Kinetics of steady-state wetting

Ström, Gōran; Fredriksson, Monica; Stenius, Per; Radoev, B.

doi:10.1016/0021-9797(90)90256-n

Cited by 70 publications

(42 citation statements)

References 33 publications

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“…The drop was illuminated from one side, and the camera from the opposite side captured the image of the drop. The image was then transferred to the computer and contact angle was determined with the software referring to distilled water as the substance liquid according to YoungLaplace method [15]:…”

Section: Contact Angle Measurementmentioning

confidence: 99%

Could readily silanized silica particles substitute silica coating and silanization in conditioning zirconium dioxide for resin adhesion?

Özcan

Yetkiner

2015

Journal of Adhesion Science and Technology

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Particle deposition with silica-coated alumina followed by silane application increase the physico-chemical interaction between the resin cement and zirconia.Unfortunately, due to hydrolytic degradation of the silane, achieved adhesion decreases after aging conditions. Recently, readily silanized silica particles became available, that eliminates silanization procedures. This study investigated the effect of particle types with different morphology and surface properties on the surface wettability and adhesion of resin cement to zirconia after aging. Zirconia specimens (5x5x1 mm 3 ) (Emax ZirCAD, Ivoclar)were wet polished to 1200 grit silicone carbide abrasive and ultrasonically cleaned.Specimens were randomly assigned to one of the following surface conditioning protocols Failure types were exclusively adhesive in all groups. Weibull distribution presented lower 3 shape ( 0 ) for AL (7.7) and SIL (5.3) and the highest for SILP (10.8). Silane coated silica particles (SilJet Plus) presented better wettability on zirconia than with alumina or alumina particles coated with silica and provided similar bond strength on zirconia obtained with silica coated and silanized surfaces. Since no silane application is needed with readily silanized silica particles, it may be used as a substitute for conventional silica coating and silanization, reducing the clinical procedures.

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Section: Contact Angle Measurementmentioning

confidence: 99%

Could readily silanized silica particles substitute silica coating and silanization in conditioning zirconium dioxide for resin adhesion?

Özcan

Yetkiner

2015

Journal of Adhesion Science and Technology

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“…The contact angle is measured by placing the droplet on the surface of the polymer using the integrated dispenser system; the angle which this drop makes with the surface is then measured using the associated high resolution camera and computer software. The liquid drop properties are extracted using the Strom et al [17,18] technique. In order to determine the surface energy it is necessary to dispense three liquids of different polarities.…”

Section: Characterisationmentioning

confidence: 99%

Atmospheric pressure plasma treatment of amorphous polyethylene terephthalate for enhanced heatsealing properties

Dowling

Tynan

Ward³

et al. 2012

International Journal of Adhesion and Adhesives

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An atmospheric pressure plasma system has been used to treat amorphous polyethylene terephthalate (APET) to enhance its healseal properties to a polyethylene terephthalate (PET) film. The plasma treated APET sheet material was thermoformed into trays for use in the food packaging industry and heatsealed to a PET film. The heatsealing properties of the resulting package were assessed using the burst test technique. It was found that the plasma treatment significantly enhanced the adhesive properties and an increase in burst pressure from 18 to 35 kPa was observed for plasma treated food trays. The APET surface chemistry was assessed after plasma treatment where it was found that the plasma treatment had affected an increase in oxygen and an addition of nitrogen species to the polymer surface. The surface roughness (R a ) of the plasma treated samples was also observed to increase from 0.4 to 0.9 nm after plasma treatment. IntroductionHeatsealed polymer trays are widely used for packaging food products, particularly meat and fish [1]. In the heat sealing process a polymer top film is applied to the polymer tray under elevated temperature and pressure in order to enclose the food product in an airtight environment [2]. The conventional method for creating a strong bond between a food tray and a top film is to use a co-extruded heatseal layer ( Figure 1).

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“…The drop was illuminated from one side and the camera from the opposite side captured the image of the drop. The image was then transferred to the computer and the contact angle was determined using the software using the Young-Laplace method [12]:…”

Section: Surface Roughness Measurementmentioning

confidence: 99%

Analysis of structural, morphological alterations, wettability characteristics and adhesion to enamel after various surface conditioning methods

Özcan

Sadiku

2016

Journal of Adhesion Science and Technology

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Minimal invasive dental reconstructions and orthodontic appliances are bonded to enamel without removing the enamel with rotating instruments but the top layer of enamel may be partially aprismatic and impair adhesion. The objectives of this study were to investigate the effect of mechanical surface conditioning methods for removing enamel on its structural, morphological alterations, wettability characteristics and adhesion of resin based cement to the conditioned surfaces. Maxillary human incisors (N=40, n quadrant =160) were obtained and coronal sections were embedded in acrylic with their labial surfaces exposed.The teeth were randomly divided into 4 groups and the enamel surface of each tooth was divided into 4 quadrants. The surfaces were conditioned in a clockwise manner by one of the following methods: 1) Non-conditioned enamel acted as the control group (C); 2) Silicone coated disc (Sof-Lex disc, Black, 3M ESPE) (SD); 3) Diamond bur at slow speed (DB) and 4) Air-borne particle abrasion (50 µm Al 2 O 3 , 2 bar, 5 s) (AA). Surface roughness was measured at each quadrant using a non-contact digital profilometer and contact angle measurements were performed using a goniometer. Enamel surfaces were then etched with 37% H 3 PO 4 for 60 s and roughness and wettability measurements were repeated. The enamel surfaces in each quadrant received resin composite luting cement (Variolink II, Ivoclar Vivadent) incrementally in a polyethylene mould (diameter: 1 mm 2 ; height: 4 mm) and photopolymerized. The specimens were stored in distilled water for 24 hours at 37ºC until the testing procedures and then shear force was applied to the adhesive interface until failure occurred in a Universal Testing Machine (0.5 mm/min). Microshear bond (µSBS) was calculated by dividing the maximum load (N) by the bonding surface area of the resin cement.Representative enamel surfaces were analyzed under the scanning electron microscope (SEM) (x5000) to assess the surface morphology. Failure types were analyzed using optical microscope and SEM. Data (MPa) were analyzed using one-way ANOVA

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Kinetics of steady-state wetting

Cited by 70 publications

References 33 publications

Could readily silanized silica particles substitute silica coating and silanization in conditioning zirconium dioxide for resin adhesion?

Could readily silanized silica particles substitute silica coating and silanization in conditioning zirconium dioxide for resin adhesion?

Atmospheric pressure plasma treatment of amorphous polyethylene terephthalate for enhanced heatsealing properties

Analysis of structural, morphological alterations, wettability characteristics and adhesion to enamel after various surface conditioning methods

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