Matrix-free hydrodynamic study on the size distribution and conformation of three technical lignins from wood and non-wood

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dc.authorid0000-0002-0335-2162en_US
dc.authorid0000-0002-7607-6808en_US
dc.authorid0000-0001-5305-799X
dc.authorid0000-0002-3572-1428
dc.authorid0000-0002-7050-4082
dc.contributor.authorAlzahrani, Qushmua
dc.contributor.authorAdams, Gary
dc.contributor.authorGillis, Richard B.
dc.contributor.authorBesong, Tabot
dc.contributor.authorKök, Mehmet Şamil
dc.date.accessioned2021-06-23T19:43:54Z
dc.date.available2021-06-23T19:43:54Z
dc.date.issued2016
dc.departmentBAİBÜ, Mühendislik Fakültesi, Gıda Mühendisliği Bölümüen_US
dc.description.abstractMolecular weight (MW) and related conformational data of three commercially available technical lignins (Alcell L, kraft L, and soda L) have been studied by means of analytical ultracentrifugation, taking advantage of some recent developments in both sedimentation velocity and sedimentation equilibrium determinations. The lignins were dissolved in dimethyl sulphoxide (with ca. 90% solubility), and solutions were studied with regards to their oligomeric state, heterogeneity profiles (distribution of sedimentation coefficients), and molecular weight distributions (MWD). Alcell L and soda L have similar properties showing one major low MW component and two minor high MW components, whereas kraft L appears to be larger and more uniform, i.e., it shows a more mono-disperse MWD. Weight average molecular weight (M-w) data from sedimentation equilibrium obtained by the new SEDFIT-MSTAR procedure in conjunction with MULTISIG analysis were found to be similar to 18 kDa (Alcell L), 25 kDa (kraft L), and 15 kDa (soda L). Further analysis of the data by means of the routines MULTISIG and M_INVEQ confirmed the presence of additional components in Alcell L and soda L, and the larger size and high degree of mono-dispersity of kraft L. The intrinsic viscosity data of the three lignins were found to be very similar in the range of 22-24 ml g(-1), and all data were consistent with an elongated plate shape molecular structure with an equivalent discoid aspect ratio similar to 30.en_US
dc.identifier.doi10.1515/hf-2014-0318
dc.identifier.endpage125en_US
dc.identifier.issn0018-3830
dc.identifier.issn1437-434X
dc.identifier.issue2en_US
dc.identifier.scopus2-s2.0-84956640086en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage117en_US
dc.identifier.urihttps://doi.org/10.1515/hf-2014-0318
dc.identifier.urihttps://hdl.handle.net/20.500.12491/8876
dc.identifier.volume70en_US
dc.identifier.wosWOS:000370958400003en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorKök, Mehmet Şamil
dc.language.isoenen_US
dc.publisherWalter De Gruyter Gmbhen_US
dc.relation.ispartofHolzforschungen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectAlcell Len_US
dc.subjectAnalytical Ultracentrifugationen_US
dc.subjectDisc Shapeen_US
dc.subjectDMSOen_US
dc.subjectKraft Len_US
dc.subjectSoda Len_US
dc.subjectViscometryen_US
dc.titleMatrix-free hydrodynamic study on the size distribution and conformation of three technical lignins from wood and non-wooden_US
dc.typeArticleen_US

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