The effect of gamma irradiation on chemical, morphology and optical properties of polystyrene nanosphere at various exposure time

International Nuclear Science, Technology and Engineering Conference 2017

原子能学

Yabagi, Jibrin Alhaji^1,2 ; Kimpa, Mohammed Isah^1,3 ; Muhammad, Muhammad Nmayaya^1,2 ; Rashid, Saiful Bin^4 ; Zaidi, Embong^1 ; Agam, Mohd Arif^1

Department of Science, Universiti Tun Hussein Onn Malaysia, Pagoh Campus, Pagoh, Muar, Johor

84600, Malaysia^1

Department of Physics, Ibrahim Badamasi Babangida University Lapai Niger State, Lapai

286, Nigeria^2

Department of Physics, Federal University of Technology Minna Niger State, Bosso

09, Nigeria^3

Department of Physics, Faculty of Science, University of Technology Malaysia, Skudai, Johor

81310, Malaysia^4

关键词: Absorbance measurements;    Amorphous state;    Fourier transformations;    Gamma irradiation;    Irradiation time;    Morphological changes;    Optical energy band gap;    Polystyrene nanospheres;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/298/1/012004/pdf
DOI  :  10.1088/1757-899X/298/1/012004

来源: IOP

【 摘 要 】

Irradiation of polymers causes structural, chemical and the optical properties changes. Polystyrene nanosphere was drop coated to substrates and the gamma irradiation was carried out in a Cesium-137 (Cs-137) source chamber at different time (1-5 hours) with constant dose of 30 kGy. Fourier transformation infrared spectroscopy (FTIR) and Raman spectroscopy were employed to characterize the chemical properties of irradiated polystyrene while Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM) were used to study the surface morphological changes of the samples. The optical energy band gaps of the thin films were investigated and studied using transmittance and absorbance measurements. The results obtained revealed that as irradiation time increases the optical properties changes and polystyrene gradually undergoes crystal to carbonaceous from its amorphous state. The average particles diameter and roughness of the samples decreases with increasing irradiation time.