International Journal of Materials Engineering and Technology
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Abstract: Layered double
hydroxide (LDH) modified by part organic modification was successfully prepared
via co-precipitation method. In order to study the influence of inorganic anions
on the morphology and related properties of pure LDH and polypropylene
(PP)/layered double hydroxide composite, the molar ratios of changed in the range of 0-¥. The crystal morphological structures, thermal and
mechanical properties of PP/LDH and LDH have been studied by X-ray diffraction (XRD),
transmission electron microscopy (TEM), thermogravimetric analysis (TGA), and
mechanical measurements. The XRD data show that LDH is difficultly exfoliated in
PP matrix when LDH contains sulfate. The TEM images indicate that LDH containing
sulfate can better keep hexagonal structures in the surfactant. The
thermogravimetric analysis (TGA) data show that the thermal degradation
temperature of the PP/LDH containing and is enhanced obviously when 50%
weight loss as a point of comparison. The data from the mechanical test shows
that the tensile strength of the PP/LDH containing and composites
with 5wt% LDH loading is the highest among the samples, and elongation at break
of all the PP/LDH samples is approximately 68%.
