Brillouin light scattering from shear waves in an epoxy resin through the glass transition

被引:5
作者
Comez, L [1 ]
Fioretto, D [1 ]
Verdini, L [1 ]
Rolla, PA [1 ]
机构
[1] UNIV PISA,DIPARTIMENTO FIS,INFM,I-56126 PISA,ITALY
关键词
D O I
10.1088/0953-8984/9/19/016
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
The temperature dependences of the characteristic frequency and lifetime of hypersonic transverse acoustic waves in the epoxy system EPON 828 have been probed by means of the Brillouin light scattering technique. Evidence has been found of a very broad dispersion region, together with a discontinuity close to the glass transition temperature T-g. For temperatures higher than T-g, the shear loss data obtained from Brillouin spectra are in quantitative agreement with dielectric data for the same system. For lower temperatures, the Brillouin data deviate from the dielectric ones, the former being more sensitive to the secondary relaxation processes.
引用
收藏
页码:3973 / 3979
页数:7
相关论文
共 20 条
[1]  
Berne BJ, 1976, Dynamic Light Scattering
[2]  
CASALINI R, 1997, UNPUB
[3]  
CHAMPION JV, 1982, J POLYM SCI PP, V20, P327
[4]   LIGHT-SCATTERING SPECTROSCOPY OF THE LIQUID-GLASS TRANSITION [J].
CUMMINS, HZ ;
LI, G ;
DU, WM ;
HERNANDEZ, J ;
TAO, NJ .
JOURNAL OF PHYSICS-CONDENSED MATTER, 1994, 6 :A51-A62
[5]   STRUCTURAL RELAXATION DYNAMICS IN SUPERCOOLED LIQUIDS [J].
CUMMINS, HZ ;
LI, G ;
DU, WM ;
HERNANDEZ, J .
JOURNAL OF NON-CRYSTALLINE SOLIDS, 1994, 172 :26-36
[6]   LIGHT-SCATTERING STUDY OF THE LIQUID-GLASS TRANSITION IN PROPYLENE CARBONATE [J].
DU, WM ;
LI, G ;
CUMMINS, HZ ;
FUCHS, M ;
TOULOUSE, J ;
KNAUSS, LA .
PHYSICAL REVIEW E, 1994, 49 (03) :2192-2205
[7]   THE DYNAMICS OF POLY(N-BUTYL ACRYLATE) ABOVE THE GLASS-TRANSITION [J].
FIORETTO, D ;
LIVI, A ;
ROLLA, PA ;
SOCINO, G ;
VERDINI, L .
JOURNAL OF PHYSICS-CONDENSED MATTER, 1994, 6 (28) :5295-5302
[8]   STRUCTURAL RELAXATION IN POLYMERIC FILMS STUDIED BY BRILLOUIN LIGHT SPECTROSCOPY [J].
FIORETTO, D ;
CARLOTTI, G ;
PALMIERI, L ;
SOCINO, G ;
VERDINI, L ;
LIVI, A .
PHYSICAL REVIEW B, 1993, 47 (22) :15286-15289
[9]   DYNAMICS OF POLYBUTADIENE ABOVE THE GLASS-TRANSITION STUDIED BY BRILLOUIN LIGHT-SCATTERING [J].
FIORETTO, D ;
PALMIERI, L ;
SOCINO, G ;
VERDINI, L .
PHYSICAL REVIEW B, 1994, 50 (01) :605-608
[10]   STUDY OF THE STRUCTURAL RELAXATION OF POLYACRYLATES BY BRILLOUIN LIGHT SPECTROSCOPY [J].
FIORETTO, D ;
PALMIERI, L ;
SOCINO, G ;
VERDINI, L .
JOURNAL OF NON-CRYSTALLINE SOLIDS, 1994, 172 :1130-1134