Biodegradable PBAT/PLA blend with bioactive MCPA-PHBV conjugate suppresses weed growth

2.50
Hdl Handle:
http://hdl.handle.net/2436/621024
Title:
Biodegradable PBAT/PLA blend with bioactive MCPA-PHBV conjugate suppresses weed growth
Authors:
Kwiecień, Iwona; Adamus, Grazyna; Jiang, Guozhan; Radecka, Iza ( 0000-0003-3257-8803 ) ; Baldwin, Timothy C.; Khan, Habib R.; Johnston, Brian; Pennetta, Valentina; Hill, David; Bretz, Inna; Kowalczuk, Marek M. ( 0000-0002-2877-7466 )
Abstract:
The herbicide 2-methyl-4-chlorophenoxyacetic acid (MCPA) conjugated with poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) was prepared via a melt transesterification route. The resultant bioactive oligomer was then mixed with a blend of polylactide (PLA) and poly(butylene adipate-co-terephthalate) (PBAT) with different loadings; to manufacture films to be used as a bioactive, biodegradable mulch to deliver the herbicide to target broadleaf weed species. The biological targeting of the MCPA-PHBV conjugate in the mulch film was investigated under glasshouse conditions using faba bean (Vicia faba) as a selective (non-target) model crop species having broadleaf morphology. The presence of the MCPA-PHBV conjugate in the biodegradable PBTA/PLA blend was shown to completely suppress the growth of broadleaf weed species, whilst displaying only a mild effect on the growth of the model crop. The degradation of the mulch film under glasshouse conditions was quite slow. The release of the MCPA-PHBV during this process was detected using NMR, GPC, EDS and DSC analyses, indicating that the majority of the MCPA diffused out after MCPA-PHBV conjugate bond scission. These data provide a strong “proof of concept” and show that this biodegradable, bioactive film is a good candidate for future field applications and may be of wide agricultural applicability.
Citation:
Biodegradable PBAT/PLA blend with bioactive MCPA-PHBV conjugate suppresses weed growth 2017 Biomacromolecules
Publisher:
ACS Paragon Plus Environment
Journal:
Biomacromolecules
Issue Date:
20-Dec-2017
URI:
http://hdl.handle.net/2436/621024
DOI:
10.1021/acs.biomac.7b01636
Additional Links:
http://pubs.acs.org/doi/10.1021/acs.biomac.7b01636
Type:
Article
Language:
en
Description:
This document is confidential and is proprietary to the American Chemical Society and its authors. Do not copy or disclose without written permission.
ISSN:
1525-7797
Sponsors:
This work was funded by the Research Investment Fund, University of Wolverhampton (Wolverhampton, UK).
Appears in Collections:
FSE

Full metadata record

DC FieldValue Language
dc.contributor.authorKwiecień, Iwonaen
dc.contributor.authorAdamus, Grazynaen
dc.contributor.authorJiang, Guozhanen
dc.contributor.authorRadecka, Izaen
dc.contributor.authorBaldwin, Timothy C.en
dc.contributor.authorKhan, Habib R.en
dc.contributor.authorJohnston, Brianen
dc.contributor.authorPennetta, Valentinaen
dc.contributor.authorHill, Daviden
dc.contributor.authorBretz, Innaen
dc.contributor.authorKowalczuk, Marek M.en
dc.date.accessioned2018-01-08T15:01:34Z-
dc.date.available2018-01-08T15:01:34Z-
dc.date.issued2017-12-20-
dc.identifier.citationBiodegradable PBAT/PLA blend with bioactive MCPA-PHBV conjugate suppresses weed growth 2017 Biomacromoleculesen
dc.identifier.issn1525-7797en
dc.identifier.doi10.1021/acs.biomac.7b01636-
dc.identifier.urihttp://hdl.handle.net/2436/621024-
dc.descriptionThis document is confidential and is proprietary to the American Chemical Society and its authors. Do not copy or disclose without written permission.en
dc.description.abstractThe herbicide 2-methyl-4-chlorophenoxyacetic acid (MCPA) conjugated with poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) was prepared via a melt transesterification route. The resultant bioactive oligomer was then mixed with a blend of polylactide (PLA) and poly(butylene adipate-co-terephthalate) (PBAT) with different loadings; to manufacture films to be used as a bioactive, biodegradable mulch to deliver the herbicide to target broadleaf weed species. The biological targeting of the MCPA-PHBV conjugate in the mulch film was investigated under glasshouse conditions using faba bean (Vicia faba) as a selective (non-target) model crop species having broadleaf morphology. The presence of the MCPA-PHBV conjugate in the biodegradable PBTA/PLA blend was shown to completely suppress the growth of broadleaf weed species, whilst displaying only a mild effect on the growth of the model crop. The degradation of the mulch film under glasshouse conditions was quite slow. The release of the MCPA-PHBV during this process was detected using NMR, GPC, EDS and DSC analyses, indicating that the majority of the MCPA diffused out after MCPA-PHBV conjugate bond scission. These data provide a strong “proof of concept” and show that this biodegradable, bioactive film is a good candidate for future field applications and may be of wide agricultural applicability.en
dc.description.sponsorshipThis work was funded by the Research Investment Fund, University of Wolverhampton (Wolverhampton, UK).en
dc.language.isoenen
dc.publisherACS Paragon Plus Environmenten
dc.relation.urlhttp://pubs.acs.org/doi/10.1021/acs.biomac.7b01636en
dc.rightsArchived with thanks to Biomacromoleculesen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectMCPA conjugateen
dc.subjectpolyhydroxyalkanoatesen
dc.subjectbiodegradabilityen
dc.subjectPBATen
dc.subjectmulchen
dc.titleBiodegradable PBAT/PLA blend with bioactive MCPA-PHBV conjugate suppresses weed growthen
dc.typeArticleen
dc.identifier.journalBiomacromoleculesen
dc.date.accepted2017-12-
rioxxterms.funderThis work was funded by the Research Investment Fund, University of Wolverhampton (Wolverhampton, UK).en
rioxxterms.identifier.project080118IRen
rioxxterms.versionAMen
rioxxterms.licenseref.urihttps://creativecommons.org/CC BY-NC-ND 4.0en
rioxxterms.licenseref.startdate2018-12-19en
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