Research Information System
3rd International Cosmetic Congress organized by KUAD, Main Theme: Minimalist Cosmetics, 7-8 Nov. 2019, Proceedings Book, , Antalya, Turkey, 7 - 08 November 2019, pp.117-120
ABSTRACT
Clay minerals are
alumina silicate compounds derived from nature. Montmorillonite (MMT) type clay
is a mineral with a high cation exchange capacity that has a layered structure.
The surface of the layers is negatively charged and can be converted from
hydrophilic to organophilic structure by an ion-exchange reaction using
cationic surfactants such as alkyl ammonium or alkyl phosphonium type.
Organo-montmorillonites have the properties as thickener, binder, dispersant,
emulsion stabilizer, opacifier and they are effective against acne, and have a
high oil absorption capacity. These properties enable organic clays to be used in
a wide variety of cosmetics and personal care products such as make-up
materials (colorful lipsticks, powdered pancake type foundations), sunscreens,
skin care products, nail lacquers, bath products, lip-protecting sticks and the
like. This study includes the preparation of organic and organic-inorganic
montmorillonite type clays using cationic and anionic surfactants and heavy
metal ions (copper-zinc). The purpose of the study was to evaluate the effect of
the different types of ions on the surface charge of the MMT platelets and on their
interfacial adsorption. Zeta potential and X-ray diffraction (XRD) measurements
were used in order to find out in which applications these organo-inorgano-montmorillonites
prepared with different modifications might be used. While zeta potential
analysis gives information about the adsorption properties of the outer surface
of MMT platelets, XRD analysis gives information about the structure of organic/inorganic
ions adsorbed between the layers.