Study of the effect of electric field on positron annihilation parameters in polymers

被引：9
|
作者：
Mohamed, HFM [1 ]
机构：
[1] Menia Univ, Fac Sci, Dept Phys, Menia 61519, Egypt
来源：
RADIATION PHYSICS AND CHEMISTRY | 2003年 / 68卷 / 3-4期
关键词：
polymer; electric field; positron annihilation lifetime; positronium formatior;
D O I：
10.1016/S0969-806X(03)00203-2
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Positron annihilation lifetime measurements have been performed to study the effect of an external electric field in several polymers. The application of the electric field on polytetrafluoroethylene (PTFE) and ultrahigh-molecular weight polyethylene (UHMWPE) noticeably decreased the ortho-positronium (o-Ps) intensity. The o-Ps intensity increased with increasing electric field strength in the poly(ethylene terephthalate), PET, poly(ethylene naphthalate), PEN, and poly(aryl-ether-ether-ketone), PEEK samples. The data are consistent with a hypothesis that nonpolar polymers (PTFE and UHMWPE) show a decrease in the o-Ps intensity with increasing electric field, while the effect seems to be opposite in polar polymers (PEN, PET and PEEK). (C) 2003 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：449 / 452
页数：4
相关论文
共 50 条
  • [1] The buildup of the electric field during positron annihilation lifetime spectroscopy measurement
    Qi, CZ
    Ma, D
    Hu, YH
    Yan, FY
    Gao, H
    Yang, Z
    Zhou, XX
    Wang, TM
    JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 2001, 39 (03) : 332 - 336
  • [2] Study of doping effect of NbInTiAlalloy by positron annihilation spectrum
    Zhang Lanzhi
    Wang Baoyi
    Wang Danni
    Wei Long
    Lin Junpin
    Wang Wenjun
    ACTA METALLURGICA SINICA, 2007, 43 (03) : 269 - 272
  • [3] Depth-dependent positron annihilation in different polymers
    Yang, J.
    Zhang, P.
    Cheng, G. D.
    Li, D. X.
    Wu, H. B.
    Li, Z. X.
    Cao, X. Z.
    Jia, Q. J.
    Yu, R. S.
    Wang, B. Y.
    APPLIED SURFACE SCIENCE, 2013, 280 : 109 - 112
  • [4] Glass transition and relaxation processes of polymers studied by positron annihilation
    Uedono, A
    Tanigawa, S
    KOBUNSHI RONBUNSHU, 1996, 53 (10) : 563 - 574
  • [5] Surface properties of polymers studied by slow positron annihilation spectroscopy
    Zhang, R
    Cao, H
    Yuan, JP
    Huang, CM
    Zhang, Q
    Sandreczki, TC
    Nielsen, B
    Asoka-Kumar, P
    Suzuki, R
    Ohdaira, T
    Jean, YC
    POSITRON ANNIHILATION: ICPA-11 - PROCEEDINGS OF THE 11TH INTERNATIONAL CONFERENCE ON POSITRON ANNIHILATION, KANSAS CITY, MISSOURI, USA, MAY 1997, 1997, 255-2 : 704 - 707
  • [6] Free volume study of 70 MeV carbon induced modification in polymers through positron annihilation
    Kumar, R
    Ali, SA
    Mahur, AK
    Das, D
    Naqvi, AH
    Virk, HS
    Prasad, R
    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2006, 244 (01) : 257 - 260
  • [7] Element-specific momentum distributions of positron and positronium annihilation in polymers
    Sato, K.
    Ito, K.
    Hirata, K.
    Yu, R. S.
    Kobayashi, Y.
    RADIATION PHYSICS AND CHEMISTRY, 2007, 76 (02) : 112 - 117
  • [8] Study on Ions Radiation Effect of New Zr Alloy by Positron Annihilation Technique
    Jiao X.
    Fan P.
    Zhang Q.
    Bai R.
    Wen A.
    Ma H.
    Kong S.
    Xia H.
    Yuan D.
    Zhu S.
    2018, Atomic Energy Press (52): : 2028 - 2032
  • [9] ON THE MEASUREMENT OF STRUCTURAL RELAXATION IN POLYMERS USING POSITRON-ANNIHILATION LIFETIME SPECTROSCOPY
    LI, XS
    BOYCE, MC
    JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 1993, 31 (07) : 869 - 873
  • [10] External electric field effect on positronium formation in some polar and nonpolar polymers at different temperatures
    Yu, R. S.
    Ito, Y.
    Suzuki, T.
    Shantarovich, V.
    Kondo, K.
    CHEMICAL PHYSICS, 2006, 327 (2-3) : 278 - 282
12345