Synthesis and Characterization of Novel Ethylene-graft-Ethylene/Propylene Copolymers
Stadler F, Arikan B, Kaschta J, Kaminsky W, Münstedt H (2011)
Publication Language: English
Publication Status: Published
Publication Type: Journal article, Review article
Publication year: 2011
Journal
Publisher: American Chemical Society
Book Volume: 44
Pages Range: 5053-5063
Journal Issue: 12
DOI: 10.1021/ma200588r
Abstract
A sequential metallocene-catalyzed synthesis of ethylene/propylene macromers, which are subsequently incorporated into growing polyethylene chains, leads to comb-like polymers. After the synthesis, a Soxhlet extraction ensures the purity of the sample. The GPC-MALLS analysis reveals narrowly distributed samples with a non-negligible degree of branching. The comb polymers show a very high viscosity, which significantly differs from conventional long-chain branched metallocene polyethylenes (LCB-mPE) but is in agreement with findings on comb model polymers. The zeroshear rate viscosity eta(o) lies significantly above the relation between M(w) and eta(o) for linear and for conventional LCB-mPE. The thermorheological behavior is complex and differs from that observed for LCB-mPE but also does not resemble an LDPE-like thermorheological behavior.
Authors with CRIS profile
Joachim Kaschta
Lehrstuhl für Werkstoffwissenschaften (Polymerwerkstoffe) (LSP)
Helmut Münstedt
Technische Fakultät
Involved external institutions
Germany (DE)How to cite
APA:
Stadler, F., Arikan, B., Kaschta, J., Kaminsky, W., & Münstedt, H. (2011). Synthesis and Characterization of Novel Ethylene-graft-Ethylene/Propylene Copolymers. Macromolecules, 44(12), 5053-5063. https://doi.org/10.1021/ma200588r
MLA:
Stadler, Florian, et al. "Synthesis and Characterization of Novel Ethylene-graft-Ethylene/Propylene Copolymers." Macromolecules 44.12 (2011): 5053-5063.
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