JavaScript is disabled for your browser. Some features of this site may not work without it.
Mechanical properties of a hydrophilic acrylic polymer
O'Brien, William Joseph; Hermann, J.; Shepherd, T. H.
O'Brien, William Joseph; Hermann, J.; Shepherd, T. H.
1972-03
Citation:O'Brien, W. J.; Hermann, J.; Shepherd, T. H. (1972)."Mechanical properties of a hydrophilic acrylic polymer." Journal of Biomedical Materials Research 6(2): 15-24. <http://hdl.handle.net/2027.42/37990>
Abstract: Acrylic polymers with hydrophilic groups (i.e., ethyl hydroxyl) may be prepared that convert to a soft elastic gel by absorbing water. Such a polymer has been applied to dentistry for use as an elastic lining material for dentures. A commercial product, Hydron, was used in this study. The linear expansion of this material after 520 hr of water immersion was found to be 20.4%. Hardness was found to decrease from 15.7 KHN for the dry polymer to 1.5 KHN at 19% absorbed water content. The swelling pressure was measured and found to reach a maximum value of 157 psi after 204 hr of water immersion. The Young's modulus was found to decrease from a value of 295,300 psi to 290 psi with 19% absorbed water content. Values were determined on intermediate water contents for the properties studied.
