Dergi makalesi Açık Erişim
Cabuk, Mehmet; Yavuz, Mustafa; Unal, H. Ibrahim
<?xml version='1.0' encoding='UTF-8'?> <record xmlns="http://www.loc.gov/MARC21/slim"> <leader>00000nam##2200000uu#4500</leader> <datafield tag="540" ind1=" " ind2=" "> <subfield code="u">http://www.opendefinition.org/licenses/cc-by</subfield> <subfield code="a">Creative Commons Attribution</subfield> </datafield> <datafield tag="909" ind1="C" ind2="O"> <subfield code="o">oai:zenodo.org:65989</subfield> <subfield code="p">user-tubitak-destekli-proje-yayinlari</subfield> </datafield> <datafield tag="520" ind1=" " ind2=" "> <subfield code="a">In this study, biodegradable and conducting polyaniline-graft-chitosan (PAni-g-CS) copolymer was synthesized by radicalic polymerization using ammonium persulfate (NH4)(2)S2O8 as initiator. The synthesized copolymer was characterized by using particle size, density, band gap, H-1 NMR, TGA, and SEM measurements. The characterization results revealed the successful synthesis of the graft copolymer of PAni and CS. Electrokinetic properties and colloidal stabilities of PAni-g-CS dispersions were examined as a function of time, pH, electrolytes, various surfactants, and temperature by means of zeta-potential measurements in polar (water) and non-polar (silicone oil) media. The zeta-potential of PAni shifted to more positive region after grating with chitosan. In acidic medium, zeta-potential of the copolymer was observed to increase up to +44 mV. The presence of monovalent (Nacl) electrolyte had no impact on zeta-potential of the copolymer dispersions whereas; divalent (BaCl2) and trivalent (AlCl3) electrolytes caused the zeta-potentials of the dispersions to shift to more positive regions. The most effective surfactant on the zeta-potential of the PAni-g-CS was determined to be sodium dodecyl sulfate, which reduced the value of zeta-potential to -39 mV. Elevated temperatures caused almost no change on the zeta-potential of the copolymer dispersions. In non-aqueous media, zeta-potential of PAni-g-CS was found to be in colloidally stable region. Further, PAni-g-CS was tested against Escherichia coli and showed an improved antibacterial activity when compared to that of pristine PAni and CS. (C) 2014 Elsevier B.V. All rights reserved.</subfield> </datafield> <datafield tag="650" ind1="1" ind2="7"> <subfield code="a">cc-by</subfield> <subfield code="2">opendefinition.org</subfield> </datafield> <datafield tag="980" ind1=" " ind2=" "> <subfield code="a">user-tubitak-destekli-proje-yayinlari</subfield> </datafield> <datafield tag="909" ind1="C" ind2="4"> <subfield code="p">COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS</subfield> <subfield code="v">460</subfield> <subfield code="c">494-501</subfield> </datafield> <datafield tag="260" ind1=" " ind2=" "> <subfield code="c">2014-01-01</subfield> </datafield> <datafield tag="024" ind1=" " ind2=" "> <subfield code="a">10.1016/j.colsurfa.2014.02.053</subfield> <subfield code="2">doi</subfield> </datafield> <controlfield tag="001">65989</controlfield> <datafield tag="100" ind1=" " ind2=" "> <subfield code="a">Cabuk, Mehmet</subfield> </datafield> <datafield tag="856" ind1="4" ind2=" "> <subfield code="u">https://aperta.ulakbim.gov.trrecord/65989/files/bib-5b7e75b4-4ee6-4c26-8dc4-519d9a78ba4e.txt</subfield> <subfield code="s">249</subfield> <subfield code="z">md5:584189a60bc28f8e4beecea740ca38be</subfield> </datafield> <controlfield tag="005">20210316021540.0</controlfield> <datafield tag="980" ind1=" " ind2=" "> <subfield code="a">publication</subfield> <subfield code="b">article</subfield> </datafield> <datafield tag="700" ind1=" " ind2=" "> <subfield code="a">Yavuz, Mustafa</subfield> <subfield code="u">Suleyman Demirel Univ, Fac Arts & Sci, Dept Chem, TR-32200 Isparta, Turkey</subfield> </datafield> <datafield tag="700" ind1=" " ind2=" "> <subfield code="a">Unal, H. Ibrahim</subfield> <subfield code="u">Gazi Univ, Fac Sci, Dept Chem, Smart Mat Res Lab, Ankara, Turkey</subfield> </datafield> <datafield tag="245" ind1=" " ind2=" "> <subfield code="a">Electrokinetic properties of biodegradable conducting polyaniline-graft-chitosan copolymer in aqueous and non-aqueous media</subfield> </datafield> <datafield tag="542" ind1=" " ind2=" "> <subfield code="l">open</subfield> </datafield> </record>
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