Layered double hydroxides(LDH) are a class of ionic lamellar compounds made up of positively charged layered hydroxides with an interlayer region containing charge compensating anions. LDH can be introduced as precursor into polymer matrix to prepare LDH/polymer nanocomposites. The properties of the polymer matrix can be strengthened as the addition of LDH, and nanocomposites have shown excellent performances and development potentials in many fields. In this paper, the preparation methods of LDH/polymer nanocomposites are reviewed, such as blending, intercalation, in-situ, exfoliation/adsorption, layer-by-layer(LBL) assembly. Then the applications of the LDH/polymer nanocomposites are also summarized, such as flame retardant, gas barrier, infrared absorption, controlled release, adsorption. Finally, development trends of research direction and research field of the LDH/polymer nanocomposites are prospected.
Contents
1 Introduction
2 Structure and properties of LDH
2.1 Structure of LDH
2.2 Properties of LDH
3 Preparation methods of LDH/polymer nanocomposite
3.1 Blending method
3.2 Intercalation method
3.3 In-situ method
3.4 Exfoliation/adsorption method
3.5 Reconstruction method
3.6 Layer-by-layer(LbL) assembly
3.7 Spin-coating method
4 The applications of LDH/polymer nanocomposite
4.1 Flame retardant material
4.2 Ultraviolet and infrared absorption material
4.3 Biomedical material
4.4 Water treatment material
4.5 Gas barrier material
4.6 Luminescent material
4.7 Energy storage materials
5 Conclusion