Table 4.

Decreased PMMA exothermic reaction with nano MgO (ΔT °C compared to time after curing of PMMA alone)

Sample	1 sec	1 min	2 min	10 min	1hr 47 min
PMMA + 10 wt% conventional MgO	−1.65 °C**	−1.96 °C**	−1.81 °C**	−1.50 °C**	−0.45 °C**
PMMA + 10 wt% nanophase MgO	−5.31 °C*,**	−5.46 °C*,**	−4.01 °C*,**	−3.65 °C*,**	−2.95 °C*,**
PMMA + 10 wt% conventional BaSO4	0 °C	−0.60 °C	−0.45 °C	−0.15 °C	−0.15 °C
PMMA + 10 wt% nanophase BaSO4	−0.15 °C*	−1.20 °C*,**	−1.05 °C*,**	−0.30 °C*	−0.15 °C

^*Notes: p < 0.01 (compared with respective conventional additive) and

^**p < 0.01 (compared with PMMA alone).

Abbreviation: PMMA, poly(methyl methacrylate).