Biodegradable polymeric films based on microbial poly(3-hydroxybutyrate). Effect of gamma-radiation on mechanical properties and biodegradability

Two samples of microbial poly(3‐hydroxybutyrate) (PHB) having different molecular weight were used for the preparation of films to be exposed to gamma radiation. The effect of radiation on those samples with high molecular weight increased the fragility of the film. Biodegradability increased with t...

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Bibliographic Details
Published in:	Macromolecular symposia. Vol. 197; no. 1; pp. 57 - 64
Main Authors:	Miyazaki, S.S., Yep, A.R., Kolton, F., Hermida, É.B., Povolo, F., Fernandes, E.G., Chiellini, E.
Format:	Journal Article
Language:	English
Published:	Weinheim WILEY-VCH Verlag 01-07-2003 WILEY‐VCH Verlag
Subjects:	biodegradation bioplastic mechanical properties poly(3-hydroxybutyrate) γ-irradiation
Online Access:	Get full text
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Summary:	Two samples of microbial poly(3‐hydroxybutyrate) (PHB) having different molecular weight were used for the preparation of films to be exposed to gamma radiation. The effect of radiation on those samples with high molecular weight increased the fragility of the film. Biodegradability increased with time and reached about 95% after 18 days. Weight‐loss of both samples (irradiated and non‐irradiated) after 23 days were 100%, for those films with molecular weight of 265 kD.
Bibliography:	ark:/67375/WNG-291TZBFC-3 istex:BABF5DA6A89FB28644C0806533154834A545ED6E ArticleID:MASY200350706 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1022-1360 1521-3900
DOI:	10.1002/masy.200350706