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Nafion in Dilute Solvent Systems: Dispersion or Solution?
- Source :
- ACS macro letters. 1(12)
- Publication Year :
- 2022
-
Abstract
- The morphology of Nafion (EW = 1000, Na+ form) in dilute solvents is investigated using small angle neutron scattering (SANS) and 19F NMR. SANS modeling indicates three types of particle morphology: (i) a well-defined cylindrical dispersion in glycerol and in ethylene glycol with different degrees of solvent penetration; (ii) a less-defined, highly solvated large particle (>200 nm) in water/isopropanol mixtures; and (iii) a random-coil conformation (true solution behavior) in N-methylpyrrolidone. These distinct morphological characteristics of Nafion are consistent with the main and side chain mobilities measured by 19F NMR.
Details
- ISSN :
- 21611653
- Volume :
- 1
- Issue :
- 12
- Database :
- OpenAIRE
- Journal :
- ACS macro letters
- Accession number :
- edsair.doi.dedup.....ef8502a39e304a7f345de66a07ea80a9