Abstract
Fracture energy (G) of the symmetric amorphous polystyrene (PS)–PS interfaces that were partially healed at temperatures (T) below the glass transition temperature of the bulk (\( T_{\text{g}}^{\text{bulk}} \)) has been measured at ambient temperature and compared with those reported in the literature (G 0) for the symmetric PS–PS interfaces that were fully healed at T > \( T_{\text{g}}^{\text{bulk}} \). It has been shown that G developed at T < \( T_{\text{g}}^{\text{bulk}} \) corresponds to G 0 for the polymers having the molecular weight larger than the entanglement molecular weight. This behaviour indicates that topological entanglements can be formed across the contact zone of the polymers with glassy bulk via the interdiffusion of the chain segments located in the viscoelastic contact layer.
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Boiko, Y.M. On the formation of topological entanglements during the contact of glassy polymers. Colloid Polym Sci 290, 1201–1206 (2012). https://doi.org/10.1007/s00396-012-2675-1
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DOI: https://doi.org/10.1007/s00396-012-2675-1