POLYVINYL BUTYRAL AS A DISPERSANT FOR BARIUM-TITANATE IN A NONAQUEOUS SUSPENSION

被引：65

作者：

BHATTACHARJEE, S ^{[1
]}

PARIA, MK ^{[1
]}

MAITI, HS ^{[1
]}

机构：

[1] CENT GLASS & CERAM RES INST,ELECTROCERAM LAB,CALCUTTA 700032,W BENGAL,INDIA

来源：

JOURNAL OF MATERIALS SCIENCE | 1993年 / 28卷 / 23期

关键词：

D O I：

10.1007/BF01352219

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Polyvinyl butyral (PVB) was used as a dispersant for BaTiO3 in a toluene-methanol system and its efficiency was evaluated by measuring the zeta potential and by a rheological study of the suspension. Addition of only 1.6 vol % low-molecular-weight (50000) PVB is effective in making a well-dispersed suspension. But a lower concentration (0.6 vol %) of high-molecular-weight (200 000) PVB is necessary to stabilize the suspension due to the longer chain length of the polymer, which enhances steric stabilization. Dispersion of BaTiO3 by PVB is better in a reverse azeotropic composition of toluene-methanol (72.4:27.6) than in an azeotropic composition.

引用

页码：6490 / 6495

页数：6

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