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The β-nucleating effect of wollastonite-filled isotactic polypropylene composites

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Abstract

Wollastonite (W) with β-nucleating effect (β-W100) for iPP crystallization was obtained through reaction between Ca2+ in wollastonite and pimelic acid (PA) and the β-iPP composites filled by different content of β-W100 were prepared. The effect of PA and wollastonite contents on β-nucleation, crystallization and melting behavior, and crystalline morphology of W and β-W100-filled iPP composites was investigated by differential scanning calorimetry (DSC), wide-angle X-ray diffraction, and polarizing optical microscopy. The results indicated that incorporation of W and β-W100 increase the crystallization peak temperature of iPP due to its heterogeneous nucleating ability. And iPP/W composites predominantly crystallize in the α-phase iPP and iPP/β-W100 composites in the β-phase iPP. The results of DSC multi-scanning in same and different melting temperatures showed that β-W100 not only has strong heterogeneous β-nucleating effect but also DSC multi-scanning in same and different melting temperatures has no influence on the heterogeneous β-nucleating effect of β-W100. The β-iPP containing high wollastonite content with high β-phase content can be easily prepared.

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Acknowledgments

The project was supported by Natural Science Foundation of China (Grant Nos. 50873115, 51173208), Doctoral Fund of Ministry of Education of China (Grant No. 200805580011), China Postdoctoral Science Foundation (Grant No. 20100480803), and Science Foundation of Guangdong Province (Grant No. S2011020001212).

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Authors and Affiliations

  1. Materials Science Institute, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, 510275, People’s Republic of China

    Qian Ding, Zishou Zhang, Chunguang Wang, Juan Jiang, Gu Li & Kancheng Mai

  2. Key Laboratory of Polymeric Composites and Functional Materials, the Ministry of Education, Key Laboratory of Designed Synthesis and Application of Polymer Material of Guangdong Province, Sun Yat-sen University, Guangzhou, People’s Republic of China

    Qian Ding, Zishou Zhang, Chunguang Wang, Juan Jiang, Gu Li & Kancheng Mai

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  1. Qian Ding
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  2. Zishou Zhang
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  3. Chunguang Wang
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  4. Juan Jiang
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Correspondence to Kancheng Mai.

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Ding, Q., Zhang, Z., Wang, C. et al. The β-nucleating effect of wollastonite-filled isotactic polypropylene composites. Polym. Bull. 70, 919–938 (2013). https://doi.org/10.1007/s00289-012-0896-6

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  • DOI: https://doi.org/10.1007/s00289-012-0896-6

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