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Thermal behavior of poly (ethylene terephthalate)/SiO2/TiO2 nano composites prepared via in situ polymerization

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Abstract

The PET/SiO2/TiO2 composites were prepared via in situ polymerization. The effect of nano SiO2 and TiO2 content on crystallization behavior and thermal stability of PET was investigated by differential scanning calorimeter (DSC), X-ray diffraction (XRD), and thermogravimetry. The morphology of SiO2 and TiO2 particles and their dispersion in PET were studied by scanning electron microscope. The addition of SiO2 and TiO2 nano particles affects the thermal stability and flame property of PET and the effect depends on their content. It also affects the perfect degree of PET crystal. From DSC data analysis, crystallization temperature and enthalpy value reduce with SiO2 and TiO2 nano particles, but they increase with increasing SiO2 and TiO2 loading. A low content of SiO2 and TiO2 nano particles will decrease the degree of crystallinity, but enough amounts of them will increase the degree of crystallinity of PET because of heterogeneous nucleating effect of the particles. The degree of crystallinity calculated based on XRD data also shows this phenomenon. From XRD results analysis, it is also found that the average grain size of PET decreases with a little of SiO2 and TiO2 nano particles, but it increases with increasing content of particles.

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Acknowledgments

Authors appreciate the financial support of (1) the natural science foundation of Chongqing Municipal Science and Technology Commission, China (Grant No. CSTC2013JCYJA50029), (2) the Local Fund for Chongqing University of Arts and Sciences (Grant No. R2012CH08), and (3) the Science and Technology Project Affiliated to the Education Department of Chongqing Municipality (KJ1401122).

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Authors and Affiliations

  1. Chongqing Key Laboratory of Environmental Materials and Remediation Technologies, Chongqing University of Arts and Sciences, No. 319 Honghe Road, Yongchuan, 402160, Chongqing, China

    Zhaozan Xu, Jiang Zhu & Xiaoqing Liao

  2. Chongqing Key Laboratory of Micro/Nano Materials Engineering and Technology, Chongqing University of Arts and Sciences, No. 319 Honghe Road, Yongchuan, 402160, Chongqing, China

    Zhaozan Xu, Xiaoqing Liao & Haitao Ni

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  1. Zhaozan Xu
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  2. Jiang Zhu
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  3. Xiaoqing Liao
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  4. Haitao Ni
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Correspondence to Jiang Zhu or Haitao Ni.

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Xu, Z., Zhu, J., Liao, X. et al. Thermal behavior of poly (ethylene terephthalate)/SiO2/TiO2 nano composites prepared via in situ polymerization. J IRAN CHEM SOC 12, 765–770 (2015). https://doi.org/10.1007/s13738-014-0536-1

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  • DOI: https://doi.org/10.1007/s13738-014-0536-1

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