Study of Active Water Absorption of Polystyrene-Based Ionomers

The active water absorption behavior of poly(styrene-co-methacrylate] PSMANa and sulfonated polystyrene PSSNa ionomers was studied. On one hand, the acidic copolymers did not absorb water noticeably. On the other hand, the amount of water absorbed by the ionomer increased with increasing ion content...

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Bibliographic Details
Published in:Macromolecular research 2020, 28(10), , pp.932-938
Main Authors: So, In-Sub, Kim, Joon-Seop
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Complex Fluids and Microfluidics
Copolymers
Ionomers
Moisture content
Nanochemistry
Nanotechnology
Physical Chemistry
Polymer Sciences
Polystyrene resins
Soft and Granular Matter
Water absorption
고분자공학
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Summary:The active water absorption behavior of poly(styrene-co-methacrylate] PSMANa and sulfonated polystyrene PSSNa ionomers was studied. On one hand, the acidic copolymers did not absorb water noticeably. On the other hand, the amount of water absorbed by the ionomer increased with increasing ion content. Especially when the ion contents of the PSMANa and PSSNa ionomers exceeded 6 and 10 mol%, respectively, the maximum amount of the water absorbed by the ionomers increased rapidly as the ion content increased. This indicated that the cluster-dominant ionomers exhibited stronger water absorption behavior, compared to the matrix-dominant ionomers. In addition, when the ion contents of the PSMANa and PSSNa ionomers were less than 6 and 10 mol%, respectively, the volume and shape of the bulk ionomers did not change significantly by the water absorption. Morphological studies on the soaked ionomers showed that the SAXS peak shifted to lower angles as the water uptake increased with increasing ion content of the ionomers, which was consistent with the results obtained by the swelling method.
ISSN:1598-5032
2092-7673
DOI:10.1007/s13233-020-8129-6