Adhesion Using Molecular Models. Adhesion of Polyethylene and Poly(vinyl Chloride) to Metals

Taylor, Dean; Rutzler, John E.

doi:10.1021/ie50582a041

Cited by 37 publications

(2 citation statements)

References 12 publications

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“…Grit-blasting is a well-established and widely-used stage in the pretreatment of metal surfaces. Despite sporadically investigation over many decades, no general view has emerged of how the characteristics of the surface influence the adhesion [41,42]. In a recent investigation, Amada et al [43,44] grit blast a steel substrate, varying the angle between the gun and the specimen surface, and measured the adhesion of a plasma-sprayed alumina coating.…”

Section: Fractal Resultsmentioning

confidence: 99%

Surface energy, surface topography and adhesion

Packham

2003

International Journal of Adhesion and Adhesives

478

168

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In this paper are discussed some of the fundamental principles which are relevant to an understanding of the influence that interfacial roughness may have on adhesion. The surface energies of the adhesive, substrate and of the interface between them determine the extent of wetting or spreading at equilibrium. Numerical values for surface energies may be obtained either from contact angle measurements or from analysing force-displacement curves obtained from the surface forces apparatus. The extent to which the relationships, appropriate for plane surfaces, may be modified to take into account interfacial roughness are discussed. For modest extents of roughness, the application of a simple roughness factor may be satisfactory, but this is unrealistic for many of the practical surfaces of relevance to adhesive technology which are very rough, and is ultimately meaningless, if the surface is fractal in nature. Some examples are discussed of published work involving polymer-metal and polymer-polymer adhesion, where the roughness of the interface exerts a significant influence on the adhesion obtained. Roughness over a range of scales from microns to nanometres may strengthen an interface, increasing fracture energy by allowing bulk energy dissipating processes to be activated when the bond is stressed.

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Section: Fractal Resultsmentioning

confidence: 99%

Surface energy, surface topography and adhesion

Packham

2003

International Journal of Adhesion and Adhesives

478

168

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“…ttPAN-copper complexes developed the blue color characteristic of Cupolyelectrolyte complexes (Wall and Gill, 1954). Complexing of these metals may also have increased the polarity of the C-H group in the HPAN molecule leading to adsorption by an ion-dipole mechanism (C--H + 9 9 9 0-) (Bradley, 1945;Taylor and Rutzler, 1958). Solutions of sodium salts of anions not extensively adsorbed by clay (CI-, CH3CO0-, Fe(CN)64-, SOa 2-) had little effect on adsorption of I-IPAN.…”

Section: Normality Of Solution Electrolytementioning

confidence: 99%

Adsorption of Hydrolyzed Polyacrylonitrile on Kaolinite

Mortensen

1960

Clays clay miner. (Natl. Conf. Clays Clay Miner.)

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Adsorption experiments were conducted by mixing homoionic kaolinite and C14-1abeled hydrolyzed polyacrylonitrile (HPAN) in water and solutions oi electrolytes. Langmuir type adsorption isotherms resulted. Exchange cations on kaolinite increased adsorption in approximately the same order as such cations reduce zeta potential, i.e. Th 4+ :>Ca ~+ ~Ba ~+ ~H + ~NH4+ ~K § ~Na +. The anomalous increase in adsorption in the presence of polyvalent exchange cations suggested adsorption at the site of base exchange salt formation. Sorbed anions increased adsorption of HPAN in the order of electronegativity, i.e. F-~OH-~H2PO ~ ~C1-~CHaCO0-~NOT-An increase in the concentration oi electrolyte and acidity of the adsorbate medium increased adsorption of HPAN. This effect was apparently due to the reduction of electrostatic repulsion between HPAN and kaolinite and a reduction in size of the polymer coil. Divalent cations, especially the transition metals capable of being complexed by HPAN, were more effective than univalent cations. Dissolution of the clay lattice caused desorption of HPAN. HPAN adsorption reduced the intensity of the OH and O-A1-OH bands in infrared absorption spectra of the kaolinite. Preadsorption of aurintricarboxylic acid blocked adsorption of HPAN, suggesting that "positive spots" due to exposed lattice aluminum on edges of the clay platelets were adsorption sites.

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Tailoring of Interface/Interphase to Promote Metal‐Polymer Adhesion

Friedrich

2014

Adhesion in Microelectronics

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Adhesion Using Molecular Models. Adhesion of Polyethylene and Poly(vinyl Chloride) to Metals

Cited by 37 publications

References 12 publications

Surface energy, surface topography and adhesion

Surface energy, surface topography and adhesion

Adsorption of Hydrolyzed Polyacrylonitrile on Kaolinite

Tailoring of Interface/Interphase to Promote Metal‐Polymer Adhesion

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