A member of the teaching staff published a research paper about Polymer materials

News #01, Issue 49Jan 2019 | Núcey #01, Jhimarey 49, Mangí 01 Sallí 2019 | نوچەی 01، ژمارەى 49  مانگی 01 ساڵی 2019



Dr Mohammad Ghaffar Faraj the instructor in Physics Department in Faculty of Science and Health in our university has published a paper entitled “Impedance Spectroscopy as a Novel Approach to Probe the Phase Transition and Microstructures Existing in CS:PEO Based Blend Electrolytes”

The most outcomes of the research were (The objective of this work is to show how the change of phase transition can be studied from the pattern of DC conductivity versus 1000/T. Furthermore, an obvious increase of crystalline phase as a consequence of an increase of various amounts of PEO to CS-based electrolyte has also predicted from the impedance plots (

He declared about the objectives of the research In this work the role of phase transition of PEO from crystalline to amorphous phases on DC conductivity enhancement in chitosan-based polymer electrolyte was discussed. Silver ion-conducting polymer electrolytes based on chitosan (CS) incorporated with silver nitrate (AgNt) is prepared via solution cast technique. Various amounts of polyethene oxide (PEO) are added to the CS: AgNt

a system to prepare blend polymer electrolytes. Ultraviolet-visible (UV-vis) spectrophotometry is used to confirm that the blended samples containing AgNt salt exhibit a broad absorption peak. From optical micrograph images, it is apparent that small white specs appear on the surface of the samples. The SEM results clearly show the aggregated silver nanoparticles. The enlargement of the crystalline area was observed from the morphological emergence and impedance plots. The phase separation in SEM images was observed at high PEO concentration. The XRD consequences support the morphological manifestation. In this study, a new approach is offered to explore the microstructures existing in the blend electrolytes. The width of the semicircle linked to crystalline phase in impedance spectra was found to be increased with the increase of PEO concentration. A slow increase of DC conductivity was observed at low temperatures while above 333 K an immediate change in DC conductivity was obtained.

The rapid rise of DC conductivity at high temperatures is correlated with the DSC results and impedance studies at high temperatures."

The point that concluded for the researcher is " The results of impedance study for various concentrations of PEO at ambient temperature and impedance spectra at selected temperatures reveals that impedance measurement can be used as a unique approach to exploring the microstructure of polymer electrolyte based materials. "

This research in polymer material field has a role in academic infrastructure in Kurdistan:

" The results of impedance study for various concentrations of PEO at ambient temperature and impedance spectra at selected temperatures reveals that impedance measurement can be used as a unique approach to exploring the microstructure of polymer electrolyte based materials."

This research in Polymer material field is useful for the Kurdistan immediate issues: ”Solid polymer electrolytes (SPEs) have emerged as a new class of electrolyte materials for the replacement of the conventional organic sol-gel electrolyte. This is due to their long life, safety, processability, flexibility, and both electrochemical and dimensional stabilities."

This research is completed in a cooperate way by the following in seven months : 

Assistant Prof. Dr Shujahadeen Bakr Aziz (University of Sulaimani) 

Assistant Prof. Dr Mohammad Ghaffar Faraj ( Koya University)

Prof. Dr Omed Gharib Abdullah (University of Sulaimanه)

This research is published in UK Nature research Journal in Scientific Reports. This Journal has the impact factor 122,4 and it is the best fifth Journal in the field of Multidisciplinary Discipline. For reading, click here.


Assist Prof. Dr Mohammad Ghaffar
Major: Solar Power
Published Research: 37
Academic Site: Click here




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