Radiation induced nano-scale free volume modifications in amorphous polymeric material: a study using positron annihilation lifetime spectroscopy

被引：9
|
作者：
Kumar, Rajesh [1 ,2 ]
Singh, Paramjit [3 ]
Gupta, S. K. [2 ,4 ]
Gupta, R. [2 ]
Jaiswal, M. K. [2 ]
Prasad, M. [5 ]
Roychowdhury, A. [6 ]
Chauhan, R. P. [7 ]
Das, D. [6 ]
机构：
[1] RPI, Mech Aerosp & Nucl Engn, 110 8th St, Troy, NY 12180 USA
[2] Guru Gobind Singh Indraprastha Univ, Univ Sch Basic & Appl Sci, New Delhi 110078, India
[3] Gujranwala Guru Nanak Khalsa Coll, Civil Lines, Ludhiana 141001, Punjab, India
[4] Aggarwal Coll, Dept Phys, Ballabgarh 121004, Haryana, India
[5] CEERI, CSIR, Pilani 333031, Rajasthan, India
[6] UGC DAE Consortium Sci Res, 3-LB-8, Kolkata 700098, India
[7] Natl Inst Technol, Dept Phys, Kurukshetra 136119, Haryana, India
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2017年 / 314卷 / 03期
关键词：
Gamma radiation; CR-39 (DOP); Free volume; Positron annihilation lifetime spectroscopy; UV-visible; GAMMA-IRRADIATION; STRUCTURAL MODIFICATIONS; CARBONACEOUS CLUSTERS; OPTICAL-PROPERTIES; CROSS-LINKING; PET POLYMERS; MEMBRANES; FILMS; POLYCARBONATE; ELECTROLYTES;
D O I：
10.1007/s10967-017-5510-9
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Radiation exposure modifies the nano scale free volume of the polymers which has direct correlation to certain properties of polymeric materials. CR-39 (DOP) polycarbonate polymeric films were exposed to gamma radiation at different doses for the study of nano scale free volume as well as structural and optical properties. An overall increase in the number of free volume holes at all doses was observed. UV-visible studies showed an improvement in the optical properties due to decrease in direct band gap energy. X-ray diffraction spectra of the polymer samples showed the increased amorphous nature of the polymer.
引用
收藏
页码：1659 / 1666
页数：8
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