دانشگاه آزاد اسلامی واحد تهران جنوب

صفحه اصلی / اولین کنفرانس ملی شیمی، نانو مواد، پلیمر- چالش ها و کاربردها

Conductivity of Elastomeric Material “Conductive Blends of Polyaniline Dodecylbenzenesulfonate and poly(epichlorhydrin)”

نویسندگان :

Elaheh Bakhtiarian¹

1- ازاد اسلامی تهران جنوب

کلمات کلیدی :

Conductive Polymers،Blends

چکیده :

Polyaniline soluble in organic solvents was prepared by oxidative polymerisation of aniline in dodecylbenzenesulphonic acid (DBSA) media. The solubility parameter was calculated1, and the most suitable solvent (tetrahydrofuran) was selected2 for the solubility. The most compatible polymer poly(epichlorhydrin) [PECH] was selected for blending. Polyaniline dodecylbenzenesulfonate (PAni.DBSA) and poly(epichlorhydrin) [PECH] were blended out via solution mixing. Via optical microscopy and Transmission electron microscopy (TEM), morphological studies were carried out, and thermal analysis was performed. All the techniques showed a good degree of compatibility between the two polymers. The electrical conductivities of blends PAni.DBSA/ poly(epichlorhydrin) with proportions of 1 to 60 wt% PAni.DBSA was measured by 2- and 4-probe techniques. The electrical conductivity increased as the weight percent of PAni.DBSA increased, showing a percolation threshold below 1% by mass. This was explained by a change in the conformation of the polymeric chains leading to an increase in the conductivity. The critical exponent3 was estimated.