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Effects of different metal salts of aliphatic dicarboxylic acids on the formation of β-crystalline form in isotactic polypropylene

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Abstract

The effects of barium, calcium and zinc salts of the aliphatic dicarboxylic acids on the nucleation ability and formation of β-crystalline form in isotactic polypropylene (iPP) were investigated. The results showed that barium, calcium and zinc salts of aliphatic dicarboxylic acid were related to the number of carbon atoms in the acids, and carbon atomic numbers of 5–8 had good nucleation ability for iPP except calcium adipate and zinc pimelate, in which barium glutarate, calcium suberate and zinc suberate were highly efficient β-nucleating agents for iPP. In addition, the optimal addition amounts of barium glutarate, calcium suberate and zinc suberate were 0.1 mass%, 0.1 mass% and 0.15 mass%, respectively, and the relative contents of β-crystals reached 0.9561, 0.9351 and 0.9447, respectively. The results of mechanical and thermal properties with the optimal addition amount showed that barium glutarate, calcium suberate and zinc suberate improved the toughness and thermal properties but decreased the rigidity of iPP.

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Acknowledgements

This work was financially supported by National Natural Science Foundation of China (Grant No. 21376031) and Scientific Research Fund of Hunan Provincial Education Department (Grant No. 16A004).

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  1. School of Chemistry and Biological Engineering, Changsha University of Science and Technology, No. 960, South Wanjiali Road, Changsha, 410114, China

    Xiao-Qiong Ren & Yue-Fei Zhang

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  1. Xiao-Qiong Ren
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  2. Yue-Fei Zhang
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Correspondence to Yue-Fei Zhang.

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Ren, XQ., Zhang, YF. Effects of different metal salts of aliphatic dicarboxylic acids on the formation of β-crystalline form in isotactic polypropylene. J Therm Anal Calorim 137, 563–573 (2019). https://doi.org/10.1007/s10973-018-7958-4

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  • DOI: https://doi.org/10.1007/s10973-018-7958-4

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