Microhardness and Surface Charge Correlation in Resol Phenolic Resin/Organoclay Composites

Research Area: Volume 7,Issue 3, May 2018 Year: 2018
Type of Publication: Article Keywords: Composite, Microhardness, Organoclay, Resol Phenolic Resin, Surface Charge
Authors:
  • Ferda Mindivan
  • Ahmet Gürses
Journal: IJEIR Volume: 7
Number: 3 Pages: 187-191
Month: May
ISSN: 2277-5668
Abstract:
For the preparation of resol phenolic resin/ organoclay composites (ROC), the resol phenolic resin (RPR) in which the synthesis conditions were 50°C and 1.3 F/P (Formaldehyde/Phenol) ratio was used. At the synthesis of organoclay (OC), a surfactant, cetyltrimethylammonium bromide (CTAB), was used as the modifier. For this, the Na Montmorillonite clay (MMT) with 2:1 layered structure was modified by using the aqueous solutions of CTAB at its different initial concentrations, and surface charge of the OC particles was controlled by zeta potential measurements. The in situ polymerization technique was used in the preparation of composites. The synthesized ROC composites were characterized morphologically and structurally by using technique as optical microscope (OM). Also, with microhardness analysis, the change of mechanical properties of the ROC composites and with the sign and density of the surface charge of the OC was investigated. The results demonstrated that the mechanical behavior of the ROC composites prepared was dependent on the sign and density of the surface charge of OC layers

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