Influences of supported β-nucleating agent on crystallization and melting behaviors of polypropylene

Z. Zhang, C. Wang, Z Yang, K. Mai

Research output: Contribution to journalArticle

Abstract

A nano-calcium carbonate supported calcium pimelate (CaHA) β-nucleating agent and β-nucleated PP was prepared. The influences of the content of support nano-calcium carbonate and supported β-nucleating agent on crystallization behaviors, melting characteristics and the content of β-PP were investigated by differential scanning calorimeter (DSC) and wide-angle X-ray diffraction (WAXD) analyses, and compared with calcium pimelate (CaHA) nucleated PP. The results indicated that PP nucleated by supported β-nucleating agent showed higher crystallization temperature than that of CaHA nucleated PP. The crystallization temperature and melting temperature of PP nucleated by supported β-nucleating agent increased with increasing the content of supported β-nucleating agent and decreased with increasing the content of the support nano-calcium carbonate. The content of β-iPP in the PP nucleated by supported β-nucleating agent was higher than that of CaHA nucleated PP. Further more, the content of β-PP was independent on the content of supported β-nucleating agent and nano-calcium carbonate.
Original languageUndefined/Unknown
Pages (from-to)51-55
Number of pages5
JournalZhongshan Daxue Xuebao/Acta Scientiarum Natralium Universitatis Sunyatseni
Volume48
Issue number3
Publication statusPublished - May 2009

Keywords

  • β-nucleating agent
  • β-polypropylene
  • Crystallization
  • Melting

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