Min-chin Su, Jin‐Long Hong
Sep 24, 2001
Citations
0
Influential Citations
5
Citations
Journal
Synthetic Metals
Abstract
Abstract Ionic polymer prepared from acid–base interaction between methanesulfonic acid (MSA) and poly(4-vinylpyridine) (P4VP) or poly(styrene- co -4-vinylpyridine) (PS-P4VP) was served as dispersant for the emulsion polymerization of aniline. Dependent on the dispersants (as P4VP(MSA) or PS-P4VP(MSA)) used, the maximum amounts of polyaniline incorporated without premature precipitation during polymerization are different. A 3 wt.% of aniline in relative to P4VP(MSA) dispersant resulted in precipitation during polymerization; however, the aniline/PS-P4VP(MSA) ratio can reach 10 wt.% without the undesired precipitation if PS-P4VP(MSA) was used as dispersant. The inner PS block in PS-P4VP(MSA) can serve as a stabilizer to prevent the expansion of the outer P4VP(MSA) block and provided a more stable micelle system as compared with the aniline/P4VP(MSA) system. Spherical particles of different sizes were observed in products of low polyaniline contents (