%0 Journal Article
%A Wang, Meng Wei
%A Jeng, Ru Jong
%A Lin, Ching Hsuan
%D 2015
%T Study on the Ring-Opening Polymerization of Benzoxazine
through Multisubstituted Polybenzoxazine Precursors
%U https://acs.figshare.com/articles/journal_contribution/Study_on_the_Ring_Opening_Polymerization_of_Benzoxazine_through_Multisubstituted_Polybenzoxazine_Precursors/2198389
%R 10.1021/ma502336j.s001
%2 https://acs.figshare.com/ndownloader/files/3832720
%K Multisubstituted Polybenzoxazine PrecursorsTo
%K PBz
%K ortho positions
%K DSC
%K ROP
%K ortho position
%K IR
%K precursor
%K para position
%K polybenzoxazine
%X To
discuss the mechanism of ring-opening polymerization (ROP) of
benzoxazine, a bisphenol A/diaminodiphenylmethane-based polybenzoxazine
precursor (PBz-0M), o-dimethylbisphenol A/diaminodiphenylmethane-based
polybenzoxazine precursor (PBz-2M), and o-dimethylbisphenol
A/o-tetramethyldiaminodiphenylmethane-based polybenzoxazine
precursor (PBz-6M) were prepared. Among the polybenzoxazine precursors,
free ortho positions to the O of oxazine are available for PBz-0M.
No free ortho or para position to the O of oxazine is available for
PBz-2M, but free ortho position to the N of oxazine is available.
No free ortho positions to the O or N of oxazine are available for
PBz-6M. According to DSC, IR, and thermal analysis, we found that
the ROP of PBz-2M can be carried out even though no free ortho or
para position to the O of oxazine is available. We conclude that the
ROP is carried out through the ortho position to the N of oxazine
and propose a reaction mechanism to explain the polymerization.
%I ACS Publications