PHASE-SEPARATION IN SILICA SOL-GEL SYSTEM CONTAINING POLYACRYLIC-ACID .4. EFFECT OF CHEMICAL ADDITIVES

被引：27

作者：

NAKANISHI, K

SOGA, N

机构：

[1] Department of Industrial Chemistry, Faculty of Engineering, Kyoto University, Kyoto

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1992年 / 142卷 / 1-2期

关键词：

D O I：

10.1016/S0022-3093(05)80005-5

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Effects of additions of various organic solvents on the formation of porous gel structure have been investigated for the acid-catalyzed, tetraethoxysilane-based sol-gel systems containing polyacrylic acid (HPAA). Additions of various solvents induced changes both in the solubility of HPAA and in the polymerization rate of silica, thus influencing the final gel morphology formed through phase separation and gelation processes. Solvents which increase the solubility of HPAA and accelerate a polymerization of silica, e.g., formamide, lead to the formation of fine interconnected structures for a large range of compositions.

引用

收藏

页码：45 / 54

页数：10

相关论文

共 13 条

[1] SOLVENT EFFECTS ON THE CONDENSATION STAGE OF THE SOL-GEL PROCESS [J].

ARTAKI, I ;

ZERDA, TW ;

JONAS, J .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1986, 81 (03) :381-395

[2]

CAHN JW, 1965, PHYS CHEM GLASSES, V6, P181

[3]

Corriu R. J. P., 1988, ULTRASTRUCTURE PROCE, P113

[4] PHASE-SEPARATION IN SILICA SOL-GEL SYSTEM CONTAINING POLYACRYLIC-ACID .1. GEL FORMATION BEHAVIOR AND EFFECT OF SOLVENT COMPOSITION [J].

NAKANISHI, K ;

SOGA, N .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1992, 139 (01) :1-13

[5] PORE SURFACE CHARACTERISTICS OF MACROPOROUS SILICA-GELS PREPARED FROM POLYMER-CONTAINING SOLUTION [J].

NAKANISHI, K ;

SAGAWA, Y ;

SOGA, N .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1991, 134 (1-2) :39-46

[6] PHASE-SEPARATION IN SILICA SOL-GEL SYSTEM CONTAINING POLYACRYLIC-ACID .2. EFFECTS OF MOLECULAR-WEIGHT AND TEMPERATURE [J].

NAKANISHI, K ;

SOGA, N .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1992, 139 (01) :14-24

[7] PHASE-SEPARATION IN GELLING SILICA ORGANIC POLYMER-SOLUTION - SYSTEMS CONTAINING POLY(SODIUM STYRENESULFONATE) [J].

NAKANISHI, K ;

SOGA, N .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1991, 74 (10) :2518-2530

[8] PHASE-SEPARATION IN SILICA SOL-GEL SYSTEM CONTAINING POLYACRYLIC-ACID .3. EFFECT OF CATALYTIC CONDITION [J].

NAKANISHI, K ;

SOGA, N .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1992, 142 (1-2) :36-44

[9] EFFECT OF FORMAMIDE ADDITIVE ON THE CHEMISTRY OF SILICA SOL GELS .1. NMR OF SILICA HYDROLYSIS [J].

ORCEL, G ;

HENCH, L .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1986, 79 (1-2) :177-194

[10] EFFECT OF FORMAMIDE ADDITIVE ON THE CHEMISTRY OF SILICA SOL GELS .2. GEL STRUCTURE [J].

ORCEL, G ;

HENCH, LL ;

ARTAKI, I ;

JONAS, J ;

ZERDA, TW .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1988, 105 (03) :223-231