Abstract :
Layered double hydroxides ( LDH) are a class of ionic lamellar compounds made up of positivelycharged
layered hydroxides w ith an inter layer region containing charge compensating anions. LDH can beintroduced as
precursor into polymer matrix to prepare LDH / polymer nanocomposites. The properties of thepolymer matrix can be strengthened as the addition of LDH,and nanocomposites have show n excellentperformances and development potentials in many fields.In this paper,the preparation methods of LDH / polymer nanocomposites are review ed,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 asflame retardant, gas barrier, infrared absorption,controlled release,adsorption. Finally ,development trends ofresearch direction and research field of the LDH / polymer nanocomposites are prospected.
Keyword :
layered double hydroxides; polymer; nanocomposites; preparation methods; application andproperties