Surface Modification Of Polyelectrolyte Multilayers By High Radio Frequency Air Plasma Treatment

dc.creatorMartins T.D.
dc.creatorBataglioli R.A.
dc.creatorTaketa T.B.
dc.creatorVasconcellos F.D.C.
dc.creatorBeppu M.M.
dc.date2015
dc.date2015-06-25T12:50:58Z
dc.date2015-11-26T14:57:53Z
dc.date2015-06-25T12:50:58Z
dc.date2015-11-26T14:57:53Z
dc.date.accessioned2018-03-28T22:09:39Z
dc.date.available2018-03-28T22:09:39Z
dc.identifier
dc.identifierApplied Surface Science. Elsevier, v. 329, n. , p. 287 - 291, 2015.
dc.identifier1694332
dc.identifier10.1016/j.apsusc.2014.12.010
dc.identifierhttp://www.scopus.com/inward/record.url?eid=2-s2.0-84922845604&partnerID=40&md5=618c0043ed48256cbba25e340fa3e101
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/85190
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/85190
dc.identifier2-s2.0-84922845604
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1255745
dc.descriptionLow-temperature plasma treatments are used to perform surface modification on polymers, aiming to improve the surface properties according to the desired application. In this work, polyelectrolyte multilayers (PEMs), built by layer-by-layer deposition technique, were treated using high frequency low-temperature air plasma. We evaluated the effect of the exposure time (20 and 300 s) and its effects on PEMs with two different top layers: alginate and carboxymethylcellulose. Chitosan was used as the cationic polymer to build the LbL films with the oppositely charged anionic polymers, alginate and carboxymethylcellulose. Our results showed that the surface topology, wettability and free charges within layers are highly correlated to the polymer pair used. PEMs of the chitosan/alginate system are thinner and hydrophilic, and present a surface with wider peaks. We found that plasma treatment promotes substantial changes on the PEMs and that 20 s of exposure time is enough to perform these changes. In all cases, after plasma treatment, PEMs' thickness and free charge distribution were reduced and wettability was enhanced.
dc.description329
dc.description
dc.description287
dc.description291
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dc.languageen
dc.publisherElsevier
dc.relationApplied Surface Science
dc.rightsfechado
dc.sourceScopus
dc.titleSurface Modification Of Polyelectrolyte Multilayers By High Radio Frequency Air Plasma Treatment
dc.typeArtículos de revistas


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