STRUCTURAL RELAXATION IN POLYMERIC FILMS STUDIED BY BRILLOUIN LIGHT SPECTROSCOPY

被引：21

作者：

FIORETTO, D ^{[1
]}

CARLOTTI, G ^{[1
]}

PALMIERI, L ^{[1
]}

SOCINO, G ^{[1
]}

VERDINI, L ^{[1
]}

LIVI, A ^{[1
]}

机构：

[1] UNIV PISA,DIPARTIMENTO FIS,I-56100 PISA,ITALY

来源：

PHYSICAL REVIEW B | 1993年 / 47卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.47.15286

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The structural relaxation of polybutylacrylate films deposited on Si substrates has been studied by means of the Brillouin light-scattering technique. Measurements have been taken in the temperature range between 170 and 460 K. The contemporary presence in the spectra of the peaks relative to the longitudinal acoustic and longitudinal guided modes enabled us to obtain the whole set of relaxation parameters from analysis of Brillouin spectra. An Arrhenius scaling law and a Kohlraush-Williams-Watt relaxation function with a constant stretching exponent beta(k) =0.45 have shown to be appropriate for interpreting our experimental data.

引用

页码：15286 / 15289

页数：4

共 17 条

[1] RELATIONSHIP BETWEEN THE TIME-DOMAIN KOHLRAUSCH-WILLIAMS-WATTS AND FREQUENCY-DOMAIN HAVRILIAK-NEGAMI RELAXATION FUNCTIONS [J].