Synthesis and Properties of Conducting Polymer Blends

Blends of Polychloroprene; [PCR] and polyaniline dodecylbenzenesulfonate [PAni.DBSA]۱ with electrical conductivities up to ۴.۸×۱۰-۱۱ S cm-۱, have been prepared by solution mixing and casting. The solubility parameter was calculated, and the most suitable solvent (tetrahydrofuran)۲ was selected for the solubility; the most compatible polymer Polychloroprene [PCR] was selected for blending. Blending of polyaniline dodecylbenzenesulfonate (PAni.DBSA) with PCR was carried out via solution mixing. Optical micrographs of blends prepared from Polychloroprene showed the lowest levels of phase separation. The FT-IR spectra of PCR-PAni.DBSA blends looked like an overlap of the spectra of the pure materials, but with significant peak shifts due to changing intermolecular interactions between the polymers. Under DSC analysis, thermal events for blends prepared with PCR-PAni.DBSA also showed temperature shifts relative to the weight percent of PCR in the blends, supporting the other evidence for interaction between the two polymers. All the techniques showed a good degree of compatibility between the two polymers.

کلیدواژه ها:

Blends ، Conductive Polymers ، Optical microscopy ، PAni.DBSA ، Polychloroprene ، Solution mixing