The Mechanical Properties of a Poly(methyl methacrylate) Denture Base Material Modified with Dimethyl Itaconate and Di-n-butyl Itaconate

Table 2

Storage modulus (), loss modulus () and damping factor () at 37°C, maximal value for damping factor (), and glass transition temperatures obtained by DSC () and DMTA () measurements for PMMA denture base materials modified with DMI and DBI.

Sample	, GPa	, MPa			, °C	, °C
PMMA	4.03	359	0.089	1.31	123.2	141.5
2.5 DMI	3.99	375	0.094	1.34	122.5	139.1
5.0 DMI	3.83	440	0.115	1.46	121.1	136.2
7.5 DMI	3.65	464	0.127	1.52	119.7	134.5
10 DMI	3.41	481	0.141	1.65	117.5	133.5
2.5 DBI	3.86	417	0.108	1.41	111.0	127.9
5.0 DBI	3.71	460	0.124	1.53	106.4	123.7
7.5 DBI	3.47	475	0.137	1.63	103.8	117.3
10 DBI	3.13	513	0.164	1.81	93.4	107.4