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Synergistic effect of organic phosphate salt nucleating agents and inorganic fillers on isotactic polypropylene

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Abstract

The development of high-performance and low-cost composite nucleating agents has become a pioneering point in expanding the application of isotactic polypropylene (iPP). To this end, this article used a physical blending method to mix nucleating agent organic phosphate salt (LPN-9081) with inorganic fillers such as wollastonite and talc powder. Change the ratio of nucleated mineral-reinforced composition LPN-9081/wollastonite (L/WO) and LPN-9081/talc powder (L/Tac) to study their effects on the crystallization, melting behavior, and mechanical properties of iPP. And a preliminary exploration was conducted on its mechanism. The results suggest that the nucleated mineral-reinforced composition more significantly enhance the crystallization temperature, increasing it by up to 10 °C. Furthermore, it was observed that the mechanical properties of iPP were significantly improved via the synergistic effect of LPN-9081 and the inorganic fillers. In the iPP/L/WO system, the addition of the composite nucleating agent improved rigidity by 146% while maintaining toughness. Similarly, compared with iPP system, the iPP/L/Tac system has improved its rigidity by 107% and toughness by 50%. Using the nucleated mineral-reinforced compositions mentioned above can reduce industrial expenses, while increases the rigidity and toughness of iPP, expanding its potential of applications.

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Acknowledgements

This work was financially supported by Natural Science Foundation of Changsha (No. kq2202184) and Hunan Provincial Science & Technology Department (No. 2021GK5007).

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Authors and Affiliations

  1. School of Chemistry and Chemical Engineering, Changsha University of Science & Technology, Changsha, 410114, China

    Xiang Wu, Zhengxin Li, Xinjie Dai, Yan Li, Jin-Rong Zhong, Jinlin Tan, Cui-Hong Lu & Yue-Fei Zhang

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  2. Zhengxin Li
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Wu, X., Li, Z., Dai, X. et al. Synergistic effect of organic phosphate salt nucleating agents and inorganic fillers on isotactic polypropylene. J Therm Anal Calorim 148, 13375–13384 (2023). https://doi.org/10.1007/s10973-023-12634-y

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