DIELECTRIC-PROPERTIES OF SOLUTION GROWN CELLULOSE-ACETATE THIN-FILMS

被引：20

作者：

SHARMA, AK

RAMU, C

机构：

[1] Department of Physics, College of Engineering, S. V. University, Tirupati

来源：

MATERIALS LETTERS | 1991年 / 11卷 / 3-4期

关键词：

D O I：

10.1016/0167-577X(91)90100-K

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The dielectric capacitance and loss behaviour of solution grown cellulose acetate thin films were studied as a function of temperature (range 300-420 K) in the frequency range 50 Hz-15 kHz. The capacitance versus temperature plots show a single peak around 345 K which shifts towards higher temperatures with increasing frequency. The loss behaviour exhibits two peaks, occurring at 312 and 345 K. The low-temperature peak is interpreted in terms of small-scale movements of the dipole groups while the high-temperature peak is attributed to the dipole-segmental loss.

引用

页码：128 / 132

页数：5

共 11 条

[1]

BAHRI AK, 1982, UNPUB THIN SOLID FIL, V15, P689

[2]

BAHRI R, 1979, THIN SOLID FILMS, V62, P296

[3]

GOWARIKER VR, 1907, POLYM SCI, P158

[4]

IKADA E, 1975, POLYMER, V15, P101