Abstract
High pressure phase behavior measurements were done for thirty-two polyolefins in 2-methylpentane, n-pentane, and n-hexane to systematically map out the liquid-liquid equilibrium (LLE) boundaries for commercial polyolefins in hydrocarbon solvents. The samples cover two decades of molecular weight range, and contain varying levels of propylene, 1-butene, 1-hexene, and 1-octene. All samples had Mw/Mn < 1.30. Samples with adequate crystallinity were confirmed to have unimodal chemical composition distributions by TREF. The data were fit to SAFT-HR, SAFT-1, and PC-SAFT using temperature independent polyethylene-solvent and side branch-solvent interaction parameters. SAFT-HR and SAFT-1 adequately fit the data after modifying the literature polyethylene SAFT parameters. PC-SAFT fits the data less well because it predicts an excessively steep slope in the pressure-temperature LLE boundaries.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
