The dynamics of aqueous polyacrylic acid solution confined in Dental Cements: From jump diffusion to multiple-state diffusion processes
In typical odontological studies water sorption in the restoration material is determined by weighting a freshly mixed cement at regular intervals. These findings were attributed to conformational changes in hydrophilic segments of the polymer on absorption of aqueous sodium chloride. It is considered that in this scenario the molecules form more compact coils than in the presence of pure water. To improve such evaluation process, to compare different bulk liquids and, at the same time, to develop new materials to be used in dental treatment, insight on the chemical reaction dynamics between the bulk liquid and the glass-silicate particles used in dentistry is important. Such information is usually hard to determine accurately and non-destructively. Here we propose to use QENS to understand how the dynamics of the bulk liquid used in the hydration process in dental cement in order to understand haw it is modified when confined and relate the results to durability.
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M. C. Berg; NUNES BORDALLO Heloisa; SEYDEL Tilo and Mark T F Telling. (2016). The dynamics of aqueous polyacrylic acid solution confined in Dental Cements: From jump diffusion to multiple-state diffusion processes. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-12-483
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