К вопросу о механизме разрушения симметричной границы раздела аморфного полиметилметакрилата, самозалеченной при температуре ниже температуры стеклования объёма
Abstract
Attenuated total reflection Fourier-transformed infrared spectroscopy (ATR-FTIR) has been used for the elucidation of the fracture molecular mechanism of the polymer-polymer interfaces self-healed partially at a temperature ( T ) well below the bulk glass transition temperature ( Tgbulk). For this purpose, the symmetric interface of a carbon-chain polymer such as poly(methyl methacrylate) (PMMA) has been used. It has been found that both the integral intensity and the half-width of the band ν = 1725 cm-1 for the fractured PMMA-PMMA interface self-healed at T = 64оС ( T = Tgbulk - 45оС) are higher as compared to those for the original PMMA surface and for the non-contacted PMMA surface annealed at T = Tgbulk - 45оС. Those differences has been assigned to the chain scission of the interdiffused PMMA chains providing the creation of new chain ends and their following oxidation in the air atmosphere.
About the Authors
Ю. Бойко
Физико-технический институт им. А.Ф. Иоффе Российской академии наук
Russian Federation
Russian Federation
Р. Мамалимов
Физико-технический институт им. А.Ф. Иоффе Российской академии наук
Russian Federation
Russian Federation
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