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


Publisher: American Chemical Society

Book Volume: 44

Pages Range: 5053-5063

Journal Issue: 12

DOI: 10.1021/ma200588r


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.

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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.


Stadler, Florian, et al. "Synthesis and Characterization of Novel Ethylene-graft-Ethylene/Propylene Copolymers." Macromolecules 44.12 (2011): 5053-5063.

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