Biomedical Engineering Reference
In-Depth Information
9.2
Weight loss (% of SHMPE) (curve 1) and differential thermal assay
(curve 2) via thermo-oxidative destruction of the SHMPE. Heating rate is
3.2
8
C/min [19].
9.3
Weight loss (% of binder) (curve 1) and differential thermal assay
(curve 2) of SHMPE + Y
1
Ba
2
Cu
3
O
6.97
. SHMP:Y
1
Ba
2
Cu
3
O
6.97
= 20:80 (in
mass ratio of the monomer). Heating rate is 3.2
8
C/min [19].
The addition of NG-2246 as an antioxidant decreases the rate of thermo-
oxidative processes occurring in the matrix, thus increasing the initiation
temperature of binder destruction up to 235
8
C. These results fully support
the assumption made above, and correlate well with observed peculiarities in
the SC characteristics of PMMA-ceramic composites. Composites based on
styrene with methyl methacrylate (Table 9.3) are similarly effective in the
presence of NG-2246 antioxidant.
9.3.3 Polymerization of methyl methacrylate in the presence
of Y
1
Ba
2
Cu
3
O
7
x
ceramics
For composites obtained by the polymerization of methyl methacrylate
(MMA) in pressed samples of Y
1
Ba
2
Cu
3
O
7
x
ceramic, the measurement of
