Synergistic nucleation effect of calcium sulfate whisker and β-nucleating agent dicyclohexyl-terephthalamide in isotactic polypropylene

  • Yue-Fei ZhangEmail author
  • Xiang-Feng Lin
  • Yan Li
  • Bin He


The crystallization and melting behaviors and mechanical properties of isotactic polypropylene (iPP) containing a certain amount of stearic acid-modified calcium sulfate whiskers (S-CSW) and dicyclohexyl-terephthalamide (TMB-5) were investigated. The results revealed that S-CSW and TMB-5 had obvious synergistic nucleation effect in iPP. At the optimum addition concentration, the crystallization peak temperature of nucleated iPP increased by 8.1 °C compared with that of pure iPP, and the relative content of β-crystals in iPP reached to 0.9012. The impact strength, tensile strength and flexural modulus of iPP increased by approximately 61.8%, 1.71% and 26.1%, respectively, which were obviously better than that of iPP nucleated with S-CSW or TMB-5 independently.


Compound nucleating agent Calcium sulfate whiskers Mechanical properties Isotactic polypropylene Synergistic effect 



This work was supported by Hunan Provincial Natural Science Foundation of China (No. 2019JJ40294) and the Research Innovation Program for College Graduates of Changsha University of Science and Technology (No. CX2018SS17).


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  1. 1.School of Chemistry and Food EngineeringChangsha University of Science and TechnologyChangshaPeople’s Republic of China

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