IONIC-STRENGTH AND TEMPERATURE-DEPENDENCE OF OXIDIZED SCLEROGLUCAN SOLUTION PROPERTIES - OPTICAL-ACTIVITY AND VISCOSITY DATA

被引：14

作者：

COVIELLO, T ^{[1
]}

DENTINI, M ^{[1
]}

CRESCENZI, V ^{[1
]}

VINCENTI, A ^{[1
]}

机构：

[1] UNIV ROMA LA SAPIENZA,DEPT CHEM,I-00185 ROME,ITALY

来源：

CARBOHYDRATE POLYMERS | 1995年 / 26卷 / 01期

关键词：

D O I：

10.1016/0144-8617(95)98827-4

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The physicochemical properties of oxidized scleroglucan have been investigated in aqueous solution as a function of ionic strength and/or temperature by means of polarimetry and viscosimetry techniques. For low salt concentrations (0.2 M NaCl) a normal polyelectrolyte behaviour was detected. Increasing the ionic strength up to 5.0 M NaCl a variation of chain structure would occur. Peculiar to the system was the temperature role which resulted in an irreversible annealing whose effect became stronger as the thermal cycles were repeated: a similar annealing process was also shown in the presence of salt (NaCl).

引用

页码：5 / 10

页数：6

共 23 条

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