In
this work, we prepared different initiator solutions containing
ether and AlCl
3
by changing the addition sequence of ingredients,
studied the interactions between ether and AlCl
3
from the
evolution of the Fourier transform infrared (FTIR) spectra by comparison,
and investigated the catalytic performances of AlCl
3
affected
by ether for isobutylene polymerization. We observed that different
preparation methods of initiator solutions could lead to two kinds
of interactions between ether and H
2
O/AlCl
3
in
hexane. The strong interaction could stabilize carbenium ions and
seriously decrease the catalytic performance, whereas the weak interaction
could promote isomerization and proton elimination. Moreover, we found
that the preparation method of initiator solutions was not a critical
factor in CH
2
Cl
2
. Finally, a universal mechanism
based on the AlCl
3
-involved interactions in different solvents
was proposed to understand the effects of ether on the cationic polymerization
catalyzed by AlCl
3
thoroughly.
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