Physical aging of poly(vinyl acetate).: A thermally stimulated depolarization current investigation

被引：24
作者：
Goitiandia, L
Alegría, A
机构：
[1] UPV, EHU, Fac Quim, Dept Fis Mat, San Sebastian 20080, Spain
[2] UPV, EHU, CSIC, Ctr Mixto, San Sebastian 20080, Spain
来源：
JOURNAL OF NON-CRYSTALLINE SOLIDS | 2001年 / 287卷 / 1-3期
关键词：
D O I：
10.1016/S0022-3093(01)00578-6
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The influence of physical aging on the dielectric alpha -relaxation of poly(vinyl acetate) (PVAc) is investigated by means of the thermally stimulated depolarization currents (TSDCs) technique. The obtained TSDC data are analyzed in terms of the Kohlrausch-Williains-Watts (KWW) equation for an isothermal decay of a stored charge. Assuming that at temperatures less than the glass transition temperature the shape of the KWW function depends neither on the temperature nor on the thermal history, the generalized Bucci and Fieschi equation allows us to obtain the dependence of the KWW time. The results obtained are interpreted in the Adam and Gibbs theory framework. (C) 2001 Elsevier Science B.V. All rights reserved.
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收藏
页码：237 / 241
页数：5
相关论文
共 33 条
[1]   ON TEMPERATURE DEPENDENCE OF COOPERATIVE RELAXATION PROPERTIES IN GLASS-FORMING LIQUIDS [J].
ADAM, G ;
GIBBS, JH .
JOURNAL OF CHEMICAL PHYSICS, 1965, 43 (01) :139-&
[2]   Dielectric investigation of the temperature dependence of the nonesponentiality of the dynamics of polymer melts [J].
Alegría, A ;
Colmenero, J ;
Mari, PO ;
Campbell, IA .
PHYSICAL REVIEW E, 1999, 59 (06) :6888-6895
[3]   On the interpretation of the TSDC results in the study of the alpha-relaxation of amorphous polymers [J].
Alegria, A ;
Goitiandia, L ;
Colmenero, J .
POLYMER, 1996, 37 (14) :2915-2923
[4]   ALPHA-RELAXATION IN THE GLASS-TRANSITION RANGE OF AMORPHOUS POLYMERS .1. TEMPERATURE BEHAVIOR ACROSS THE GLASS-TRANSITION [J].
ALEGRIA, A ;
GUERRICAECHEVARRIA, E ;
GOITIANDIA, L ;
TELLERIA, I ;
COLMENERO, J .
MACROMOLECULES, 1995, 28 (05) :1516-1527
[5]  
Alegria A, 1998, RRD MACROMOL RES, V3, P49
[6]   alpha-Relaxation in the glass-transition range of amorphous polymers .2. Influence of physical aging on the dielectric relaxation [J].
Alegria, A ;
Goitiandia, L ;
Telleria, I ;
Colmenero, J .
MACROMOLECULES, 1997, 30 (13) :3881-3887
[7]  
Alegría A, 2000, J POLYM SCI POL PHYS, V38, P2105, DOI 10.1002/1099-0488(20000815)38:16<2105::AID-POLB40>3.0.CO
[8]  
2-7
[9]  
BRAUNLICH P, 1979, TOPICS APPL PHYSICS, V37
[10]   IONIC THERMOCONDUCTIVITY . METHOD FOR INVESTIGATION OF POLARIZATION IN INSULATORS [J].
BUCCI, C ;
FIESCHI, R .
PHYSICAL REVIEW LETTERS, 1964, 12 (01) :16-&
1234