Preparation method for organic-inorganic layered compounds including fibrous materials by the reaction of Zn(OH)2 with organic compounds

Abstract

A preparation method of surface modified inorganic layered compounds including fibrous materials was established by the reaction of amorphous Zn(OH) ₂ with organic oxychlorides. The resultant layer structures were similar to those of the layered double hydroxides (LDHs). Although the LDH layers have positive charges the layers of the reaction products obtained here are uncharged. IR spectra indicate that hydroxyl groups reacted with the organic oxychlorides, and new peaks assigned to RCO ₂ -Zn bonds appeared around 1400 and 1550 cm ^–1 and 40-98% of hydroxyl groups were reacted. Interlayer spacings of the reaction products of Zn(OH) ₂ with dioxychlorides were 0.71-1.48 nm, and those of Zn(OH) ₂ with monooxychlorides were 1.19-2.67 nm and depended on the length of organic compounds. SEM images showed that the reaction products of Zn(OH) ₂ with organic oxychlorides had plate-like morphology similar to LDHs. However, the reaction product of Zn(OH) ₂ with benzoyl chloride was fibrous.