Preparation and properties of alkaline anion exchange membrane with semi‐interpenetrating polymer networks based on poly(vinylidene fluoride‐<i>co</i>‐hexafluoropropylene)

Chen, Chun‐Ming; Chen, Bingxin; Hong, Redong

doi:10.1002/app.45775

Cited by 11 publications

(3 citation statements)

References 31 publications

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“…Because of the agreeable chemical stability of P(VDF–HFP) and TPU, ,− there is no difficulty in assuming that the SApEC could possess the same ability too. To figure it out, several SApECs were soaked into deionized water, anhydrous alcohol, and aqueous solutions of HCl and NaOH at a concentration of 0.1 mol/L, respectively (Figure a).…”

Section: Resultsmentioning

confidence: 99%

High-Performance Electronic Cloth for Facilitating the Rehabilitation of Human Joints

Cao

et al. 2019

ACS Appl. Mater. Interfaces

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The concern about easily characterizing the conditions of human joints to facilitate rehabilitation during recovery training has been out of sight, even though it is acknowledged that timely recovering functions of injured joints is a must. To facilitate the situation to be addressed, a stretchable, air-permeable electronic cloth (SApEC) was fabricated by electrostatic spinning and hot-pressing. The SApEC consists of conductive-elastic fabric Ag and composite nanofibrous membrane (CNFM) with components of poly(vinylidene fluoride-co-hexa-fluoropropyiene) and thermoplastic urethane. The electronic cloth not only owns chemical stability and ultralight weight, but scavenges triboelectric signals from joint movements. These characters allow the SApEC to be an easy and convenient indicator to indicate the activity of joints, when users get rehabilitation training in non-hospital places. With the assistance of several electronic components, the SApEC could control alarms, such as a warning lamp. This favorable ability allows the SApEC to make alerts, once users face any accidents again, like sudden fall or heart failure. Given the advantages mentioned above, it is reasonable to believe that the SApEC has a promising prospect in portable and wearable electronics, involving indicating rehabilitation of joints and keeping an eye on users’ safety.

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Section: Resultsmentioning

confidence: 99%

High-Performance Electronic Cloth for Facilitating the Rehabilitation of Human Joints

Cao

et al. 2019

ACS Appl. Mater. Interfaces

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“…However, the low mobility of hydroxide and the degradation of ammonium ions in alkaline environment make AEMs have low ion conductivity and poor chemical stability and mechanical stability . In addition, it is well known that high ion exchange capacity (IEC) is needed to improve conductivity of AEM, but high IEC value leads to high water uptake, swelling ratio, and poor mechanical property concurrently . The current research indicates that chemical crosslinking is an effective method to enhance dimensional stability and mechanical stability of AEMs …”

Section: Introductionmentioning

confidence: 99%

“…[24][25][26][27][28] In addition, it is well known that high ion exchange capacity (IEC) is needed to improve conductivity of AEM, but high IEC value leads to high water uptake, swelling ratio, and poor mechanical property concurrently. [29][30][31] The current research indicates that chemical crosslinking is an effective method to enhance dimensional stability and mechanical stability of AEMs. 32,33 AEMs improved membrane chemical and dimensional stability effectively; however, the conductivity of the crosslinked AEM was below the uncrosslinked AEM.…”

Section: Introductionmentioning

confidence: 99%

Crosslinked anion exchange membrane with improved membrane stability and conductivity for alkaline fuel cells

Wang

Liu

Wang

2019

J of Applied Polymer Sci

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As a core component of anion exchange membrane (AEM) fuel cells, it has practical significance to improve the performance of AEMs. However, it is difficult to obtain AEM with both good stability and high conductivity. In this study, a series of AEMs were prepared by chloromethylation, quaternization, and crosslinking reactions. The quaternization reaction was carried out first to ensure that there are abundant quaternary ammonium groups on AEM and enhance the conductivity of membrane. N,N,N′,N′‐tetramethylethylenediamine was used as a crosslinker to improve membrane stability and mechanical property. A simple, mild, and cost‐effective AEM synthetic route was developed. This strategy achieves a certain balance of electrochemical and physical properties. The effect of the crosslinking reactions on the property of membrane was evaluated. Crosslinked membranes have better dimensional stability (water uptake: 20.2% and swelling ratio: 2.1%), mechanical properties (55.84 MPa), and alkaline stability because crosslinked structures result in large steric hindrance. The mutually independent quaternization and crosslinking reaction do not affect the electrochemical performance of membranes; in the crosslinking reaction stage, crosslinker also reacted as quaternization agent and increased the number of reactive groups in AEM. Thus, the resulting crosslinked AEM exhibits higher ion exchange capacity and ionic conductivities (46.4 mS cm−1). © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48169.

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Types of Polymeric Electrolyte Anion Exchange Membranes: Heterogeneous and Grafted Membranes, Interpenetrating Polymer Networks and Homogeneous Membranes

Zhu

2024

Alkaline Anion Exchange Membranes for Fuel Cells

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Preparation and properties of alkaline anion exchange membrane with semi‐interpenetrating polymer networks based on poly(vinylidene fluoride‐co‐hexafluoropropylene)

Cited by 11 publications

References 31 publications

High-Performance Electronic Cloth for Facilitating the Rehabilitation of Human Joints

High-Performance Electronic Cloth for Facilitating the Rehabilitation of Human Joints

Crosslinked anion exchange membrane with improved membrane stability and conductivity for alkaline fuel cells

Types of Polymeric Electrolyte Anion Exchange Membranes: Heterogeneous and Grafted Membranes, Interpenetrating Polymer Networks and Homogeneous Membranes

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