Investigation of the D.C. electrical conductivities of PVC and PMMA composites with some ionic liquids at variable temperatures. +CD

number: 
1942
إنجليزية
department: 
Degree: 
Imprint: 
Chemistry
Author: 
Rasha Mohamed Ali
Supervisor: 
Dr. Hadi M. A. Abood
year: 
2008

Abstract:

The electrical conductivities of PVC and PMMA were investigated either alone or composite with ionic liquids up to 110 oC, choline dodecyl benzene sulfonate, ammonium dodecyl benzene sulfonate and choline chloride / urea were added in 10 wt % and 20 wt %. The conductivities of both composite polymers were improved changing the behavior of these polymers from insulator into antistatic characterization as their conductivities reach 10-9 S. cm-1. The experimental results showed that the D.C electrical conductivities were clearly increased with increasing the added weight of ionic liquids and also increased with increasing the temperature. Where in each cases PVC has higher conductivities than PMMA polymer, in addition added ionic liquids showed almost equal effect on either PVC or PMMA. However, these ionic liquids showed the following trends of influence of conductivity:- choline chloride / urea > ammonium dodecyl benzene sulfonate > choline dodecyl benzene sulfonate . Furthermore, the presence of ionic liquids in each wt% reduced the D.C activation energy and more decreased with increasing the added weight of ionic liquids.