ISSN:
0142-2421
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Physics
Notes:
The surface composition of various ceramic substrates used for electronics applications is heterogeneous. In the case of debased alumina, this may result from the diffusion of sintering aids such as silica, added during the manufacturing process, which produce a complex bonding surface. In this study, the durability of a visible light curing resin applied to a variety of ceramic substrates of differing acidity/basicity was investigated. Butt-joints consisting of photocured resin adhered to quartz, silicon wafers and polished alumina were produced. Following immersion in water at 50°C for periods of several weeks, joints were fractured (in situ in the VG ESCALAB Mk II and just prior to loading into the Scienta ESCA300). Angle-resolved XPS analysis was carried out on both sides of the failure. Failure occurred cohesively, with 1-2 nm of polymer remaining on the ceramic side of the failure. Orientation of the oxygenated functional groups of the polymer was observed within this overlayer, with methoxy groups being aggregated immediately adjacent to the inorganic surface; subtle differences were observed between the polished alumina and other substrates. An absence of the aromatic groups from the photocured polymer was also noted on the ceramic side of the failure. These results are explained in terms of acid-base interactions, and a model for adhesion and subsequent failure of the system is proposed.
Additional Material:
5 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/sia.740211004
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