What is it about?
Hydrogen dynamics in a time range from hundreds of femtoseconds (fs) to nanoseconds (ns) can be directly analyzed using neutron spectroscopy, where information on the inelastic and quasi-elastic scattering, hereafter INS and QENS, can be obtained. In this study, we applied these techniques to understand how the nanoscale mobility of the aqueous solution of polyacrylic acid (PAA) used in conventional Glass Ionomer Cements (GIC) changes under confinement.
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Why is it important?
Dental restoration takes one of the most significant shares in the health care cost in industrialised countries. Consequently, developing and improving dental restorative materials is an important matter.Here we show how neutron scattering can help.
Perspectives
Taken together, our results suggest that accurate and deep understanding of polymer-water binding, polymer crosslinking as well as material density changes occurring during the maturation process of GIC are necessary for development of advanced dental restorative materials.
Professor Heloisa Bordallo
University of Copenhagen
Read the Original
This page is a summary of: Nanoscale Mobility of Aqueous Polyacrylic Acid in Dental Restorative Cements, ACS Applied Materials & Interfaces, March 2018, American Chemical Society (ACS),
DOI: 10.1021/acsami.7b15735.
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