Preparation and characterization of biodegradable rigid polyurethane foams from the liquefied eucalyptus and pine woods

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dc.contributor.authorErtas, Murat
dc.contributor.authorFidan, Muhammed Said
dc.contributor.authorAlma, Mehmet Hakki D.L.D.A.L.
dc.date.accessioned2026-02-12T21:02:52Z
dc.date.available2026-02-12T21:02:52Z
dc.date.issued2014
dc.departmentBursa Teknik Üniversitesi
dc.description.abstractIn this study, eucalyptus (Eucalyptus camaldulensis L.) and pine (Pinus sylvestris L.) woods were liquefied using the the blended solvents mixture of polyethylene glycol PEG-400/glycerin in the presence of sulfuric acid as a catalyst at 140-160°C for 120 min. The insoluble parts in the liquefied eucalyptus and pine were found as 17.8 and 5.5 wt. %, respectively. The acid and hydroxyl numbers of the liquefied eucalyptus and pine were determined and compared with each other. Polyurethane-type rigid foams (RPUFs) were successfully prepared by a co-polymerization of the liquefied woods (LWs) and polymeric methylene diphenylene diisocyanate (PMDI). The compressive strength (120 to 250 kPa), the modulus of elasticity (1 to 6 MPa), the density (20 to 50 kg.nr-3) and thermal conductivity (0.0352 to 0.0374 W.mK -1) of the RPUFs prepared from the LWs were found to be almost comparable to those of the synthetic foams. Furthermore, the biodegradability of the biomass-based foams was higher than that of the synthetic ones.
dc.identifier.endpage108
dc.identifier.issn1336-4561
dc.identifier.issue1
dc.identifier.scopus2-s2.0-84903176122
dc.identifier.scopusqualityQ2
dc.identifier.startpage97
dc.identifier.urihttps://hdl.handle.net/20.500.12885/6597
dc.identifier.volume59
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherStatny Drevarsky Vyskumny Ustav sdvu4@computel.sk
dc.relation.ispartofWood Research
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.snmzKA_Scopus_20260212
dc.subjectBiodegradable
dc.subjectBiomass
dc.subjectEucalyptus camaldulensis
dc.subjectLiquefaction
dc.subjectPinus sylvestris
dc.subjectPolyurethane foams
dc.titlePreparation and characterization of biodegradable rigid polyurethane foams from the liquefied eucalyptus and pine woods
dc.typeArticle

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