1. Home page
  2. Search

Water sorption and water-induced molecular mobility in dental composite resins

This item is provided by the institution :
National Technical University of Athens   

Repository :
Digital Library of National Technical University of Athens | Dspace@NTUA   

see the original item page
in the repository's web site and access all digital files if the item*



Water sorption and water-induced molecular mobility in dental composite resins (EN)
Lagouvardos, PE (EN)
Kyritsis, A (EN)
Daoukaki, D (EN)
Pissis, P (EN)
journalArticle (EN)
2014-03-01T01:19:41Z
2003 (EN)
Water sorption in two resin composites, Kulzer's Solitaire (S) and SDI's Wave (W), and in a polyacid-modified composite resin, 3M's F2000 (compomer F), was investigated by means of equilibrium sorption isotherms (ESI) and of dynamic sorption (DS) measurements. Molecular mobility in these materials was studied by means of dielectric relaxation spectroscopy (DRS) and of thermally stimulated depolarization currents (TSDC) measurements. The results of ESI measurements show that at equilibrium, water is molecularly distributed in the materials and the effects of hydrophilic sites and clustering are negligible. Hysteresis effects in sorption-desorption cycles are larger in the resin composites than in the compomer. Equilibrium water uptakes in both ESI and DS conditions are rather low, in the range 1-2%. Diffusion coefficients of water are about 1 × 10-8 cm2/s in the resin composites and by a factor of about 2 smaller in the compomer. Molecular mobility increases with hydration, as suggested by preliminary DRS and TSDC measurements. Detailed dielectric measurements may give important information for understanding, at the molecular level, water-induced degradation in dental materials. © 2003 Kluwer Academic Publishers. (EN)
Engineering, Biomedical (EN)
Materials Science, Biomaterials (EN)
isotherm (EN)
water absorption (EN)
Sorption Isotherm (EN)
Diffusion Coefficient (EN)
Water Uptake (EN)
measurement (EN)
hysteresis (EN)
Composite Resin (EN)
Diffusion in liquids (EN)
spectroscopy (EN)
Resin Composite (EN)
priority journal (EN)
Resins (EN)
compomer (EN)
Dielectric Relaxation (EN)
diffusion coefficient (EN)
hydrophilicity (EN)
Hydration (EN)
biomedical and dental materials (EN)
water transport (EN)
Dental Material (EN)
Dynamic sorption (DS) (EN)
molecular dynamics (EN)
water (EN)
article (EN)
Sorption (EN)
Composite materials (EN)
resin (EN)
hydration (EN)
depolarization (EN)
desorption (EN)
equilibrium constant (EN)
water flow (EN)
Journal of Materials Science: Materials in Medicine (EN)
English
KLUWER ACADEMIC PUBL (EN)
National Technical University of Athens
Digital Library of National Technical University of Athens | Dspace@NTUA
Κεντρική Βιβλιοθήκη Ε.Μ.Π.
Ιδρυματικό Αποθετήριο
Δημοσιεύσεις μελών Δ.Ε.Π. σε περιοδικά



*Institutions are responsible for keeping their URLs functional (digital file, item page in repository site)