The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.
Well-Defined, Model Long Chain Branched Polyethylene. 2. Melt Rheological Behavior
Abstract
In this paper, we examine the melt rheology of well-defined, model polymers where the long chain branching (LCB) is precisely known from the synthesis. All of these are made by the hydrogenation of polybutadiene, but they vary greatly in the level and type of LCB present. We find that all polymers that have LCB show a greater degree of shear thinning than linear chains. This applies both to those with a single branch (stars) and also to those with multiple branches per chain (such as combs). However, only molecules with multiple branches induce extensional thickening in a sample. Only a small amount of these comblike molecules, on the order of 5%, are needed to show this effect. We also show here how a new method of treating the shear data, the so-called Van Gurp−Palmen analysis, can give a more easily interpreted form of the results that can reveal the length and amount of branches in a sample. The insights generated from this work show the importance of access to well-defined polymers with several kinds of branching architecture for the development of a deeper understanding of polymer rheology.
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Citations
Cites
Synthesis of a model 3-miktoarm star terpolymer
Iatrou, H., & Hadjichristidis, N. (1992) · Macromolecules · doi:10.1021/ma00044a028 · Cited by 264
Self-citationViscosity and self-diffusion coefficient of hydrogenated polybutadiene
Pearson, D. S., Fetters, L. J., Graessley, W. W., Ver Strate, G., & von Meerwall, E. (1994) · Macromolecules · doi:10.1021/ma00081a014 · Cited by 198
Self-citation
Cited by
Vitrimers: Permanently crosslinked polymers with dynamic network topology
Van Zee, N. J., & Nicolaÿ, R. (2020) · Progress in Polymer Science · doi:10.1016/j.progpolymsci.2020.101233 · Cited by 734
Long-Chain Branched Polypropylenes by Electron Beam Irradiation and Their Rheological Properties
Auhl, D., Stange, J., Münstedt, H., Krause, B., Voigt, D., Lederer, A., Lappan, U., & Lunkwitz, K. (2004) · Macromolecules · doi:10.1021/ma030579w · Cited by 334
Thermorheological Behavior of Various Long-Chain Branched Polyethylenes
Stadler, F. J., Kaschta, J., & Münstedt, H. (2008) · Macromolecules · doi:10.1021/ma702367a · Cited by 91
A commercially viable solution process to control long-chain branching in polyethylene
Froese, R. D., Arriola, D. J., den Doelder, J., Hou, J., Kashyap, T., Lu, K., Martinetti, L., & Stubbert, B. D. (2024) · Science · doi:10.1126/science.adn3067 · Cited by 57
Stadler, F. J., & Karimkhani, V. (2011) · Macromolecules · doi:10.1021/ma200550c · Cited by 41
Metadata
- Authors
- Lohse, D. J., Milner, S. T., Fetters, L. J., Xenidou, M., Hadjichristidis, N., Mendelson, R. A., García-Franco, C. A., & Lyon, M. K.
- Venue
- Macromolecules
- Publisher
- American Chemical Society (ACS)
- Published
- 2002-03-09
- Volume
- 35
- Issue
- 8
- Pages
- 3066-3075
- ISSN
- 0024-9297 (ISSN-L)
- 1520-5835
- OpenAlex
- W1969838513
- Cited by
- 360
- References
- 2
- FWCI
- 16.43
- Type
- journal article
- Language
- en
- Open access
- closed
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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