Sf. Zawadzki et al., CROSS-LINKING DENSITY, THERMAL AND MECHANICAL-BEHAVIOR IN PMMA NETWORKS, International journal of polymeric materials, 33(1-2), 1996, pp. 31-36
Poly(methyl methacrylate-co-ethyleneglycol dimethacrylate) networks we
re synthesized with systematic variation in crosslinking density. The
molecular weight between crosslinks ((M) over bar(c)) was determined b
y equilibrium swelling measurements. The glass transition temperature
was used to evaluate the effect of curing time and the degree of cross
linking on the networks. Flexural strength and impact resistance decre
ased with increasing (M) over bar(c).