Control of wettability of polymers by surface roughness modification

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Show simple item record Encinas García, Noemí Pantoja Ruiz, Mariola Abenojar Buendía, Juana Martínez Casanova, Miguel Ángel 2016-05-17T11:00:23Z 2016-05-17T11:00:23Z 2010-09
dc.identifier.bibliographicCitation Journal of adhesion science and technology, vol. 24, issue 11-12, 2010, pp. 1869-1883
dc.identifier.issn 0169-4243
dc.description.abstract Most polymeric materials, particularly polyolefins and their derivatives, present a low surface energy which is the cause of their poor wettability and limits processes such as adhesive bonding, painting, or metalizing. Many methods have been developed and used to modify polymer surfaces for improved wetting, including mechanical treatments, wet-chemical treatments with strong acids or bases, and exposure to flames or corona discharge.In this paper the improvement of wetting properties of several polymeric materials widely used in the automotive industry, such as high density polyethylene (HDPE), low density polyethylene (LDPE), polypropylene (PP) and silicone, is studied by means of surface mechanical abrasion using sandpapers of different grain sizes (1000, 180 and 80). Measurements of the surface roughness are performed using a Hommel Tester T8000 device equipped with a diamond stylus, which provides data on the arithmetic average roughness Ra parameter and Abbott-Firestone curve. Variations in the polymers surface energy (SE) are estimated through contact angle measurements using five test liquids of different polarities. Both components of the SE, dispersion (σD ) and polar (σP), as well as total (σT) at different conditions of treatment are analyzed using the Owens-Wendt-Rabel-Kaelble (OWRK) method. Morphological changes induced in the surface are analyzed by Scanning Electron Microscopy (SEM). Additionally, measurements of the static friction coefficient (μs) are carried out by the standard method ASTM D 1894-08. A slight enhancement in surface wettability is found with the mechanical abrasion pre-treatment from the SE increase. Finally, a higher value of μs is achieved for the abraded specimens as the normal force acting onto the system is increased.
dc.description.sponsorship Financial support from the Fundación Universidad Carlos III de Madrid and Instituto Tecnológico de Química y Materiales “Álvaro Alonso Barba” is acknowledged.
dc.format.extent 15
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher Taylor & Francis
dc.rights © Koninklijke Brill NV, Leiden, 2010
dc.subject.other Polymer surface abrasion
dc.subject.other Roughness
dc.subject.other Contact angle
dc.subject.other Wettability
dc.subject.other Surface energy
dc.title Control of wettability of polymers by surface roughness modification
dc.type article
dc.subject.eciencia Materiales
dc.identifier.doi 10.1163/016942410X511042
dc.rights.accessRights openAccess
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 1869
dc.identifier.publicationissue 11-12
dc.identifier.publicationlastpage 1883
dc.identifier.publicationtitle Journal of adhesion science and technology
dc.identifier.publicationvolume 24
dc.identifier.uxxi AR/0000007897
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