JOURNAL ARTICLE

New nucleating agents for shear-induced crystallization of polypropylene.

  • Published In: Physics of Fluids, 2024, v. 36, n. 12. P. 1 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Zhang, Ziyue; Deshmukh, Yogesh Sheshrao; Al-Sharif, Yasir; Doufas, Antonios K.; Hatzikiriakos, Savvas G. 3 of 3

Abstract

This article investigates the effects of temperature and shear flow on the crystallization kinetics of a random copolymer polypropylene (RCP) containing sorbitol-based nucleating agents (NAs) with varying degrees of polarity. Using differential scanning calorimetry (DSC) and shear rheometry, the study identifies distinct "quiescent" and "shear-induced" crystallization regimes, with the transition shear rate increasing alongside the polarity of the nucleating agents. Among the three sorbitol NAs tested, the one with the lowest polarity (CR1) consistently exhibited the fastest crystallization kinetics under both isothermal and shear conditions. The findings highlight the influence of nucleating agent polarity and shear rate on polypropylene crystallization behavior, which is relevant for optimizing polymer processing and material properties.

Additional Information

  • Source:Physics of Fluids. 2024/12, Vol. 36, Issue 12, p1
  • Document Type:Article
  • Subject Area:Chemistry
  • Publication Date:2024
  • ISSN:1070-6631
  • DOI:10.1063/5.0251452
  • Accession Number:181973924
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