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Interfaces study of all-polysaccharide composite films

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dc.title Interfaces study of all-polysaccharide composite films en
dc.contributor.author Šimkovic, Ivan
dc.contributor.author Kelnar, Ivan
dc.contributor.author Mendichi, Raniero
dc.contributor.author Tracz, Adam
dc.contributor.author Filip, Jaroslav
dc.contributor.author Bertók, Tomáš
dc.contributor.author Kasak, Peter
dc.relation.ispartof Chemical Papers
dc.identifier.issn 0366-6352 OCLC, Ulrich, Sherpa/RoMEO, JCR
dc.date.issued 2018
utb.relation.volume 72
utb.relation.issue 3
dc.citation.spage 711
dc.citation.epage 718
dc.type article
dc.language.iso en
dc.publisher Springer International Publishing
dc.identifier.doi 10.1007/s11696-017-0329-y
dc.relation.uri https://link.springer.com/article/10.1007/s11696-017-0329-y
dc.subject All-polysaccharide composites en
dc.subject Elemental analysis en
dc.subject Film properties study en
dc.subject Ionic interactions en
dc.description.abstract Films made of xylan (X) and quaternized chitosan (QC) were prepared and the interactions of the polysaccharides on interfaces were discussed. According to elemental analysis, the X film contained also cellulose (31%) which could not be separated from the water suspension. The QC sample was soluble in water due to the presence of quaternized glucosamine units (4%) despite the presence of equal amounts of chitosan (CS, 48%) and chitin (CT, 48%). According to mechanical tests on QC/X = 1/3 composite film, the modulus and tensile strength values were the best from all mixtures measured, but still not better than on the film from X. We assume this is due to the sorption of xylan onto the surface of insoluble cellulose fibrils in the X film. Cyclic voltammetry indicates that the incorporation of X into the QC film decreases the overall positive charge provided by the QC. The X composite with net negative charge is indeed a barrier against the diffusion of ferricyanide anions. Based on TG/DTG/DTA analysis, the onset temperatures (OT) are decreasing with increasing X content in the blended films. X and QC films exhibited the highest OT values in comparison with the blended samples. The lowest OT temperature was observed at QC/X = 1/3. We think it is due to the thermocatalytic effect of the 4-O-methyl-d-glucuronate in X and the QC quaternary groups on the thermolysis–thermo-oxidation mechanism. According to AFM, the QC/X = 1/3 film exhibited the largest roughness values on both sides of the films, likely due to having the highest density of electrostatic interactions. XRD profiles of the films indicate some crystalline residues of cellulose in the xylan component as well as some chitin in the QC component. We assume that the properties are the result of the combination of the electrostatic interactions of carboxyl and quaternary groups of the soluble components of X and QC bonded to the surface of insoluble cellulose fibrils by hydrogen bonds. This probably results in both synergistic and antagonistic effects expressed by the improved or diminished values of determined properties. © 2017, Institute of Chemistry, Slovak Academy of Sciences. en
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1007781
utb.identifier.obdid 43878907
utb.identifier.scopus 2-s2.0-85042356778
utb.identifier.wok 000425783100020
utb.identifier.coden CHPAE
utb.source j-scopus
dc.date.accessioned 2018-04-23T15:01:43Z
dc.date.available 2018-04-23T15:01:43Z
dc.description.sponsorship 26220120054, AUTO21 Network of Centres of Excellence; ERDF, European Regional Development Fund; COFORD, Programme of Competitive Forestry Research for Development; QU, Qatar University; 2/0087/11, SAIA, Slovak Academic Information Agency; 2/7030/7, SAIA, Slovak Academic Information Agency; 2/0007/13, SAIA, Slovak Academic Information Agency; 2/0100/14, SAIA, Slovak Academic Information Agency; 2003SP200280301; 2003SP200280203
dc.description.sponsorship Slovak Granting Agency VEGA [2/7030/7, 2/0087/11, 2/0007/13, 2/0100/14]; Research & Development Operational Program - ERDF [ITMS 26220120054]; Qatar University [QUUG-CAM-2017-1]; [2003SP200280203]; [2003SP200280301]
utb.contributor.internalauthor Filip, Jaroslav
utb.fulltext.affiliation Ivan Šimkovic 1 http://orcid.org/0000-0003-4107-1529 · Ivan Kelnar 2 · Raniero Mendichi 3 · Adam Tracz 4 · Jaroslav Filip 5 · Tomáš Bertók 1 · Peter Kasak 6 * Ivan Šimkovic chemsimk@savba.sk 1 Institute of Chemistry, Slovak Academy of Sciences, 845 38 Bratislava, Slovak Republic 2 Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, 16206 Prague, Czech Republic 3 Istituto per lo Studio delle Macromolecole (CNR), Via E. Bassini 15, 20133 Milan, Italy 4 Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, 90‐393 Lodz, Poland 5 Department of Environment Protection Engineering, Tomas Bata University, 76272 Zlin, Czech Republic 6 Centre for Advanced Materials, Qatar University, PO box 2731, Doha, Qatar
utb.fulltext.dates Received: 20 August 2017 / Accepted: 27 October 2017 / Published online: 4 November 2017
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utb.fulltext.sponsorship We gratefully acknowledge funding from State programs #2003SP200280203 and 2003SP200280301; Slovak Granting Agency VEGA (Project Nos. 2/7030/7, 2/0087/11, 2/0007/13 and 2/0100/14). We thank Eva Hadzimová for performing the TG/DTG/DTA experiments. This contribution is also the result of the project implementation: Centre of Excellence for White-Green Biotechnology, ITMS 26220120054, supported by the Research & Development Operational Program funded by the ERDF. P.K. thanks Qatar University for QUUG-CAM-2017-1 grant funding.
utb.scopus.affiliation Institute of Chemistry, Slovak Academy of Sciences, Bratislava, Slovakia; Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Prague, Czech Republic; Istituto per lo Studio delle Macromolecole (CNR), Via E. Bassini 15, Milan, Italy; Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Lodz, Poland; Department of Environment Protection Engineering, Tomas Bata University, Zlin, Czech Republic; Centre for Advanced Materials, Qatar University, PO box 2731, Doha, Qatar
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