ISSN 1070-4272, Russian Journal of Applied Chemistry, 2016, Vol. 89, No. 12, pp. 2035−2042. © Pleiades Publishing, Ltd., 2016.
The text was submitted by the authors in English.
Organic pigments are widely used in water building
coating, emulsion paint as one of the important ingredients
. Among these organic pigments, yellow pigment’s
demands have growing rapidly for its high color shade
and strength, high brightness, high flow ability .
However, the commonly used organic yellow pigment-
P.Y.12 is limited for further application for its low color
strength and poor thermal-stability . In addition, the
easy aggregation of the organic pigment particles results
in its poor ﬂ ow ability .
In recent years, a lot of modiﬁ cation have been carried
out to improve the performance of organic pigments .
Among these methods, hybrid pigment was one of the
most effective methods by coating the organic pigments
on the surface of inorganic compounds. Different inor-
ganic core have different effect on the hybrid pigments
[6–8]. Hybrid pigments mixed with silica and organic
pigments could improve the thermal stability and water
dispersion but reduce the color shade and light comparing
with P.Y.12 [9, 10].
In the present work, three kinds of inorganic-organic
hybrid yellow pigments were fabricated by encapsulation
of pigment yellow 12 on the surface of white carbon
black, microsilica, and palygorskite, respectively. Effect
of inorganic cores on the morphology and structure
of hybrid pigments were analyzed using nanoparticle
analyzer, Fourier transforms infrared spectroscopy, and
X-ray diffraction. The dye properties of these hybrid
pigments such as color strength, lightness, and yellow
hue index were also investigated. Figure 1 shows the
schematic diagram of preparation of hybrid pigments
White carbon black (the average particle size is
60 nm), microsilica (the average particle size is 250 nm),
and palygorskite (the average particle size is 350 nm)
were supplied by Tianjin Chemical Reagents Company of
Effect of Inorganic Cores on Dye Properties
of Inorganic-organic Hybrid Pigments Yellow 12
, Fangming Su
, Sen Zhu
, and Lijuan Liu
School of Material Science and Engineering, Tianjin Chengjian University, Tianjin 300384 ,China
Department of Chemistry, School of Science, Tianjin Chengjian University, Tianjin 300384 ,China
*e-mail: email@example.com; firstname.lastname@example.org
Received December 12, 2016
Abstract—Some inorganic-organic hybrid pigments were fabricated by depositing pigment yellow 12(P.Y.12)
on the surface of three inorganic cores with different particle size (white carbon black,microsilica,palygorskite).
Effect of inorganic cores on the morphology and structure of the hybrid pigments were systematically investigated
by nanoparticle analyzer, Fourier transforms infrared spectroscopy, and X-ray diffraction. Results showed that
all three inorganic cores were encapsulated by the organic pigment. The particle size of hybrid pigments was all
smaller and had narrower diameter scatter than the original pigment. The water dispersion and ﬂ ow ability of these
fabricated pigments were slightly improved. Thermal and UV-Vis analyses showed that the hybrid pigments had
better thermo- and photo-stabilities. Additionally, the properties of the hybrid pigments including color strength,
lightness, and yellow hue index were also improved and the modiﬁ ed pigment with white carbon black had the
best coloring performance and better heat resistance than original P.Y.12.