Preparation of dextran cryogels for separation processes of binary dye and pesticide mixtures from aqueous solutions

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dc.authoridŞahiner, Nurettin / 0000-0003-0120-530X
dc.authoridAri, Betül / 0000-0003-3557-3055
dc.contributor.authorAri, Betül
dc.contributor.authorYetişkin, Berkant
dc.contributor.authorOkay, Oğuz
dc.contributor.authorŞahiner, Nurettin
dc.date.accessioned2025-01-27T20:46:11Z
dc.date.available2025-01-27T20:46:11Z
dc.date.issued2020
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractWe present mechanically strong macroporous, squeezable dextran cryogels as a column filling material for the removal and separation of binary organic dye and pesticide mixtures from aquatic medium. Dextran cryogels were prepared from aqueous solutions of dextran of various molecular weights (MWs) in the presence of 20 to 50 mol% divinyl sulfone (DVS) as a cross-linker at -18 degrees C. The cryogels have interconnected irregular pores of 100 mu m in sizes, and exhibit 69-84% reversible squeezability without damaging the 3D dextran network. Their total open pore volumes (6.3-10 mL g(-1)), weight swelling ratios in water (1380%-2200%), and mechanical parameters could easily be adjusted by both DVS mol% and MW of dextran. Dextran cryogel with the highest modulus (3.8 +/- 0.5 MPa), compressive stress (8 +/- 2 MPa) and plateau stress (0.46 +/- 0.04 MPa) was obtained at 50 mol% DVS using dextran with a MW of 15 to 25 kg center dot mol(-1). Dextran cryogels are hydrolysable at pH = 1 and 9 but stable at 7.4 independent on both the degree of cross-linking and MW of dextran. At below 50 mol% DVS, they are blood compatible and possess slight thrombogenic effect with blood clotting index value of 98% +/- 5%. They are also capable to separate binary dye and pesticide mixtures from aqueous solutions via ionic interactions.
dc.description.sponsorshipCanakkale Onsekiz Mart University [COMU BAP FYL-2019-2816/]
dc.description.sponsorshipCanakkale Onsekiz Mart University, Grant/Award Number: COMU BAP FYL-2019-2816/
dc.identifier.doi10.1002/pen.25425
dc.identifier.endpage1901
dc.identifier.issn0032-3888
dc.identifier.issn1548-2634
dc.identifier.issue8
dc.identifier.scopus2-s2.0-85085685379
dc.identifier.scopusqualityQ2
dc.identifier.startpage1890
dc.identifier.urihttps://doi.org/10.1002/pen.25425
dc.identifier.urihttps://hdl.handle.net/20.500.12428/24832
dc.identifier.volume60
dc.identifier.wosWOS:000536699400001
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherWiley
dc.relation.ispartofPolymer Engineering and Science
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectbiopolymeric cryogels
dc.subjectdextran cryogel column
dc.subjectmacroporous network
dc.subjectmechanical properties
dc.subjectpesticide removal
dc.subjecttoxic molecule separation
dc.titlePreparation of dextran cryogels for separation processes of binary dye and pesticide mixtures from aqueous solutions
dc.typeArticle

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