首页|Synthesis and characterization of organomodified Na-MMT using cation and anion surfactants
Synthesis and characterization of organomodified Na-MMT using cation and anion surfactants
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The Sodium Montmorillonite (Na-MMT) is not susceptible to polymer due to its organophilic character and low basal spacing. The primary objective of this study was to improve Na-MMT platelets separation by organically modifying it with cation and anion exchanges using Cetyl trimethyl ammonium bromide (CTAB) and Sodium dodecyl sulfate (SDS) respectively.Basal spacing, presence of functional groups, Zeta-potential with particle size analysis and thermal stability of the Organomodified Na-MMT (OMMT)were characterized using XRD, FTIR, zeta-potential analyzer and TGA respectively. The basal spacing of CTAB modified OMMT increased to 19.5 (A) from 11.0(A)which corresponds to the basal spacing of Na-MMT.The SDS modified OMMT did not show any increase in the basal spacing. FTIR spectra of CTAB modified NaMMT illustrated the attachment of CTAB functional groups to Na-MMT, while the same was absent in the case of SDS modified Na-MMT. The zeta-potential of Na-MMT shifted from -24.88 mV to 15.66 mV in the case of CTAB modified Na-MMT and 12.49 mV for SDS modified Na-MMT, indicating a greater surface potential of the modified nanoclay. The TGA showed greater weight loss for CTAB modified Na-MMT than that for Na-MMT, indicating the effective Na+ ion exchange with alkyl amines.
Na-MMTCTABSDSXRDFTIRzeta-potential
K. R. Vishnu MAHESH、H. N.Narasimha MURTHY、B.E. KUMARASWAMY、N. RAGHAVENDRA、R. SRIDHAR、M. KRISHNA、Niranjan PATTAR、Ratna PAL、B.S. Sherigara
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Department of P.G Studies and Research in Industrial Chemistry,Kuvempu University, Shankaraghatta, Shimoga 577451, India
Department of Mechanical Engineering, R V College of Engineering,Bangalore 560059, India
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