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Zepeng Zhang,Guanzheng Zhuang,Maguy Jaber,Jiahua Gao,Shanmao Peng 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.56 No.-
This work aims to reveal the differences of structures and properties between organo-montmorillonite(OMt) and organo-palygorskite (OPal) in oil-based drillingfluids. Organoclays are prepared in aqueoussolution and characterized by XRD, SEM and TEM. Surfactants can intercalate into the interlayer space ofMt while they coat only on the palygorskite surface. OMt can form “house of cards” structure while OPalforms “haystack” structure. Temperature rising promotes network structure and rheological properties oforganoclays in oil. The decline of rheological properties at high temperature is mainly caused by thedissolution of surfactants into oil, instead of thermal decomposition.