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

  • Xiao-Qiong Ren
  • Yue-Fei Zhang
Article

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.

Keywords

Aliphatic dicarboxylic acids Nucleating agents Polypropylene Crystalline 

Notes

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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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2018

Authors and Affiliations

  1. 1.School of Chemistry and Biological EngineeringChangsha University of Science and TechnologyChangshaChina

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