Structure of starch-bentonite gels

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dc.contributor.authorBesun, N
dc.contributor.authorPeker, S
dc.contributor.authorKokturk, U
dc.contributor.authorYilmaz, H
dc.date.accessioned2019-10-27T11:53:56Z
dc.date.available2019-10-27T11:53:56Z
dc.date.issued1997
dc.departmentEge Üniversitesien_US
dc.description.abstractMixed gels of starch and bentonite are investigated in the interval 0.056-0.089 of total solids/water ratio and 0-100% starch in the solids. The bentonite was a sodium calcium bentonite with a Na/Ca ratio of 1.76. In water it forms gels consisting of a network of band-type structures. Starch forms gels through hydrogen bonds between granules and/or amylose and amylopectin present on the external surfaces of granules and/or in fully stretched form. Mixed gels of bentonite and starch were obtained by adding corn starch granules to the already formed bentonite gels and heating the mixture above the Kofler gelatinization temperature. Amylose and amylopectin were adsorbed on strands of band-type structures of montmorillonite lamellae. Starch gellation, e.g. diffusion of amylose out of the granule, was facilitated in the presence of bentonite, On the other hand. the presence of starch favored delamination of the montmorillonite particle into thinner lamellae, Maximum gelatinization and polymer adsorption were observed for gels with 20% starch and 80% bentonite. Montmorillonite networks formed the continuous phase for 0-80% starch, At higher starch concentrations. montmorillonite flakes were dispersed within the polymer network. increase in the water content of the gels caused segregation of the bentonite and starch.en_US
dc.identifier.doi10.1007/s003960050095
dc.identifier.endpage389en_US
dc.identifier.issn0303-402X
dc.identifier.issn0303-402Xen_US
dc.identifier.issue4en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage378en_US
dc.identifier.urihttps://doi.org/10.1007/s003960050095
dc.identifier.urihttps://hdl.handle.net/11454/34962
dc.identifier.volume275en_US
dc.identifier.wosWOS:A1997WX40000009en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherDr Dietrich Steinkopff Verlagen_US
dc.relation.ispartofColloid and Polymer Scienceen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectmixed gelsen_US
dc.subjectstarchen_US
dc.subjectbentoniteen_US
dc.subjectband-type structuresen_US
dc.subjectpolymer adsorptionen_US
dc.titleStructure of starch-bentonite gelsen_US
dc.typeArticleen_US

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