Hydrophilic SPEEK/PES composite membrane for pervaporation desalination

Zeng, Haoze; Liu, Sijia; Wang, Jing; Li, Yanbo; Zhu, Li; Xu, Man; Wang, Cunwen

doi:10.1016/j.seppur.2020.117265

Cited by 36 publications

(4 citation statements)

References 34 publications

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“…3A and B, all membranes showed peaks at 1407 cm −1 , 1487 cm −1 , 1579 cm −1 (vibration of aromatic ring), at 1240 cm −1 (ether function), and at 1150 cm −1 , 1105 cm −1 (sulfone group), typically attributed to the specific chemical structure of PES. 40,41 A new peak at 1648 cm −1 appeared on the blend membranes, which was ascribed to the amide group in the hydrophilic PNB component. 42 Furthermore, with increasing polymer additive content (Fig.…”

Section: Resultsmentioning

confidence: 99%

Glucose-sensitive poly(ether sulfone) composite membranes blended with phenylboronic acid-based amphiphilic block copolymer for self-regulated insulin release

et al. 2023

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Section: Resultsmentioning

confidence: 99%

Glucose-sensitive poly(ether sulfone) composite membranes blended with phenylboronic acid-based amphiphilic block copolymer for self-regulated insulin release

et al. 2023

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“…On the contrary, the surface would be hydrophobic if the contact angle is more than 90 . 31,32 The contact angles in Table 1 show an trend with the increased quantity of NGO in the PBI membranes, and the largest contact angle observed is 67.7 . This result attributed to the acid-base interaction or hydrogen bonds between PBI chains and NGO nanosheets, leading to microphase separation and fewer hydrophilic groups on PBI chains and NGO nanosheets, thus making the membranes more hydrophobic.…”

Section: Contact Angle and Thermal Stabilitymentioning

confidence: 99%

Enhanced performance of high‐temperature proton exchange membrane by introducing 1,2, 4‐triazole‐ functionalized graphene oxide into polybenzimidazole

Miao

Liu

Zhang

2021

Intl J of Energy Research

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1,2,4-triazole is successfully grafted onto C═C bonds of graphene oxide surface with retained carboxylic acid, hydroxy, and epoxy groups. The structure of the resulting 1,2,4-triazole-doped graphene oxide (NGO) is proved by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy spectra.The polybenzimidazole (PBI)/NGO composite membranes (NGO content:0.5%, 1%, 3%, 5%) were also prepared and subjected to the absorption of various suitable amounts of phosphoric acid (PA). As expected, the composite membranes well maintained their superior mechanical properties (57-69 MPa) containing 2 PA molecules per PBI unit. The morphological characterization using the atomic force microscopy phase images and transmission electron microscopy analysis revealed a micro-phase separation, providing continuous ionic channels and ultimately enhancing the ionic conductivity. As a result, the maximum proton conductivity of 27 mS cm À1 is achieved for PBI/NGO-3 membrane (NGO content: 3%) at 160 C under anhydrous conditions, and the maximum power density of the cell using PBI/NGO-3 membrane is 254 mW cm À2 . These composite membranes displayed great potential for high-temperature proton exchange membranes under anhydrous conditions. The scanning electron microscopy images further showed the condensed structures with the suitable quantity of NGO in the composite membranes due to the hydrogen bonding and acid-base interactions between NGO and PBI. This condensed structure improved the mechanical properties, enhanced thermal stability, and increased oxidative stability of the composite membranes. Additionally, the PBI/NGO/PA composite membranes exhibit high thermal decomposition temperature (Td[5%] higher than 284 C) and superior tensile strengths (greater than 55 MPa). Remarkably, the membranes demonstrated exceptional oxidative stability and could maintain less than 15% quantity loss for more than 200 hours in Fenton's reagent (3 wt% H 2 O 2 , 4 ppm Fe 2+ ). Novelty statementThe manuscript entitled "Enhanced Performance of High-Temperature Proton Exchange Membrane by Introducing 1,2,4-Triazole Functionalized Graphene Oxide into Polybenzimidazole" was written by Haiqiu Zhang In this work,

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“…and 1012 cm À1 , which are mainly caused by the tensile vibration of O S O on the -SO 3 H group 34. The strong characteristic peak at 1580 cm À1 is mainly caused by the stretching vibration of C C on the aromatic ring.For [IM1][H 2 PO 4 ]/SPEEK membrane and [IM2][H 2 PO 4 ]/ SPEEK membrane, the stretching vibration around 1210 cm À1 can be seen, which is mainly caused by the stretching vibration of O P O, indicating that [IM2] is successfully crosslinked to SPEEK membrane.…”

mentioning

confidence: 94%

Study of high‐temperature proton exchange membrane through one‐step encapsulation of ionic liquid in sulfonated poly(ether ether ketone)

Sun

et al. 2022

J of Applied Polymer Sci

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The proton exchange membrane (PEM) is the core component of a high‐performance proton exchange membrane fuel cell (PEMFC). Since the traditional PEM has the disadvantages of poor cell performance and high cost, a new kind of PEM with good proton conductivity, low cost and simple preparation should be explored. In this paper, several different binary hybrid membranes were successfully prepared through one‐step encapsulation of different ionic liquids (ILs) in sulfonated poly(ether ether ketone) (SPEEK). The prepared membranes were characterized by scanning electron microscope (SEM), thermogravimetric analysis (TG), Fourier transform infrared spectroscopy (FT‐IR), X‐ray photoelectron spectroscopy (XPS), proton conductivity measurements and dynamic mechanical analysis (DMA). SEM images showed that ILs were fully doped into SPEEK. FT‐IR and XPS proved that SPEEK and IL formed a new chemical bond combined with intermolecular hydrogen bonds. The TG results showed that the binary hybrid membranes could maintain stability even at 300°C. The water uptake and swelling ratio showed that the water absorption capacity of the binary composite membrane played a vital role in improving proton conductivity. The proton conductivity study showed that ILs doping also helped to improve the proton conductivity of the SPEEK membrane. When the doping amount of IL was maintained at 30 wt.%, it has the highest proton conductivity, 25 mS cm−1 at 120°C. It was proved that anhydrous hybrid membrane tetraphenyl imidazole sulfate/SPEEK ([IM2][H2PO4]/SPEEK) could be used in PEMFC at medium temperature.

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Hydrophilic SPEEK/PES composite membrane for pervaporation desalination

Cited by 36 publications

References 34 publications

Glucose-sensitive poly(ether sulfone) composite membranes blended with phenylboronic acid-based amphiphilic block copolymer for self-regulated insulin release

Glucose-sensitive poly(ether sulfone) composite membranes blended with phenylboronic acid-based amphiphilic block copolymer for self-regulated insulin release

Enhanced performance of high‐temperature proton exchange membrane by introducing 1,2, 4‐triazole‐ functionalized graphene oxide into polybenzimidazole

Study of high‐temperature proton exchange membrane through one‐step encapsulation of ionic liquid in sulfonated poly(ether ether ketone)

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