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
[21]   Doppler broadening measurements of the electron-positron annihilation radiation in nanocrystalline ZrO2 [J].
M. Chakrabarti ;
D. Bhowmick ;
A. Sarkar ;
S. Chattopadhyay ;
S. Dechoudhury ;
D. Sanyal ;
A. Chakrabarti .
Journal of Materials Science, 2005, 40 :5265-5268
[22]   Statistical analysis of the Doppler broadening coincidence spectrum of the electron-positron annihilation radiation in aluminum [J].
do Nascimento, E. ;
Helene, O. ;
Vanin, V. R. ;
da Cruz, M. T. F. .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2006, 247 (01) :38-41
[23]   Doppler-broadening measurements of positron annihilation with high-momentum electrons in pure elements [J].
Brusa, RS ;
Deng, W ;
Karwasz, GP ;
Zecca, A .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2002, 194 (04) :519-531
[24]   A high-performance, high-resolution positron annihilation coincidence Doppler broadening spectrometer [J].
Van Petegem, S ;
Van Waeyenberge, B ;
Segers, D ;
Dauwe, C .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2003, 513 (03) :622-630
[25]   Statistical analysis of the Doppler broadening coincidence spectrum of electron-positron annihilation radiation in silicon [J].
do Nascimento, E. ;
Helene, O. ;
Vanin, V. R. ;
da Cruz, M. T. F. ;
Moralles, M. .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2009, 609 (2-3) :244-249
[26]   Effect of instrumental instability and detector parameters in positron annihilation Coincidence Doppler Broadening measurements: a Monte Carlo simulation study [J].
Sudarshan, K ;
Pujari, PK ;
Goswami, A .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2003, 515 (03) :862-868
[27]   Tellurium coincidence Doppler broadening spectroscopy study [J].
Dominguez-Reye, R. .
RESULTS IN PHYSICS, 2019, 12 :1455-1456
[28]   Measurement of positron spin polarization by using the Doppler broadening method [J].
Nagai, Y ;
Nagashima, Y ;
Kim, J ;
Itoh, Y ;
Hyodo, T .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2000, 171 (1-2) :199-203
[29]   Volumetric effects in the degradation of dimethacrylate-based polymer/filler nanocomposites: A positron annihilation study [J].
Shpotyuk, Oleh ;
Ingram, Adam ;
Shpotyuk, Yaroslav ;
Filipecki, Jacek ;
Shpotyuk, Olha .
POLYMER DEGRADATION AND STABILITY, 2020, 176
[30]   Salt weathering effect of polymer coatings studied by positron annihilation spectroscopy [J].
Li, Y ;
Wu, YC ;
Zhang, R ;
Chen, H ;
Zhang, J ;
Suzuki, T ;
Sandreckzki, TC ;
Ohdaira, T ;
Jean, YC .
RADIATION PHYSICS AND CHEMISTRY, 2003, 68 (3-4) :581-587
12345