Mathematical Modeling of Crystallization Elution Fractionation of Ethylene/1-Octene Copolymers

作者：Chokputtanawuttilerd Nuttawat; Anantawaraskul Siripon^*; Inwong Nantiya; Soares Joao B P

来源：Macromolecular Chemistry and Physics, 2015, 216(6): 621-635.

DOI：10.1002/macp.201400518

• chemical composition distribution
• crystallization elution fractionation
• ethylene
• 1-olefin copolymers
• modeling
• polyethylene

Crystallization elution fractionation (CEF) is a relatively new polyolefin characterization technique used to estimate the chemical composition distribution (CCD) of semicrystalline copolymers. CEF is developed to enhance the resolution and reduce the analysis time of temperature rising elution fractionation (TREF) by separating polymer samples in both the crystallization and elution steps. A model based on the concept of population balance, crystallization/dissolution kinetics, and dispersion model is developed to understand the CEF fractionation mechanisms. The proposed CEF model is found to describe well the experimental CEF profiles of a series of ethylene/1-octene copolymers with different comonomer contents.

• 出版日期2015-3