Abstract
The short chain branching distribution (SCBD) of six metallocene-based ethylene copolymers was evaluated by preparative temperature rising eluting fractionation and by differential scanning calorimetry (DSC) after stepwise isothermal treatment of the samples at different temperatures. It is found that the SCBD of ethylene copolymers varies with the density of the copolymers and the type of the comonomer. Both samples with narrow SCBD and samples with broad SCBD can be prepared by the same metallocene catalyst. The lamellar thickness distributions of the samples were also obtained by fitting the DSC melting traces. The reasons that lead to broad SCBD of metallocene-based LLDPE were also discussed.
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.
