Thermogravimetric analysis of organic binder segregation during drying of particulate suspensions

被引：8

作者：

Mandanas, MM ^{[1
]}

Messing, GL

机构：

[1] Penn State Univ, Particulate Mat Ctr, University Pk, PA 16802 USA

[2] Penn State Univ, Mat Res Lab, University Pk, PA 16802 USA

来源：

THERMOCHIMICA ACTA | 2000年 / 363卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

drying; binder; segregation; particulate; TGA;

D O I：

10.1016/S0040-6031(00)00591-8

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Thermogravimetric analysis (TGA) was used to evaluate microstructural evolution and binder segregation during drying of particulate suspensions of submicrometer alumina. The addition of 2 and 4 wt.% poly(vinyl alcohol) (PVA) binder decreased the evaporation rate by similar to 12 and similar to 20%, respectively, during the constant rate drying period. Increasing the PVA molecular weight (MW) extended the drying time also. At 4 wt.% addition, an acrylic emulsion binder did not affect the drying behavior but at 2 wt.% addition, the initial evaporation rate decreased by approximately 24%. It is shown that the TGA can be used to determine the drying stages of a particulate suspension during drying. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：37 / 45

页数：9

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