Preparation of composites of laponite with alginate and alginic acid polysaccharides

被引：22

作者：

Bandeira, Lucimara C. ^{[1
]}

Calefi, Paulo S. ^{[1
]}

Ciuffi, Katia J. ^{[1
]}

de Faria, Emerson H. ^{[1
]}

Nassar, Eduardo J. ^{[1
]}

Vicente, Miguel A. ^{[2
]}

Trujillano, Raquel ^{[2
]}

机构：

[1] Univ Franca, BR-14404600 Franca, SP, Brazil

[2] Univ Salamanca, Dept Quim Inorgan, E-37008 Salamanca, Spain

来源：

POLYMER INTERNATIONAL | 2012年 / 61卷 / 07期

基金：

巴西圣保罗研究基金会;

关键词：

laponite; 3-aminopropyltriethoxysilane; alginate polysaccharide; alginic acid polysaccharide; clay-organic composites; CONTROLLED-RELEASE; LAYERED SILICATES; REMOVAL; SURFACE; POLYMER;

D O I：

10.1002/pi.4196

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 [高分子化学与物理];

摘要：

Polymer/clay composites have several uses in fields such as engineering, agriculture, ceramics, surface coatings, absorbent materials, pharmaceuticals or catalysis. Polysaccharides, such as alginate and its acid derivatives, are biocompatible and biodegradable polymers, effective in the production of adsorbent systems, for encapsulation and controlled release of active ingredients such as drugs and fertilizers. In this work, alginate polysaccharide and alginic acid were used to form composites with laponite, both with the original clay or with clay previously functionalized with 3-aminopropyltriethoxysilane. The properties of the composites prepared from laponite or functionalized laponite and alginic acid or alginate were compared. The interaction of laponite with alginic acid leads to composites with strong disorder in the clay structure. In all cases, composites with high contents of polysaccharides, with good thermal and mechanical properties, are obtained. Laponite-derived composites showed high adsorption capability for Cr(III) and methylene blue from aqueous medium. Copyright (c) 2012 Society of Chemical Industry

引用

页码：1170 / 1176

页数：7

共 25 条

[1]

New synthesis strategies for effective functionalization of kaolinite and saponite with silylating agents [J].