Intercalation of Cocamide Diethanolamine into Swellable Clay by Solid-State Process

Coconut fatty acid diethanolamine (cocamide-DEA (CDEA)), CH3(CH2)16CON(CH2CH2OH)2 was intercalated into montmorillonite using both solution and solid-state reaction methods. In a typical process, the CDEA aqueous mixed with (Kunipia-F) suspension, which resulted in CDEA–montmorillonite layer complex basal spacing of 13.8 Å. A also easily prepared by solid–solid method. mixture Na–montmorillonite ground at ambient temperature. The increased to approximately 44 Å after grinding for 30 min. Upon washing, decreased 10 Å, close that pristine owing deintercalation molecules. composite starting from protonated 13.5 upon indicating parallel monolayer arrangement molecules between silicate layers. This finding strongly suggests acid–base intralayer complexation is responsible intercalation reaction.