Architectural dispersity in model branched polymers: Analysis and Rheological consequences
SCIE
SCOPUS
- Title
- Architectural dispersity in model branched polymers: Analysis and Rheological consequences
- Authors
- Snijkers, F; Evelyne van Ruymbeke; Paul Kim; Lee, Hyojoon; Anastasia Nikopoulou; Chang, T; Nikos Hadjichristidis; Jai Pathak; Dimitris Vlassopoulos
- Date Issued
- 2011-11-08
- Publisher
- ACS Publications
- Abstract
- We combine state-of-the-art synthetic, chromatographic, rheological, and modeling techniques in order to address the role of architectural polydispersity in the rheology of model branched polymers. This synergy is shown to be imperative in the field and leads to several important results. Even the best available synthesis is prone to "contamination" by side-products. The exact targeted macromolecular structure can be analyzed experimentally and statistically and eventually fractionated. Temperature-gradient interaction chromatography proves to be an indispensible tool in this process. All techniques are sensitive to the various macromolecular structures, but in different ways. In particular, the presence of side-products may or May not influence the linear rheology, due to competing contributions of the different relaxation processes involved, reflecting different structures at different fractions. Hence, combination of all these techniques is the key for fully decoding the architectural composition of branched polymers and its influence on rheology.
- Keywords
- MOLECULAR-WEIGHT DISTRIBUTION; LINEAR RHEOLOGY; COMB POLYMERS; INTERACTION CHROMATOGRAPHY; VISCOELASTIC PROPERTIES; MELTS; DYNAMICS; POLYSTYRENE; RELAXATION; POLYETHYLENES
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/16989
- DOI
- 10.1021/MA2013805
- ISSN
- 0024-9297
- Article Type
- Article
- Citation
- MACROMOLECULES, vol. 44, no. 21, page. 8631 - 8643, 2011-11-08
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.