Int. J. Mol. Sci. 2011, 12(3), 1756-1766; doi:10.3390/ijms12031756
Article

The Effect of Zn-Al-Hydrotalcites Composited with Calcium Stearate and β-Diketone on the Thermal Stability of PVC

1email, 2email, 2,* email and 2email
Received: 26 January 2011; in revised form: 9 February 2011 / Accepted: 7 March 2011 / Published: 8 March 2011
(This article belongs to the Section Material Sciences and Nanotechnology)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: A clean-route synthesis of Zn-Al-hydrotalcites (Zn-Al-LDHs) using zinc oxide and sodium aluminate solution has been developed. The as-obtained materials were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and scanning electron microscopy (SEM). The effects of metal ions at different molar ratios on the performance of hydrotalcites were discussed. The results showed that the Zn-Al-hydrotalcites can be successfully synthesized at three different Zn/Al ratios of 3:1, 2:1 and 1:1. Thermal aging tests of polyvinyl chloride (PVC) mixed with Zn-Al-LDHs, calcium stearate (CaSt2) and β-diketone were carried out in a thermal aging test box by observing the color change. The results showed that Zn-Al-LDHs can not only enhance the stability of PVC significantly due to the improved capacity of HCl-adsorption but also increase the initial stability and ensure good-initial coloring due to the presence of the Zn element. The effects of various amounts of Zn-Al-LDHs, CaSt2 and β-diketone on the thermal stability of PVC were discussed. The optimum composition was determined to be 0.1 g Zn-Al-LDHs, 0.15 g CaSt2 and 0.25 g β-diketone in 5 g PVC.
Keywords: Zn-Al-LDHs; polyvinyl chloride; stabilizer
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MDPI and ACS Style

Tong, M.; Chen, H.; Yang, Z.; Wen, R. The Effect of Zn-Al-Hydrotalcites Composited with Calcium Stearate and β-Diketone on the Thermal Stability of PVC. Int. J. Mol. Sci. 2011, 12, 1756-1766.

AMA Style

Tong M, Chen H, Yang Z, Wen R. The Effect of Zn-Al-Hydrotalcites Composited with Calcium Stearate and β-Diketone on the Thermal Stability of PVC. International Journal of Molecular Sciences. 2011; 12(3):1756-1766.

Chicago/Turabian Style

Tong, Mengliang; Chen, Hongyan; Yang, Zhanhong; Wen, Runjuan. 2011. "The Effect of Zn-Al-Hydrotalcites Composited with Calcium Stearate and β-Diketone on the Thermal Stability of PVC." Int. J. Mol. Sci. 12, no. 3: 1756-1766.

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