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dc.contributor.CRUESPUniversidade Estadual de Campinaspt_BR
dc.typeArtigo de periódicopt_BR
dc.titleCorona-Treated Polyethylene Films Are Macroscopic Charge Bilayerspt_BR
dc.contributor.authorSantos, LPpt_BR
dc.contributor.authorBernardes, JSpt_BR
dc.contributor.authorGalembeck, Fpt_BR
unicamp.authorSantos, Leandra P. Bernardes, Juliana S. Galembeck, Fernando Univ Campinas UNICAMP, Inst Chem, BR-13083970 Campinas, SP, Brazilpt_BR
unicamp.authorBernardes, Juliana S. Galembeck, Fernando Natl Ctr Energy & Mat Res, Natl Nanotechnol Lab, BR-13083970 Campinas, SP, Brazilpt_BR
dc.subject.wosContact Electrificationpt_BR
dc.subject.wosElectroluminescence Measurementspt_BR
dc.subject.wosPolypropylene Filmspt_BR
dc.subject.wosPolyolefin Filmspt_BR
dc.subject.wosPotential Decaypt_BR
dc.subject.wosIonic Electretspt_BR
dc.description.abstractTop and bottom surfaces of polyethylene (PE) films exposed to corona discharge display large and opposite electrostatic potentials, forming an electric bilayer in agreement with recent and unexpected findings from Zhiqiang et al. Water wetting, chemical composition and roughness of the two surfaces are different. Surprisingly, the bottom surface, opposite to the corona electrode is charged but it is not oxidized, neither is it wetted with water. Moreover, its morphology is unaltered by charging, while the hydrophilic top surface is much rougher with protruding islands that are the result of oxidation followed by phase separation and polymer-polymer dewetting. Common liquids extract the oxidized, hydrophilic material formed at the upper surface, a result that explains the well-known sensitivity of adhesive joints made using corona-treated thermoplastics to liquids, especially water. These results show that poling the surface closer to the corona electrode triggers another but different charge build-up process at the opposite surface. The outcome is another poled PE surface showing high potential but with unchanged chemical composition, morphology and wetting behavior as the pristine surface, thus opening new possibilities for surface
dc.publisherAmer Chemical Socpt_BR
dc.identifier.citationLangmuir. Amer Chemical Soc, v. 29, n. 3, n. 892, n. 901, 2013.pt_BR
dc.sourceWeb of Sciencept_BR
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt_BR
dc.description.sponsorship1Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.description.sponsorship1Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt_BR
dc.description.provenanceMade available in DSpace on 2014-07-30T14:02:39Z (GMT). No. of bitstreams: 0 Previous issue date: 2013en
dc.description.provenanceMade available in DSpace on 2015-11-26T17:27:31Z (GMT). No. of bitstreams: 0 Previous issue date: 2013en
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