| dc.creator | Nascimento, André Ezequiel Gomes do | |
| dc.creator | Barros Neto, Eduardo Lins de | |
| dc.creator | Moura, Maria Carlenise Paiva de Alencar | |
| dc.creator | Dantas, Tereza Neuma de Castro | |
| dc.creator | Dantas Neto, Afonso Avelino | |
| dc.date | 2021-11-30T14:22:55Z | |
| dc.date | 2021-11-30T14:22:55Z | |
| dc.date | 2015-09-05 | |
| dc.identifier | DANTAS NETO, Afonso Avelino ; NASCIMENTO, André Ezequiel Gomes do; BARROS NETO, Eduardo Lins de; MOURA, Maria Carlenise Paiva de Alencar ; DANTAS, Tereza Neuma de Castro. Wettability of paraffin surfaces by nonionic surfactants: evaluation of surface roughness and nonylphenol ethoxylation degree. Colloids and Surfaces. A, Physicochemical and Engineering Aspects (Print), v. 1, p. 1-6, 2014. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0927775714008516?via%3Dihub#!. Acesso em: 30 nov. 2021. DOI: https://doi.org/10.1016/j.colsurfa.2014.11.003 | |
| dc.identifier | 0927-7757 | |
| dc.identifier | https://repositorio.ufrn.br/handle/123456789/45097 | |
| dc.description | Wettability is a widely used property in many industrial applications. This study aimed at determining
the wettability of long-chain paraffin surfaces by nonionic surfactants, nonylphenol polyethoxylates with
different ethoxylation degrees. Interactions between solid and liquid phases were determined by appar ent contact angle measurements. The morphology was obtained by atomic force microscopy. The results
demonstrated that the molar mass of paraffin has a direct influence on the wettability of the surfaces by
surfactant solutions. The rise in paraffin molar mass promoted a reduction of the contact angle between
solid–liquid interfaces due to the formation of surfaces with less roughness. An increase in the ethoxy lation degree of surfactants reduced the wettability, showing a tendency toward water behavior. It was
observed thatthe melted paraffin crystallized more abruptly due to having a higher melting temperature,
which impedes crystal formation and, consequently, decreases its roughness | |
| dc.description | Wettability is a widely used property in many industrial applications. This study aimed at determining
the wettability of long-chain paraffin surfaces by nonionic surfactants, nonylphenol polyethoxylates with
different ethoxylation degrees. Interactions between solid and liquid phases were determined by appar ent contact angle measurements. The morphology was obtained by atomic force microscopy. The results
demonstrated that the molar mass of paraffin has a direct influence on the wettability of the surfaces by
surfactant solutions. The rise in paraffin molar mass promoted a reduction of the contact angle between
solid–liquid interfaces due to the formation of surfaces with less roughness. An increase in the ethoxy lation degree of surfactants reduced the wettability, showing a tendency toward water behavior. It was
observed thatthe melted paraffin crystallized more abruptly due to having a higher melting temperature,
which impedes crystal formation and, consequently, decreases its roughness | |
| dc.language | en | |
| dc.publisher | ELSEVIER | |
| dc.subject | Wettability | |
| dc.subject | Contact angle | |
| dc.subject | Nonionic surfactant | |
| dc.subject | Paraffin | |
| dc.subject | Critical micelle concentration | |
| dc.title | Wettability of paraffin surfaces by nonionic surfactants: evaluation of surface roughness and nonylphenol ethoxylation degree | |
| dc.type | article | |
