Abstract
Conformational properties of comb-shaped copolymer polyelectrolytes such as polycarboxylate ether-based superplasticizers (PCEs) in aqueous solutions and at liquid/solid interfaces are fundamental to their performances as polymeric dispersants. Pioneering studies of Flatt and coworkers have demonstrated the great relevance of polymer theory to the PCE community. The present work revisits this topic with an emphasis on the semi-flexible characteristics of the anionic backbone decorated with flexible side chains. A simple physical picture, where the backbone adopts a “train-like” conformation on the surface, effectively as a two-dimensional worm-like chain, with the side chains mimicking surface-tethered chains, is presented for PCEs in the strongly adsorbed state.
Original language | English |
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Pages | 305-318 |
Number of pages | 14 |
Publication status | Published - Jan 1 2018 |
Event | 12th International Conference on Superplasticizers and other Chemical Admixtures in Concrete, ICSP 2018 - Beijing, China Duration: Oct 28 2018 → Oct 31 2018 |
Conference
Conference | 12th International Conference on Superplasticizers and other Chemical Admixtures in Concrete, ICSP 2018 |
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Country | China |
City | Beijing |
Period | 10/28/18 → 10/31/18 |
Keywords
- Adsorption layer thickness
- Comb architecture
- Persistence length
- Polyelectrolyte
- Polymer conformation
- Radius of gyration
- Wormlike chain
ASJC Scopus subject areas
- Civil and Structural Engineering
- Building and Construction
- Materials Science(all)