Abstract
Governing equations are developed for equilibrium swelling of a cationic polyelectrolyte gel in aqueous solutions with various pH and molar fractions of a monovalent salt. Material constants are determined by fitting observations on several homo- and copolymer gels in two types of tests: when swelling is conducted in water baths with varied pH and a fixed molar fraction of salt, and when experiments are performed in water baths with a fixed pH and varied concentration of salt. Phenomenological relations are suggested for the effect of total volume fraction of monomers in a pre-gel solution, molar fraction of ionic monomers, and molar fraction of cross-linker on adjustable parameters in the model.
| Original language | English |
|---|---|
| Pages (from-to) | 23-35 |
| Number of pages | 13 |
| Journal | European Polymer Journal |
| Volume | 79 |
| DOIs | |
| State | Published - 1 Jun 2016 |
| Externally published | Yes |
Keywords
- Cationic gel
- Equilibrium swelling
- Modeling
- Structure-property relations
ASJC Scopus subject areas
- General Physics and Astronomy
- Organic Chemistry
- Polymers and Plastics
- Materials Chemistry