Biomedical Engineering Reference
In-Depth Information
9.5
Influence of added Y
1
Ba
2
Cu
3
O
7
x
on the kinetics of polymerization
of MMA under the impact of 3
10
2
m
l
1
at 60
C. Y
1
Ba
2
Cu
3
O
7
x
content (in g): 0 (curve 1); 0.1 (curve 2); 0.2 (curve 3); 0.3 (curve 4) [19].
6
6
8
9.6
Influence of the added Y
1
Ba
2
Cu
3
O
7
x
on the kinetics of
polymerization of MMA without initiator at 60
8
C (a) and the dependence
of
on added ceramic (b). Y
1
Ba
2
Cu
3
O
7
x
content (in g): 0 (curve 1), 0.1
(curve 2); 0.2 (curve 3); 0.3 (curve 4); 0.5 (curve 5); 0.7 (curve 6); 1 (curve
7); 3.8 (curve 8). Concentration of AIBN is 3
Q
10
2
m·l
1
without ceramic
6
[19].
Fig. 9.6(a), the rate of polymerization somehow increases non-convention-
ally. For this particular case (i.e. addition of the ceramic) a considerable
increase in the rate of polymerization at the initial stages of the process takes
place and a corresponding decrease in the gel effect in the later stages of
conversion is noted. These indicated anomalies become conspicuous when
the amount of ceramic added is increased in the initial reaction mixture.
