Chemistry Reference
In-Depth Information
Figure 3.
Effect of the feed molar composition on the gel content,
!
: St/AA
¼
0.5;
~
: St/AA
¼
1, AA: 6 wt%.
gel content increases with increasing DCP
concentration. This was expected when the
DCP concentration was higher.
crosslinking reactions and the MFR of
LDPE-g-(AA-St) tails off. When the
DCP concentration was about 0.3 wt%,
the value of R
a
reaches a maximum of 0.62.
But the severe crosslinking reaction
decreases the MFR. Intuitively, this was
what should be expected as mass transfer
became limited by the viscosity increase at
high peroxide concentrations and grafting
reactions gave way to crosslinking and
Effect of DCP Concentration on MFR and
R
a
of LDPE-
g
-(AA-St)
Figure 4 shows the effect of the DCP
concentration on the MFR and
R
a
under
equimolar feed composition. Increasing the
concentration of the initiator leads to more
Figure 4.
Effect of DCP concentration on the MFR and
R
a
of LDPE-
g
-(AA-St), AA: 6 wt%.
