Electron irradiation effects on partially fluorinated polymer films: Structure-property relationships

被引:70
作者
Nasef, MM [1 ]
Dahlan, KZM
机构
[1] Univ Teknol PETRONAS, Chem Engn Program, Tronoh 31750, Perak, Malaysia
[2] Agensi Nuklear Malaysia, Radiat Proc Tech Div, Bangi 43000, Kajang, Malaysia
关键词
electron irradiation; PVDF films; ETFE films; FTIR; DSC; mechanical tester;
D O I
10.1016/S0168-583X(02)02068-2
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
The effects of electron beam irradiation on two partially fluorinated polymer films i.e. poly(vinylidene fluoride) (PVDF) and poly(ethylene-tetrafluoroethylene) copolymer (ETFE) are studied at doses ranging from 100 to 1200 kGy in air at room temperature. Chemical structure, thermal and mechanical properties of irradiated films are investigated. FTIR show that both PVDF and ETFE films undergo similar changes in their chemical structures including the formation of carbonyl groups and double bonding. The changes in melting and crystallisation temperatures (T-m and T-c) in both irradiated films are functions of irradiation dose and reflect the disorder in the chemical structure caused by the competition between crosslinking and chain scission. The heat of melting (DeltaH(m)) and the degree of crystallinity (X-c) of PVDF films show no significant changes with the dose increase, whereas those of ETFE films are reduced rapidly after the first 100 kGy. The tensile strength of PVDF films is improved by irradiation compared to its rapid deterioration in ETFE films, which stemmed from the degradation prompted by the presence of radiation sensitive tetrafluoroethylene (TFE) comonomer units. The elongation at break of both films drops gradually with the dose increase indicating the formation of predominant crosslinked structures at high doses. However, the response of each polymer to crosslinking and main chain scission at various irradiation doses varies from PVDF to ETFE films. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:604 / 614
页数:11
相关论文
共 17 条
  • [1] Changes in poly-vinylidene fluoride produced by electron irradiation
    Adem, E
    Rickards, J
    Burillo, G
    Avalos-Borja, M
    [J]. RADIATION PHYSICS AND CHEMISTRY, 1999, 54 (06) : 637 - 641
  • [2] [Anonymous], ULLMANNS ENCY IND A
  • [3] Benedetti E, 1996, POLYM INT, V41, P35, DOI 10.1002/(SICI)1097-0126(199609)41:1<35::AID-PI579>3.0.CO
  • [4] 2-T
  • [5] A FTIR STUDY OF PVDF IRRADIATED BY MEANS OF SWIFT HEAVY-IONS
    BETZ, N
    LEMOEL, A
    BALANZAT, E
    RAMILLON, JM
    LAMOTTE, J
    GALLAS, JP
    JASKIEROWICZ, G
    [J]. JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 1994, 32 (08) : 1493 - 1502
  • [6] CALORIMETRIC MEASUREMENTS OF MEV ION-IRRADIATED POLYVINYLIDENE FLUORIDE
    CALCAGNO, L
    MUSUMECI, P
    PERCOLLA, R
    FOTI, G
    [J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1994, 91 (1-4) : 461 - 464
  • [7] FLORIN RE, 1972, FLUOROPOLYMERS, P317
  • [8] The radiation chemistry of fluoropolymers
    Forsythe, JS
    Hill, DJT
    [J]. PROGRESS IN POLYMER SCIENCE, 2000, 25 (01) : 101 - 136
  • [9] GALPERIN YL, 1977, POLYM SCI USSR, V19, P3073
  • [10] RADIATION CROSS-LINKING OF FLUOROPOLYMERS - A REVIEW
    LYONS, BJ
    [J]. RADIATION PHYSICS AND CHEMISTRY, 1995, 45 (02): : 159 - 174