Medidas de tensão superficial pelo método de contagem de gotas: descrição do método e experimentos com tensoativos não-iônicos etoxilados

Surface tension measurement by drop counting method: method description and experiments with etoxilated non-ionic surfactants

dc.creatorTeixeira Neto, Érico
dc.creatorMalta, Marcos Maziero
dc.creatorSantos, Ronaldo Gonçalves dos
dc.date2009-01-01
dc.date2014-07-17T15:00:41Z
dc.date2015-11-26T11:56:43Z
dc.date2014-07-17T15:00:41Z
dc.date2015-11-26T11:56:43Z
dc.date.accessioned2018-03-28T20:59:38Z
dc.date.available2018-03-28T20:59:38Z
dc.identifierQuímica Nova. Sociedade Brasileira de Química, v. 32, n. 1, p. 223-227, 2009.
dc.identifier0100-4042
dc.identifierS0100-40422009000100037
dc.identifier10.1590/S0100-40422009000100037
dc.identifierhttp://dx.doi.org/10.1590/S0100-40422009000100037
dc.identifierhttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422009000100037
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/23830
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/23830
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1238576
dc.descriptionSurface tension knowledge of surfactants aqueous solutions is important during amphiphilic molecule manufacturing and new product development, as feedback information to handle synthesis parameters to target performance. Drop counting method is an interesting simplification of drop weight method for surface tension measurements. A simple laboratory measurement device, with capability for temperature control, was assembled to allow investigation of ethoxylated surfactants. The implementation of the method was preceded by a detailed investigation of two factors that may affect the measured surface tension: drop formation velocity and surfactant ethoxylation degree. The limitations of the method are discussed on this basis.
dc.description223
dc.description227
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.languagept
dc.publisherSociedade Brasileira de Química
dc.relationQuímica Nova
dc.rightsaberto
dc.sourceSciELO
dc.subjectnonylphenol ethoxylates
dc.subjectethylene oxide
dc.subjectpetrochemical industry
dc.titleMedidas de tensão superficial pelo método de contagem de gotas: descrição do método e experimentos com tensoativos não-iônicos etoxilados
dc.titleSurface tension measurement by drop counting method: method description and experiments with etoxilated non-ionic surfactants
dc.typeArtículos de revistas


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