(C-H), C-O and O=C-O, which correspond to their theoretical composition. However, the XPS analysis revealed that the surfaces of the PLA filmhighly resistant to acid hydrolysis were overspread with unknown constitutions consisting of nitrogen and unoxidized carbon, not being announced offically. The AFM analysis offered a clear distinction in the surface deterioration of the PLA samples; and the alkaline treatment excavated numerous holes on the PLA surfaces. These results indicated that thecommercial plastics are chemically modified on their surfaces to improve the phisical propeties for practical use, resulting in being deprived of biodegradability and eco-compatibility. It was also suggested that the enlargement in the specific surface area, which may occur at the early stage on PLA degradation, possibly accelerated the PLA decomposition rate. A new conception in the material design for paper-based compositites was proposed; a local alkaline circumstance expected by alkaline fillers, e.g., CaO available in papermaking processes would effectively promote the PLA decomposition.",
author = "Ayaka Mayumi and Osamu Kanie and Kitaoka, {Takuya [et al]}",
year = "2003",
month = "10",
language = "English",
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pages = "97--106",
journal = "Journal of the Faculty of Agriculture, Kyushu University",
issn = "0023-6152",
publisher = "Faculty of Agriculture, Kyushu University",
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T1 - Study on Characteristics of Paper laminated with Biodegradable Plastics (3)

T2 - Elemental and Morphological Analyses of Polylactide Deterioration

AU - Mayumi, Ayaka

AU - Kanie, Osamu

AU - Kitaoka, Takuya [et al]

PY - 2003/10

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N2 - Elemental and morphologocal analysis were applied to investigate the degradation behavior of commercial polylactide(PLA) film, poly (L-lactide)(PLLA) and poly (DL-lactide)(PDLLA) by X-ray photoelection spectroscopy (XPS) and atomic force microscopy (AFM), ewspectively. The PLA and PDLLA samples consisted og three types of carbon:C-C(C-H), C-O and O=C-O, which correspond to their theoretical composition. However, the XPS analysis revealed that the surfaces of the PLA filmhighly resistant to acid hydrolysis were overspread with unknown constitutions consisting of nitrogen and unoxidized carbon, not being announced offically. The AFM analysis offered a clear distinction in the surface deterioration of the PLA samples; and the alkaline treatment excavated numerous holes on the PLA surfaces. These results indicated that thecommercial plastics are chemically modified on their surfaces to improve the phisical propeties for practical use, resulting in being deprived of biodegradability and eco-compatibility. It was also suggested that the enlargement in the specific surface area, which may occur at the early stage on PLA degradation, possibly accelerated the PLA decomposition rate. A new conception in the material design for paper-based compositites was proposed; a local alkaline circumstance expected by alkaline fillers, e.g., CaO available in papermaking processes would effectively promote the PLA decomposition.

AB - Elemental and morphologocal analysis were applied to investigate the degradation behavior of commercial polylactide(PLA) film, poly (L-lactide)(PLLA) and poly (DL-lactide)(PDLLA) by X-ray photoelection spectroscopy (XPS) and atomic force microscopy (AFM), ewspectively. The PLA and PDLLA samples consisted og three types of carbon:C-C(C-H), C-O and O=C-O, which correspond to their theoretical composition. However, the XPS analysis revealed that the surfaces of the PLA filmhighly resistant to acid hydrolysis were overspread with unknown constitutions consisting of nitrogen and unoxidized carbon, not being announced offically. The AFM analysis offered a clear distinction in the surface deterioration of the PLA samples; and the alkaline treatment excavated numerous holes on the PLA surfaces. These results indicated that thecommercial plastics are chemically modified on their surfaces to improve the phisical propeties for practical use, resulting in being deprived of biodegradability and eco-compatibility. It was also suggested that the enlargement in the specific surface area, which may occur at the early stage on PLA degradation, possibly accelerated the PLA decomposition rate. A new conception in the material design for paper-based compositites was proposed; a local alkaline circumstance expected by alkaline fillers, e.g., CaO available in papermaking processes would effectively promote the PLA decomposition.

M3 - Article

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JO - Journal of the Faculty of Agriculture, Kyushu University

JF - Journal of the Faculty of Agriculture, Kyushu University

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