JOURNAL ARTICLE

Influence of the longest ethylene and isotactic propylene sequences on crystallization elution fractionation of ethylene/propylene copolymers.

  • Published In: Canadian Journal of Chemical Engineering, 2023, v. 101, n. 9. P. 5420 1 of 3

  • Database: Applied Science & Technology Source Ultimate 2 of 3

  • Authored By: Voraruth, Voradon; Anantawaraskul, Siripon; Mehdiabadi, Saeid; Soares, João B. P. 3 of 3

Abstract

Crystallization elution fractionation (CEF) is the newest crystallization‐based technique for estimating the chemical composition distribution of ethylene/1‐olefin copolymers. Understanding the separation mechanism of CEF for ethylene/propylene copolymers over their full compositional range is challenging because the crystallizabilities of the copolymer chains depend on the longest ethylene sequence and on longest isotactic propylene sequence. We developed a mathematical model to describe the CEF mechanism for ethylene/propylene copolymers over the entire compositional range using population balances for the crystallization and dissolution stages. The joint distribution of longest ethylene and isotactic propylene sequences determines how the copolymer populations crystallize and dissolve. The model was validated with experimental CEF profiles of ethylene/propylene copolymers varying from pure ethylene to propylene homopolymers. [ABSTRACT FROM AUTHOR]

Additional Information

  • Source:Canadian Journal of Chemical Engineering. 2023/09, Vol. 101, Issue 9, p5420
  • Document Type:Article
  • Subject Area:Chemistry
  • Publication Date:2023
  • ISSN:00084034
  • DOI:10.1002/cjce.25030
  • Accession Number:169783436
  • Copyright Statement:Copyright of Canadian Journal of Chemical Engineering is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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