Biodegradability of poly(3-hydroxybutyrate) film grafted with vinyl acetate; Effect of grafting and saponification

Wada, Yuki; Seko, Noriaki; Nagasawa, Naotsugu; Tamada, Masao; Kasuya, Kenichi*; Mitomo, Hiroshi*

Radiation-induced graft polymerization of vinyl acetate (VAc) onto poly(3-hydroxybutyrate) (PHB) film was carried out. At a degree of grafting higher than 5%, the grafted films (PHB-g-VAc) completely lost the enzymatic degradability that is characteristic of PHB due to the grafted VAc covering the surface of the PHB film. However, the biodegradability of the PHB-g-VAc films was recovered when the films were saponified in alkali solution under optimum conditions. Graft chains of the PHB-g-VAc film reacted selectively to become biodegradable polyvinyl alcohol (PVA). The biodegradability of the saponified PHB-g-VAc film increased rapidly with time.

Language	:	English
Journal	:	Radiation Physics and Chemistry
Volume	:	76
Number	:	6
Pages	:	p.1075 - 1083
Publication Year/Month	:	2007/06
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Paper URL	:	https://doi.org/10.1016/j.radphyschem.2006.11.008
DOI for research data	:	Link to research data related to this paper/report.
Keywords	:	no keyword
Research Facility	:	電子加速器
Press Release	:
Article of JAEA R&D Review	:	Promising Biodegradable Plastic for Industrial Applications; OFF-ON Control of Biodegradability in Polymer with Radiation and Chemical Modifications[/]
Cooperating Institute	:	群馬大学

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Registration No. : AA20060669
JAEA Abstracts No. : 36000084
Paper Submission No. : 3410

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