PHASE-SEPARATION IN GELLING SILICA ORGANIC POLYMER-SOLUTION - SYSTEMS CONTAINING POLY(SODIUM STYRENESULFONATE)

被引：375
作者：
NAKANISHI, K
SOGA, N
机构：
[1] Department of Industrial Chemistry, Faculty of Engineering, Kyoto University, Kyoto
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1991年 / 74卷 / 10期
关键词：
D O I：
10.1111/j.1151-2916.1991.tb06794.x
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：
Phase separation which occurs in parallel to the hydrolysis and gelation of alkoxysilane solution containing poly(sodium styrenesulfonate) (NaPSS) has been investigated. Depending on the reaction conditions, gel morphologies such as isolated pores, particle aggregates, and interconnected continuous pores from 0.1 to 100-mu-m long have been observed. Time-resolved light scattering of gelling solution suggested the occurrence of spinodal phase separation through the polymerization of silica and the subsequent freezing of the developing structure by sol-gel transition. The effects of reaction parameters on the periodic size are explained mainly in terms of their influence on the "chemical cooling" rate which is determined by the polymerization rate of silica and the solubility of NaPSS in the reacting solution.
引用
收藏
页码：2518 / 2530
页数：13
相关论文
共 25 条
[1]  
[Anonymous], 1979, CHEM SILICA
[2]   SOL-GEL TRANSITION IN SIMPLE SILICATES .2. [J].
BRINKER, CJ ;
KEEFER, KD ;
SCHAEFER, DW ;
ASSINK, RA ;
KAY, BD ;
ASHLEY, CS .
JOURNAL OF NON-CRYSTALLINE SOLIDS, 1984, 63 (1-2) :45-59
[3]  
CAHN JW, 1965, PHYS CHEM GLASSES, V6, P181
[4]  
Chung Y. J., 1990, BETTER CERAMICS CHEM, P981
[5]  
FLORY PJ, 1971, PRINCIPLES POLYM CHE
[6]   TIME-RESOLVED LIGHT-SCATTERING-STUDIES ON KINETICS OF PHASE-SEPARATION AND PHASE DISSOLUTION OF POLYMER BLENDS .1. KINETICS OF PHASE-SEPARATION OF A BINARY MIXTURE OF POLYSTYRENE AND POLYVINYL METHYL-ETHER) [J].
HASHIMOTO, T ;
KUMAKI, J ;
KAWAI, H .
MACROMOLECULES, 1983, 16 (04) :641-648
[7]   LATE STAGE SPINODAL DECOMPOSITION OF A BINARY POLYMER MIXTURE .1. CRITICAL TEST OF DYNAMIC SCALING ON SCATTERING FUNCTION [J].
HASHIMOTO, T ;
ITAKURA, M ;
HASEGAWA, H .
JOURNAL OF CHEMICAL PHYSICS, 1986, 85 (10) :6118-6128
[8]  
HASHIMOTO T, 1989, POLYM COMMUN, V30, P177
[9]  
Hood H. P., 1940, US Patent, Patent No. [2,215,039, 2215039]
[10]   DEVELOPMENT OF MODULATED STRUCTURE DURING SOLUTION CASTING OF POLYMER BLENDS [J].
INOUE, T ;
OUGIZAWA, T ;
YASUDA, O ;
MIYASAKA, K .
MACROMOLECULES, 1985, 18 (01) :57-63
123