Hydrophobic comb-shaped polymers based on PPO with long alkyl side chains as novel anion exchange membranes

Fuel cell evaluation of anion exchange membranes based on poly(phenylene oxide) with different cationic group placement

“…This polymer family has been extensively studied for different side-chain congurations, and in some cases as co-polymers or as blend materials. [13][14][15][16][17][18][19][20][21][22] All ex situ studies show high performances, such as conductivities of 20-90 mS cm À1 in contact with liquid water and stabilities of up to 200 h in aqueous 1 M KOH or NaOH at 80 C. 13,[16][17][18][19][20][21][22] However, poor stability with hydration cycling, and lowered conductivity for lower relative humidity have also been reported for these types of membranes. 16,23,24 In operating AEMFCs, single polarisation curves of PPO-based membranes have shown that these materials can be used in a fuel cell.…”

Crosslinked Pore-Filling Anion Exchange Membrane Using the Cylindrical Centrifugal Force for Anion Exchange Membrane Fuel Cell System

“…The hydroxide conductivities of the crosslinked pore-filling membranes with different degree of crosslinking were measured at 25, 40, 60 and 80 • C. As shown in Figure 7A, the conductivities tended to be proportional to temperature. In addition, as the degree of crosslinking was lowered, it was found that the conductivity of the membrane was improved due to the flexibility of the polymer and the ease of water molecule mobility [33].…”

“…Examples include poly(arylene ether sulfone), poly(ether ether ketone), poly(styrene-ethylene-butylene-styrene), poly(styrene-butadiene-styrene), polybenzimidazole, poly(phenylene), poly(phenylene oxide) and polynorbornene [ 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 ]. The anion exchange polymers with long side chain came up as a remarkable revolution to improve the water uptake because it can trap water between the polymer chains mentioned above [ 33 ]. Second, the pore-filled membrane is good approach that can improve the mechanical stability by using the physical property of the porous support [ 4 ].…”

Synthesis and performance of flexible epoxy resin with long alkyl side chains via click reaction

“…Also, 1‐dodecanethiol is the most commercially available and most widely used alkyl mercaptan. A dodecyl segment is a hydrophobic group with low surface energy, and it is often used for the hydrophobic modification of materials, such as hydrophobic self‐assembly layers on the surfaces of nanoparticles, 29,30 and for the hydrophobic modification of polymers 31–34 …”

“…A dodecyl segment is a hydrophobic group with low surface energy, and it is often used for the hydrophobic modification of materials, such as hydrophobic self-assembly layers on the surfaces of nanoparticles, 29,30 and for the hydrophobic modification of polymers. [31][32][33][34] In the present study, we synthesized the epoxy resin DGEBDBP by introducing a double bond to the side chain and grafting a dodecyl segment onto the double bond using a thiol-ene click reaction. The cured epoxy resin was prepared by mixing E44 and DGEBDBP of varying compositions.…”