A study of polymer degradation using Doppler Broadening Positron Annihilation Spectroscopy

被引:1
作者
Beyeler, NT [1 ]
Weiss, KA [1 ]
Schaffer, JP [1 ]
机构
[1] Lafayette Coll, Easton, PA 18042 USA
来源
POSITRON ANNIHILATION: ICPA-11 - PROCEEDINGS OF THE 11TH INTERNATIONAL CONFERENCE ON POSITRON ANNIHILATION, KANSAS CITY, MISSOURI, USA, MAY 1997 | 1997年 / 255-2卷
关键词
polycarbonate; polymethyl methacrylate (PMMA); positron annihilation; ultraviolet degradation;
D O I
10.4028/www.scientific.net/MSF.255-257.278
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Doppler Broadening Positron Annihilation Spectroscopy (DBPAS) has been used to investigate the bulk defect concentration of polymer samples which have been subjected to radiation. The experimental variables under investigation were the duration and type of exposure. ?he key results are summarized as follows. (i) the resolution of the experimental apparatus was adequate in statistically distinguishing between distinct defect concentrations at successive exposure intervals; (ii) for PMMA, increased radiation causes the S parameter to increase, however in polycarbonate samples, a decrease in S parameter was found.
引用
收藏
页码:278 / 280
页数:3
相关论文
共 50 条
[41]   Reactor Pressure Vessel Steel Degradation Studied by Mossbauer and Positron Annihilation Spectroscopy [J].
Lipka, Jozef .
JORDAN JOURNAL OF PHYSICS, 2009, 2 (02) :73-88
[42]   Study on polystyrene via positron annihilation lifetime and Doppler broadened techniques [J].
Mohamed, HFM ;
Abd El-Aziz, NS .
POLYMER, 2001, 42 (19) :8013-8017
[43]   Evolution, migration and clustering of helium-vacancy complexes in RAFM steel- depth resolved positron annihilation Doppler broadening study [J].
Ramachandran, R. ;
David, C. ;
Rajaraman, R. ;
Panigrahi, B. K. ;
Amarendra, G. .
PHILOSOPHICAL MAGAZINE, 2016, 96 (22) :2385-2396
[44]   Defect imaging of structural objects using positron annihilation spectroscopy [J].
Hunt, AW ;
Spaulding, R ;
Urban-Klaehn, J ;
Harmon, JF ;
Wells, DP .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2005, 241 (1-4) :262-266
[45]   Novel data analysis tool for the evaluation of Coincidence Doppler Broadening Spectra of the positron-electron annihilation line [J].
Chryssos, Leon ;
Hugenschmidt, Christoph .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2023, 1050
[46]   Identification of vacancies on each sublattice of SiC by coincident Doppler broadening of the positron annihilation photons after electron irradiation [J].
Müller, MA ;
Rempel, AA ;
Reichle, K ;
Sprengel, W ;
Major, J ;
Schaefer, HE .
POSITRON ANNIHILATION - ICPA-12, 2001, 363-3 :70-72
[47]   Positron Annihilation Spectroscopy Study on Annealing Effect of CuO Nanoparticles [J].
Shi, Jianjian ;
Wang, Jiaheng ;
Yang, Wei ;
Zhu, Zhejie ;
Wu, Yichu .
MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS, 2016, 19 (02) :316-321
[48]   Positron annihilation lifetime spectroscopy study of Kapton thin foils [J].
Kanda, G. S. ;
Ravelli, L. ;
Loewe, B. ;
Egger, W. ;
Keeble, D. J. .
JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2016, 49 (02)
[49]   Positron Annihilation Spectroscopy Techniques Applied to the Study of an HPGe Detector [J].
do Nascimento, E. ;
Vanin, V. R. ;
Maidana, N. L. ;
Silva, T. F. ;
Rizzutto, M. A. ;
Fernandez-Varea, J. M. .
XXXV BRAZILIAN WORKSHOP ON NUCLEAR PHYSICS, 2013, 1529 :103-106
[50]   Study of the photodegradation of epoxy polymers with slow positron annihilation spectroscopy [J].
Zhang, R ;
Gu, X ;
Chen, H ;
Zhang, J ;
Li, Y ;
Nguyen, T ;
Sandreczki, TC ;
Jean, YC .
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 2004, 42 (13) :2441-2459