Closed loop recycling of bottle crates using the restabilization technique

Kartalis, CN; Papaspyrides, CD; Pfaendner, R; Hoffmann, K; Herbst, H

dc.contributor.author	Kartalis, CN	en
dc.contributor.author	Papaspyrides, CD	en
dc.contributor.author	Pfaendner, R	en
dc.contributor.author	Hoffmann, K	en
dc.contributor.author	Herbst, H	en
dc.date.accessioned	2014-03-01T01:18:46Z
dc.date.available	2014-03-01T01:18:46Z
dc.date.issued	2003	en
dc.identifier.issn	1438-7492	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/15182
dc.subject	Closed loop recycling	en
dc.subject	HDPE bottle crates	en
dc.subject	Plastics recycling	en
dc.subject	Restabilization	en
dc.subject	Stabilizers	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.classification	Polymer Science	en
dc.subject.other	Aging of materials	en
dc.subject.other	Extrusion	en
dc.subject.other	High density polyethylenes	en
dc.subject.other	Impact testing	en
dc.subject.other	Plastic bottles	en
dc.subject.other	Remelting	en
dc.subject.other	Bottle crates	en
dc.subject.other	Recycling	en
dc.subject.other	plastic	en
dc.subject.other	polyethylene	en
dc.subject.other	polymer	en
dc.subject.other	article	en
dc.subject.other	autooxidation	en
dc.subject.other	chemical reaction	en
dc.subject.other	environmental factor	en
dc.subject.other	flow rate	en
dc.subject.other	life cycle	en
dc.subject.other	materials	en
dc.subject.other	polymerization	en
dc.subject.other	recycling	en
dc.subject.other	technology	en
dc.subject.other	temperature	en
dc.subject.other	tensile strength	en
dc.subject.other	thermostability	en
dc.subject.other	waste disposal	en
dc.subject.other	Aging	en
dc.subject.other	Bottles	en
dc.subject.other	Extrusion	en
dc.subject.other	High Density Polyethylene	en
dc.subject.other	Impact Tests	en
dc.subject.other	Plastic Containers	en
dc.subject.other	Recycling	en
dc.title	Closed loop recycling of bottle crates using the restabilization technique	en
heal.type	journalArticle	en
heal.identifier.primary	10.1002/mame.200390005	en
heal.identifier.secondary	http://dx.doi.org/10.1002/mame.200390005	en
heal.language	English	en
heal.publicationDate	2003	en
heal.abstract	A remelting-restabilization technique was applied for the recycling of post-used, yellow pigmented high density polyethylene (HPDE) bottle crates. In order to evaluate the potential of the recyclate to be used in the original application, the most important parameters were investigated: processing stability, long-term heat stability and light stability. A multiple extrusion cycles procedure at different reprocessing temperatures was performed for monitoring the processing stability of the restabilized and non-restabilized material. Oven aging was applied for about 8 800 h (i.e., more than one year) to evaluate the long term thermal stability of the crate material, as manifested by melt flow rate, tensile impact strength, and time until embrittlement measurements. To evaluate the light stability of the recycled material artificial weathering was applied for about 8 000 h, whereas the tensile impact strength was monitored. The latter data were enriched with microphotographs of the specimens surface. Finally, repigmentation was used to investigate the role of new pigments on the final performance of the recycled product. The results illustrate that restabilization is mandatory for the quality improvement of post-used crates ensuring its reuse in the original application and thus making closed loop recycling possible. [GRAPHICS] Autoxidation cycle of polymeric materials.	en
heal.publisher	WILEY-V C H VERLAG GMBH	en
heal.journalName	Macromolecular Materials and Engineering	en
dc.identifier.doi	10.1002/mame.200390005	en
dc.identifier.isi	ISI:000182047600004	en
dc.identifier.volume	288	en
dc.identifier.issue	2	en
dc.identifier.spage	124	en
dc.identifier.epage	136	en