| Abstract: | Acrylic copolymer systems consisting of methyl methacrylate and triethylene glycol dimethacrylate with different chemical compositions were synthesized through bulk polymerization using N,N‐dimethyl‐p‐toluidine as an acelerator to obtain nonshrinkable polymers. The use of the tertiary amine on this formulation produces an increase on the volume of the material due to a phase separation in the copolymer, which compensates the volume reduction upon curing. The specific volumes of all materials were determined by volume dilatometry using a dilatometer specially constructed for this purpose. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 78: 586–591, 2000 |
