Abstract
The distribution of lap-shear strength (σ) developed at self-healed interfaces between the contacting thick (bulk) films of amorphous polystyrene (PS) and/or poly(methyl methacrylate) (PMMA) at healing temperatures (T) in the surroundings or well below the bulk glass transition temperature (T g bulk), down to T = T g bulk − 60 K, as a result of a long-term (for 24 h) contact, has been analysed in the frameworks of the Weibull statistical model. The Weibull modulus (m) and the scale parameter (σ 0) have been estimated over a broad interval of T, from 54 to 104°C, at both compatible PS−PS and PMMA−PMMA and incompatible PS−PMMA interfaces. The variations in m and σ 0 with T have been discussed and compared with those reported earlier for a short-term 1-h contact.
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