Lite Version|Standard version

To gain access to this content please
Log in via your home Institution.
Log in with your member or subscriber username and password.
Download

Two series of functional copolymer microparticles were simply synthesized via an oxidative polymerization of o- and m-chloroanilines (OC and MC) and aniline (AN) in HCl aqueous medium, for a detailed comparison between OC/AN and MC/AN copolymers. The polymerization characteristics, structures, and properties of the copolymers were systematically studied by gel permeation chromatographic, IR and UV-visible spectroscopic, wide-angle X-ray diffractive, and thermogravimetric techniques. The results showed that a small amount of AN can efficiently activate the oxidative polymerization of MC monomer although MC monomer can not homopolymerize oxidatively. A non-linear variation of the polymerization effect, molecular weight, and properties of the copolymers with the comonomer ratio suggests that the OC/AN and MC/AN polymers formed are genuine copolymers rather than a mixture of the corresponding homopolymers. The resultant copolymers show a remarkably enhanced solubility, a colorful solvatochromism and an improved processibility in comparison with polyaniline. The OC/AN copolymers demonstrate a faster polymerization rate, narrower molecular weight distribution, and higher conductivity, but have a lower polymerization yield, molecular weight, thermostability, and air-separation capability than the MC/AN copolymers.

Graphical abstract: Synthesis and properties of processible copolymer microparticles from chloroanilines and aniline

Page: ^ Top