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dc.contributor.authorBrzeska, Joanna
dc.contributor.authorMorawska, Magda
dc.contributor.authorSikorska, Wanda
dc.contributor.authorTercjak, Agnieszka
dc.contributor.authorKowalczuk, Marek
dc.contributor.authorRutkowska, Maria
dc.date.accessioned2017-08-11T08:32:27Z
dc.date.available2017-08-11T08:32:27Z
dc.date.issued2017-06-14
dc.identifier.citationBrzeska, J., Morawska, M., Sikorska, W. Tercjak, A., Kowalczuk, M., Rutkowska, M. (2017) 'Degradability of cross-linked polyurethanes based on synthetic polyhydroxybutyrate and modified with polylactide' Chemical Papers, 71(11), pp. 2243-2251
dc.identifier.issn1336-9075
dc.identifier.doi10.1007/s11696-017-0218-4
dc.identifier.urihttp://hdl.handle.net/2436/620581
dc.description.abstractIn many areas of application of conventional non-degradable cross-linked polyurethanes (PUR), there is a need for their degradation under the influence of specific environmental factors. It is practiced by incorporation of sensitive to degradation compounds (usually of natural origin) into the polyurethane structure, or by mixing them with polyurethanes. Cross-linked polyurethanes (with 10 and 30%wt amount of synthetic poly([R,S]-3-hydroxybutyrate) (R,S-PHB) in soft segments) and their physical blends with poly([d,l]-lactide) (PDLLA) were investigated and then degraded under hydrolytic (phosphate buffer solution) and oxidative (CoCl2/H2O2) conditions. The rate of degradation was monitored by changes of samples mass, morphology of surface and their thermal properties. Despite the small weight losses of samples, the changes of thermal properties of polymers and topography of their surface indicated that they were susceptible to gradual degradation under oxidative and hydrolytic conditions. Blends of PDLLA and polyurethane with 30 wt% of R,S-PHB in soft segments and PUR/PDLLA blends absorbed more water and degraded faster than polyurethane with low amount of R,S-PHB.
dc.language.isoen
dc.publisherSpringer
dc.relation.urlhttp://link.springer.com/10.1007/s11696-017-0218-4
dc.subjectDegradable polymers
dc.subjectCross-linked Polyurethanes
dc.subjectPolish Academy of Sciences
dc.subjectUniversity of Wolverhampton
dc.subjectUniversity of the Basque Country (UPV/EHU)
dc.subjectGdynia Maritime University
dc.titleDegradability of cross-linked polyurethanes based on synthetic polyhydroxybutyrate and modified with polylactide
dc.typeJournal article
dc.identifier.journalChemical Papers
dc.date.accepted2017-06-01
rioxxterms.funderUniversity of Wolverhampton
rioxxterms.identifier.projectUoW110817MK
rioxxterms.versionVoR
rioxxterms.licenseref.urihttps://creativecommons.org/CC BY-NC-ND 4.0
rioxxterms.licenseref.startdate2017-08-11
dc.source.volume71
dc.source.issue11
dc.source.beginpage2243
dc.source.endpage2251
refterms.dateFCD2018-10-19T09:26:31Z
refterms.versionFCDVoR
refterms.dateFOA2017-08-11T00:00:00Z
html.description.abstractIn many areas of application of conventional non-degradable cross-linked polyurethanes (PUR), there is a need for their degradation under the influence of specific environmental factors. It is practiced by incorporation of sensitive to degradation compounds (usually of natural origin) into the polyurethane structure, or by mixing them with polyurethanes. Cross-linked polyurethanes (with 10 and 30%wt amount of synthetic poly([R,S]-3-hydroxybutyrate) (R,S-PHB) in soft segments) and their physical blends with poly([d,l]-lactide) (PDLLA) were investigated and then degraded under hydrolytic (phosphate buffer solution) and oxidative (CoCl2/H2O2) conditions. The rate of degradation was monitored by changes of samples mass, morphology of surface and their thermal properties. Despite the small weight losses of samples, the changes of thermal properties of polymers and topography of their surface indicated that they were susceptible to gradual degradation under oxidative and hydrolytic conditions. Blends of PDLLA and polyurethane with 30 wt% of R,S-PHB in soft segments and PUR/PDLLA blends absorbed more water and degraded faster than polyurethane with low amount of R,S-PHB.


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