Extraction and solution properties of the galactomannan from the seeds of Cassia java']javanica L.

被引：11

作者：

Azero, EG ^{[1
]}

Lopes, LL ^{[1
]}

Andrade, CT ^{[1
]}

机构：

[1] UNIV FED RIO DE JANEIRO,INST MACROMOL PROF ELOISA MANO,RIO JANEIRO,BRAZIL

来源：

POLYMER BULLETIN | 1997年 / 39卷 / 05期

关键词：

D O I：

10.1007/s002890050194

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 galactomannan from the seed of Cassia javanica L. was extracted in 26% yield and submitted to viscosity measurements. The intrinsic viscosity [eta] = 11.3 dl/g was determined at 25 degrees C and used to calculate the viscosity average molecular weight, (M) over bar(v) = 1.5 x 10(6). Variation of the specific viscosity at zero shear rate as a function of the coil overlap parameter revealed two critical concentrations, C* = 0.54 and C** = 2.6 g/l, more frequently observed for rigid polysaccharides.

引用

页码：621 / 625

页数：5

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