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The results of a series of scratch measurements are reported for a number of methyl alcohol (methanol) plasticized poly(methylmethacrylate) (PMMA) surfaces to investigate the deformation mechanism and solvent diffusion characteristics when a PMMA is exposed, to various extents, in a methanol environment. The study confirms that the solvent diffusion in this system occurs by the Case II diffusion...
The paper describes an experimental study of the normal and scratch hardnesses of a poly(methylmethacrylate). The deformations have been introduced using hard steel cones of a range of included cone angles. The influence of the state of interfacial lubrication is examined and rationalized. The observed time dependence of the two types of computed hardness data is compared and the nature of the...
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