China Plastics ›› 2025, Vol. 39 ›› Issue (7): 93-101.DOI: 10.19491/j.issn.1001-9278.2025.07.015

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Effect of calcium salt nucleating agent on non⁃isothermal crystallization kinetics and crystal form transformation of polybutene-1

LI Zihan(), SONG Chaobo, ZHANG Jinjin, LIANG Dali, LIN Huajie   

  1. Sinopec Ningbo New Materials Research Institute Company Limited,Ningbo 315207,China
  • Received:2024-07-31 Online:2025-07-26 Published:2025-07-22

Abstract:

This study investigated calcium salt nucleating agents for enhancing the crystallization and mechanical properties of polybutene⁃1 (PB⁃1), with particular focus on accelerating the crystal form II⁃I transformation. Three selected calcium salt nucleators were evaluated using differential scanning calorimetry to analyze thermodynamic crystallization behavior and non⁃isothermal crystallization kinetics. Results demonstrated significant improvements in crystallization properties for all modified PB⁃1 composites. Powder X⁃ray diffraction analysis revealed that calcium salt nucleators markedly accelerated the phase transition from form II to form I crystals. Furthermore, mechanical property testing showed substantial enhancement in PB⁃1 performance with calcium nucleator incorporation. These findings provide valuable insights for developing high⁃performance PB⁃1 materials through nucleating agent modification.

Key words: polybutene?1, xcalcium salt nucleating agent, non?isothermal crystallization, crystallization kinetics, polymorphic transformation

CLC Number: