| Biodegradability and mechanical properties of poly-(beta-hydroxybutyrate-co-beta-hydroxyvalerate)-starch blends. | |
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MedLine Citation:
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PMID: 8476296 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Wheat starch granules and poly-(beta-hydroxybutyrate-co-beta-hydroxyvalerate) [P(HB-co-HV), (19.1 mol% HV)] were blended at 160 degrees C. Increasing the starch content from 0 to 50% (wt/wt) decreased the tensile strength of P(HB-co-HV) from 18 MPa to 8 MPa and diminished flexibility as Young's modulus increased from 1,525 MPa to 2,498 MPa, but overall mechanical properties of the polymer remained in a useful range. A mixed microbial culture required more than 20 days to degrade 150-microns-thick samples of 100% P(HB-co-HV), whereas samples containing 50% (wt/wt) starch disappeared in fewer than 8 days. Starch granules degraded before P(HB-co-HV) did. Aerobic degradation proceeded more rapidly than anaerobic degradation. |
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Authors:
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B A Ramsay; V Langlade; P J Carreau; J A Ramsay |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Applied and environmental microbiology Volume: 59 ISSN: 0099-2240 ISO Abbreviation: Appl. Environ. Microbiol. Publication Date: 1993 Apr |
Date Detail:
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Created Date: 1993-05-18 Completed Date: 1993-05-18 Revised Date: 2010-09-13 |
Medline Journal Info:
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Nlm Unique ID: 7605801 Medline TA: Appl Environ Microbiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 1242-6 Citation Subset: IM |
Affiliation:
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Département de Génie Chimique, Ecole Polytechnique de Montréal, Québec, Canada. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Aerobiosis Anaerobiosis Biodegradation, Environmental Microscopy, Electron, Scanning Polyesters / chemistry, metabolism* Starch / chemistry, metabolism* |
| Chemical | |
Reg. No./Substance:
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0/Polyesters; 0/poly(3-hydroxybutyrate)-co-(3-hydroxyvalerate); 9005-25-8/Starch |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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