Photoluminescence, optical band gap and surface wettability of some polymeric track detectors modified by electron beam

被引：30
作者：
Zaki, M. F. [1 ,2 ]
Ghaly, W. A. [3 ,4 ,5 ]
El-Bahkiry, H. S. [2 ,6 ]
机构：
[1] Atom Energy Author, Expt Nucl Phys Dept, Nucl Res Ctr, Cairo, Egypt
[2] Jazan Univ, Fac Med, Dept Med Phys, Jazan, Saudi Arabia
[3] Atom Energy Author, Accelerators & Ion Sources Dept, Nucl Res Ctr, Cairo, Egypt
[4] Atom Energy Author, Cent Lab Elemental & Isotop Anal, Nucl Res Ctr, Cairo, Egypt
[5] Jazan Univ, Dept Med Phys, Fac Med, Preparatory Year Deanship, Jazan, Saudi Arabia
[6] Mansoura Univ, Fac Med, Clin Oncol & Nucl Med Dept, Cairo, Egypt
来源：
SURFACE & COATINGS TECHNOLOGY | 2015年 / 275卷
关键词：
Electron beam; Photoluminescence analysis; Optical properties; Surface wettability; Surface free energy; GAMMA-RADIATION; FREE-ENERGY; ION-BOMBARDMENT; COPOLYMER; CONDUCTIVITY; IRRADIATION; OXIDATION; ADHESION; CR-39; PET;
D O I：
10.1016/j.surfcoat.2015.04.041
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In the present study, modifications have been performed on two polymeric track detectors (PTDs), CR-39 and Makrofol. The samples were irradiated with 1.5 MeV electron beam at different doses ranging from 0 to 500 kGy. Changes in photoluminescence (PL) and ultraviolet-visible (UV-vis) spectrophotometry as well as surface properties have been carried out for all PTD samples. The PL spectra indicate noticeable decrease of the integrated intensity for both types of irradiated PTDs with the increase of electron beam doses. This may be due to the creation of defects in the irradiated PTDs polymers. UV-vis spectra reveal that the optical absorption was shifted towards higher wavelength region after irradiation with electron beam. The optical band gap energy and Urbach's energy are decreased with increasing electron beam doses. Contact angle measurements show that the wettability and surface free energy are increased for irradiated samples with increasing electron irradiation doses. The change in roughness is also investigated. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：363 / 368
页数：6
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