Preparation and characterization of phosphonium montmorillonite with enhanced thermal stability

被引：184

作者：

Patel, Hasmukh A. ^{[1
]}

Somani, Rajesh S. ^{[1
]}

Bajaj, Hari C. ^{[1
]}

Jasra, Raksh V. ^{[1
]}

机构：

[1] Cent Salt & Marine Chem Res Inst, Silicates & Catalysis Discipline, Bhavnagar 364002, Gujarat, India

来源：

APPLIED CLAY SCIENCE | 2007年 / 35卷 / 3-4期

关键词：

montmorillonite; organoclays; nanocomposites; thermal stability; phosphonium; intercalation;

D O I：

10.1016/j.clay.2006.09.012

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Quaternary phosphonium cations (hexadecyl tributyphosphonium; tetradecyl tributylphosphonium; tetraphenylphosphonium; methyl triphenylphosphonium; ethyl triphenylphosphonium and propyl triphenylphosphonium) were intercalated into montmorillonite (MMT) rich bentonite of Indian origin, by ion exchange reaction. The phosphonium MMT were characterized by Fourier transform infrared spectroscopy (FTIR), powder X-ray diffraction analysis (PXRD), particle size distribution (PSD) and thermogravimetric analysis (TGA). The phosphonium cations significantly influenced the particle size distribution. With longer alkyl chain finer particles were formed. The tetrabutylphosphonium and tetraphenylphosphonium MMT showed enhanced thermal stability (300-400 degrees C) and may be potentially useful materials for melt processing of polymer/layered silicates nanocomposites. (C) 2006 Elsevier B.V. All rights reserved.

引用

页码：194 / 200

页数：7

共 23 条

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