Hydration and interfacial water in Nafion membrane probed by transmission infrared spectroscopy
Article Abstract:
Infrared spectroscopy is used to detect water inside pores and channels of Nafion membrane exchanged with ether proton ([H.sup.+]) or sodium ions ([Na.sup.+]). Control experiments performed with poly(hexafluoropropylene-co-tetrafluoroethylene) (FEP) membrane have not shown any evidence for water or methanol permeation, demonstrating the crucial role played by the ion-filled channels and pores in facilitating solvent transport within Nafion membrane.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
User Contributions:
Comment about this article or add new information about this topic:
Ca(super 2+)-induced thermoreversible and controllable complexation of poly(N-vinylcaprolactum-co-sodium acrylate) microgels in water
Article Abstract:
A study is performed to examine the Ca(super 2+)-induced thermoreversible and controllable complexation of poly(N-vinylcaprolactam-co-sodium acrylate) microgels in water and determine the possibility of using poly(N-vinylcaprolactum) (PVCL) microgels as an injecting composition for certain biomedical applications. Results indicate that the extent of complexation increases with the increase in the concentration of Ca(super 2+).
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2001
User Contributions:
Comment about this article or add new information about this topic:
Fast ring-shape self-assembling in water-based ink-jetted droplets
Article Abstract:
A study presents a phenomenon of ring pattern formation of nanoparticles in small ink-jetted droplets (30-60 mum diameter) of water-based suspensions on substrate, which occurs in several seconds. It is learnt that the self-assembling ring pattern is formed during 3-10 s in water-based pigment (Cu-phthalocyanine) ink-jetted droplets if sodium dodecyl sulfate surfactant is added at 1-3% (w/w) level.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Generalized interface polariity scale based on second harmonic spectroscopy. Protein adsorption at interfaces detected by second harmonic generation
- Abstracts: Oxide film formation and oxygen adsorption on copper in aqueous media as probed by surface-enhanced Raman spectroscopy
- Abstracts: Hydration of tetraphenylphosphonium and tetraphenylborate ions by dielectric relaxation spectroscopy
- Abstracts: Quantitative orientation of alpha helical polypeptides by attenuated total reflection infrared spectroscopy. Quantitative determination of the polar order induced under high electric field in amorphous PDR1M azobenzene polymer films
- Abstracts: In situ studies of methanol decomposition and oxidation on Pd(111) by PM-IRAS and XPS spectroscopy. Metal atoms and particles on oxide supports: probing structure and charge by infrared spectroscopy