Preparation and characterization of phosphonic acid functionalized siloxane/polyimide composite proton exchange membranes

2016 ◽  
Vol 287 ◽  
pp. 1-7 ◽  
Author(s):  
Wei Li ◽  
Chunhui Shen ◽  
Shanjun Gao ◽  
Shanshan Yin ◽  
Huilin Li
Keyword(s):  
Phosphonic Acid ◽  
Proton Exchange Membranes ◽  
Proton Exchange

Crosslinked Proton Exchange Membranes with a Wider Working Temperature Based on Phosphonic Acid Functionalized Siloxane and PPO

2021 ◽  
Vol 29 (3) ◽  
pp. 199-210
Author(s):  
Zhihui Wu ◽  
Chunhui Shen ◽  
Shanjun Gao ◽  
Xi Zhu ◽  
Mingliang Zhang ◽  
...  
Keyword(s):  
Phosphonic Acid ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Working Temperature

scholarly journals Synthesis and Characterization of Partially Renewable Oleic Acid-Based Ionomers for Proton Exchange Membranes

Polymers ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 130
Author(s):  
Carlos Corona-García ◽  
Alejandro Onchi ◽  
Arlette A. Santiago ◽  
Araceli Martínez ◽  
Daniella Esperanza Pacheco-Catalán ◽  
...  
Keyword(s):  
Oleic Acid ◽  
Proton Conductivity ◽  
Electrochemical Impedance ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Molar Ratio ◽  
Aromatic Diamines ◽  
Chemical Structures ◽  
Long Chain

The future availability of synthetic polymers is compromised due to the continuous depletion of fossil reserves; thus, the quest for sustainable and eco-friendly specialty polymers is of the utmost importance to ensure our lifestyle. In this regard, this study reports on the use of oleic acid as a renewable source to develop new ionomers intended for proton exchange membranes. Firstly, the cross-metathesis of oleic acid was conducted to yield a renewable and unsaturated long-chain aliphatic dicarboxylic acid, which was further subjected to polycondensation reactions with two aromatic diamines, 4,4′-(hexafluoroisopropylidene)bis(p-phenyleneoxy)dianiline and 4,4′-diamino-2,2′-stilbenedisulfonic acid, as comonomers for the synthesis of a series of partially renewable aromatic-aliphatic polyamides with an increasing degree of sulfonation (DS). The polymer chemical structures were confirmed by Fourier transform infrared (FTIR) and nuclear magnetic resonance (1H, 13C, and 19F NMR) spectroscopy, which revealed that the DS was effectively tailored by adjusting the feed molar ratio of the diamines. Next, we performed a study involving the ion exchange capacity, the water uptake, and the proton conductivity in membranes prepared from these partially renewable long-chain polyamides, along with a thorough characterization of the thermomechanical and physical properties. The highest value of the proton conductivity determined by electrochemical impedance spectroscopy (EIS) was found to be 1.55 mS cm−1 at 30 °C after activation of the polymer membrane.

scholarly journals Nafion phosphonic acid composite membranes for proton exchange membranes fuel cells

2019 ◽  
Vol 487 ◽  
pp. 889-897 ◽  
Author(s):  
Fátima C. Teixeira ◽  
Ana I. de Sá ◽  
António P.S. Teixeira ◽  
C.M. Rangel
Keyword(s):  
Fuel Cells ◽  
Phosphonic Acid ◽  
Composite Membranes ◽  
Proton Exchange Membranes ◽  
Proton Exchange

Synthesis and Characterization of the Monomer 2,2′ diallylbisphenol-A (ABFA) for obtaining Proton Exchange Membranes based on Crosslinked Sulphonated Poly(Arylene ether sulphone)s

2012 ◽  
Vol 319 (1) ◽  
pp. 150-160
Author(s):  
Júlio C. Souza ◽  
Carlos H. F. B. Souza ◽  
Claúdio Homero F. Silva ◽  
Maria Elisa S. R. Silva ◽  
Ricardo G. Sousa ◽  
...  
Keyword(s):  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Synthesis And Characterization ◽  
Arylene Ether ◽  
Diallylbisphenol A

scholarly journals Synthesis and characterization of a novel crosslinkable side-chain sulfonated poly(arylene ether sulfone) copolymer proton exchange membranes

RSC Advances ◽  
2020 ◽  
Vol 10 (42) ◽  
pp. 24772-24783 ◽  
Author(s):  
Shouping Wang ◽  
Fugang He ◽  
Qiang Weng ◽  
Diao Yuan ◽  
Pei Chen ◽  
...  
Keyword(s):  
Single Cell ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Side Chain ◽  
Synthesis And Characterization ◽  
High Proton Conductivity ◽  
Arylene Ether ◽  
High Proton ◽  
Sulfonated Poly

A series of novel crosslinkable and crosslinked side-chain SPAES has been prepared. The S-SPAES(1/2) has high proton conductivity and acceptable single-cell performance.

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