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dc.contributor.authorVerbeek, Casparus Johan R.
dc.contributor.authorHicks, Talia
dc.contributor.authorLangdon, Alan
dc.date.accessioned2012-01-23T03:18:14Z
dc.date.available2012-01-23T03:18:14Z
dc.date.issued2011
dc.identifier.citationVebeek, C.J.R., Hicks, T. & Langdon, A. (2011). Biodegradation of bloodmeal-based thermoplastics in green-waste composting. Journal of Polymers and the Environment, published online 19 October 2011.en_NZ
dc.identifier.urihttps://hdl.handle.net/10289/5977
dc.description.abstractPolymers that are compostable and manufactured from renewable resources have gained significant importance in recent years. The objective of this work was to assess the biodegradability of bloodmeal-based thermoplastics in a commercial green-waste composting situation. Materials plasticised with tri-ethylene–glycol lost about 45% of their original mass after 12 weeks composting while unplasticised samples lost 35%. Degradation appeared to have been in two phases; an initial loss of soluble, low molecular compounds in the mesophilic phase followed by degradation of high molecular compounds as the temperature exceeded about 40 °C in the thermophilic phase. It was found that as degradation proceeded materials became more soluble. In addition, plasticised and unplasticized samples contained about 60 wt% moisture after 4 weeks of composting conditioning at 50% relative humidity resulted in approximately 8–10 wt% moisture, unaffected by the extent of degradation. FTIR revealed that proteins underwent hydrolytic cleavage resulting in the formation of primary amines. A significant reduction in combustion temperature was observed, indicative of a reduction in covalent bonding, likely due to shorter chains lengths or less cross-linking.en_NZ
dc.language.isoen
dc.publisherSpringeren_NZ
dc.relation.urihttp://www.springerlink.com/content/u16708608ug35621/en_NZ
dc.subjectbloodmealen_NZ
dc.subjectcompositingen_NZ
dc.subjectthermoplasticen_NZ
dc.titleBiodegradation of bloodmeal-based thermoplastics in green-waste compostingen_NZ
dc.typeJournal Articleen_NZ
dc.identifier.doi10.1007/s10924-011-0375-4en_NZ
dc.relation.isPartOfJournal of Polymers and the Environmenten_NZ
pubs.begin-page1en_NZ
pubs.elements-id36785
pubs.end-page10en_NZ
pubs.issue1en_NZ
pubs.volumeonlineen_NZ


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