SOME OF THE DIELECTRIC-PROPERTIES OF STARCH

被引：2

作者：

MOTELEB, MMA ^{[1
]}

机构：

[1] CAIRO UNIV, FAC SOCIAL ANTHROPOL,DEPT CHEM, CAIRO, EGYPT

来源：

POLYMER INTERNATIONAL | 1994年 / 35卷 / 03期

关键词：

STARCH; STARCH NACL; DIELECTRIC RELAXATION; THERMAL TRANSITION;

D O I：

10.1002/pi.1994.210350305

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The dielectric constant and dielectric loss were determined for solid starch free of and contaminated with sodium chloride over a frequency range of 0.1-10 000 kc/s at temperatures from 10 to 60-degrees-C. The results are compared with those of cellulosic fibres. At high frequency both starch and cellulosic fibres exhibit a dielectric dispersion and loss peak. The chain flexibility of starch has a decided effect on the location of the peak. The low frequency absorption appears only when starch is contaminated with sodium chloride, which modifies the dielectric properties of the starch sample.

引用

页码：243 / 247

页数：5

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