Surface orientation of hydrophilic groups in sulfonated poly(ether ether ketone) membranes

He, Chenfeng; Guiver, Michael D.; Mighri, Frej; Kaliaguine, Serge

doi:10.1016/j.jcis.2013.06.063

Cited by 23 publications

(17 citation statements)

References 51 publications

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“…On the other hand, SpDMAc and DMF presented one single mobility domain, which means that exist uniformity of components distribution (because the forces around protons are similar). In 2016 He and coworkers found that there is a relationship between polarity and arrangement of sulfonic groups of polymer chains, which could lead to different mobility domains, finding high phase separation for films made with water/alcohol solution, this phenomenon has also been reported by other authors …”

Section: Resultssupporting

confidence: 54%

Ternary proton exchange membranes with low‐cost raw materials: Solvent type influence on microstructure development, high ionic conductivity, and ionic liquid lixiviation protection

Arias

Gomes

2018

J of Applied Polymer Sci

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A critical stage of solvent evaporation during membrane casting was identified as responsible for significant differences in performance of ternary membranes composed of PEEK with 73% of sulfonation degree. DemaTfO and MmtdemaDMF showed to be the best solvent for casting of membranes prepared through the present study, which is against the observations made through other different studies. Fractal structures are formed regardless of solvent polarity, and interlamellar spacing is found to be higher when DMF is used, which led to higher conductivity and IL leaching protection. Proton relaxometry showed that only the membranes made with DMF and DMAc possess one single mobility domain. Transmission electron microscopy micrographs showed a higher damage in membranes with two different mobility domains and consequent phase separation. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46012.

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Section: Resultssupporting

confidence: 54%

Ternary proton exchange membranes with low‐cost raw materials: Solvent type influence on microstructure development, high ionic conductivity, and ionic liquid lixiviation protection

Arias

Gomes

2018

J of Applied Polymer Sci

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“…The measurement procedure included the registration of the contact angles between a drop of a distilled water applied onto a swollen membrane mopped with a filter paper to remove the excessive water from the surface [29,30]. Data were treated using software Build 340 (version 2.1).…”

Section: Contact Angle Measurementsmentioning

confidence: 99%

How physico-chemical and surface properties of cation-exchange membrane affect membrane scaling and electroconvective vortices: Influence on performance of electrodialysis with pulsed electric field

et al. 2016

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“…Among others, sulfonated poly (etheretherketone) (sPEEK) membranes have been integrated into functional devices [39], thanks to their good solvent resistance, high thermal stability, and excellent mechanical properties due to the aromatic backbone. Sulfonated poly(etheretherketone) (sPEEK) represents a low cost alternative [40] to Nafion-117 and takes advantage of the easy post-modification procedures for the introduction of sulfonate end groups (–SO 3 H) [41,42]. Sulfonation can, in fact, be easily carried out by using sulfuric acid on polymeric PEEK membranes [43].…”

Section: Introductionmentioning

confidence: 99%

Nanocomposite Based on Functionalized Gold Nanoparticles and Sulfonated Poly(ether ether ketone) Membranes: Synthesis and Characterization

et al. 2017

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Gold nanoparticles, capped by 3-mercapto propane sulfonate (Au-3MPS), were synthesized inside a swollen sulfonated poly(ether ether ketone) membrane (sPEEK). The formation of the Au-3MPS nanoparticles in the swollen sPEEK membrane was observed by spectroscopic and microscopic techniques. The nanocomposite containing the gold nanoparticles grown in the sPEEK membrane, showed the plasmon resonance λmax at about 520 nm, which remained stable over a testing period of three months. The size distribution of the nanoparticles was assessed, and the sPEEK membrane roughness, both before and after the synthesis of nanoparticles, was studied by AFM. The XPS measurements confirm Au-3MPS formation in the sPEEK membrane. Moreover, AFM experiments recorded in fluid allowed the production of images of the Au-3MPS@sPEEK composite in water at different pH levels, achieving a better understanding of the membrane behavior in a water environment; the dynamic hydration process of the Au-3MPS@sPEEK membrane was investigated. These preliminary results suggest that the newly developed nanocomposite membranes could be promising materials for fuel cell applications.

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Surface orientation of hydrophilic groups in sulfonated poly(ether ether ketone) membranes

Cited by 23 publications

References 51 publications

Ternary proton exchange membranes with low‐cost raw materials: Solvent type influence on microstructure development, high ionic conductivity, and ionic liquid lixiviation protection

Ternary proton exchange membranes with low‐cost raw materials: Solvent type influence on microstructure development, high ionic conductivity, and ionic liquid lixiviation protection

How physico-chemical and surface properties of cation-exchange membrane affect membrane scaling and electroconvective vortices: Influence on performance of electrodialysis with pulsed electric field

Nanocomposite Based on Functionalized Gold Nanoparticles and Sulfonated Poly(ether ether ketone) Membranes: Synthesis and Characterization

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