Thermal stability of PVC formulations gamma irradiated at different dose rates

被引：21
作者：
Castaneda-Facio, A. [1 ]
Benavides, R. [2 ]
Martinez-Pardo, M. E. [3 ]
机构：
[1] Univ Autonoma Coahuila, Fac Ciencias Quim, Saltillo 25280, Coahuila, Mexico
[2] Ctr Invest Quim Aplicada, Saltillo 25294, Coahuila, Mexico
[3] Inst Nacl Invest Nucl, Mexico City 11801, DF, Mexico
来源：
RADIATION PHYSICS AND CHEMISTRY | 2014年 / 97卷
关键词：
PVC; Gamma irradiation; Thermal stabilization; Activation energy (E-a); POLY(VINYL CHLORIDE); STABILIZATION; DEGRADATION; DECOMPOSITION;
D O I：
10.1016/j.radphyschem.2013.11.004
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：
Polyvinyl chloride (PVC) formulated with two different stabilizer systems (Ca/Zn stearates and dibasic lead phthalate) irradiated at 75 kGy at two different dose rates were studied in order to evaluate their effect in thermal stability. Samples were degraded in a TGA instrument at different heating rates and the activation energy (E-a) to dehydrochlorination was calculated using the Arrhenius method in accordance with ASTM E 1641-07. TGA evaluations show that temperature for HCl evolution is higher when increasing heating rate, as well as higher resistance to degradation, for irradiated lead formulations; however, after activation energies calculation the irradiated Ca/Zn formulations are more stable. The controversial results are due to the low initial stability of lead additives in PVC. (C) 2013 Elsevier Ltd. All rights reserved.
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页码：75 / 80
页数：6
相关论文
共 25 条
  • [1] Kinetic and chemical studies of polymer cross-linking using thermal gravimetry and hyphenated methods. Degradation of polyvinylchloride
    Anthony, GM
    [J]. POLYMER DEGRADATION AND STABILITY, 1999, 64 (03) : 353 - 357
  • [2] ASTM, E164107 ASTM
  • [3] γ irradiation of poly(vinyl chloride) for medical applications
    Baccaro, S
    Brunella, V
    Cecilia, A
    Costa, L
    [J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2003, 208 : 195 - 198
  • [4] Synergism of Ca/Zn soaps in poly(vinyl chloride) thermal stability
    Balköse, D
    Gökçel, HI
    Göktepe, SE
    [J]. EUROPEAN POLYMER JOURNAL, 2001, 37 (06) : 1191 - 1197
  • [5] Thermal decomposition behaviour of crosslinked plasticized PVC
    Beltrán, MI
    García, JC
    Marcilla, A
    Hidalgo, M
    Mijangos, C
    [J]. POLYMER DEGRADATION AND STABILITY, 1999, 65 (01) : 65 - 73
  • [6] THE MODE OF ACTION OF METAL STEARATE STABILIZERS IN POLY(VINYL CHLORIDE) .3. INFLUENCE OF PREHEATING ON POLYENE FORMATION AND SECONDARY REACTIONS
    BENAVIDES, R
    EDGE, M
    ALLEN, NS
    SHAH, M
    TELLEZ, MM
    [J]. POLYMER DEGRADATION AND STABILITY, 1995, 48 (03) : 377 - 385
  • [7] Study of the natural ageing of PVC insulation for electrical cables
    Brebu, M
    Vasile, C
    Antonie, SR
    Chiriac, M
    Precup, M
    Yang, J
    Roy, C
    [J]. POLYMER DEGRADATION AND STABILITY, 2000, 67 (02) : 209 - 221
  • [8] Effect of stabilisers and lubricant on the thermal decomposition of chlorinated poly(vinyl chloride) (CPVC)
    Elakesh, EO
    Hull, TR
    Price, D
    Carty, P
    [J]. POLYMER DEGRADATION AND STABILITY, 2005, 88 (01) : 41 - 45
  • [9] Electron beam crosslinking of non-lead PVC formulations
    Facio, A. Castaneda
    Benavides, R.
    Pardo, M. E. Martinez
    Uribe, R.
    [J]. RADIATION PHYSICS AND CHEMISTRY, 2007, 76 (11-12) : 1720 - 1723
  • [10] Radiation-induced modifications of PVC compounds stabilized with non-lead systems
    Facio, AC
    Cantú, RB
    Pardo, MEM
    Abrego, HC
    [J]. RADIATION PHYSICS AND CHEMISTRY, 2004, 71 (1-2) : 247 - 252
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