Pyridine containing polymers aromatic polyethers

There have been studies indicating that blends of PBI polymers with pyridine-containing polymers could prove useful in a high-temperature PEM fuel cell. Kallitsis et al. [31] combined commercially supplied w-PBI with an aromatic polyether that contained a pyridine moiety in the main chain (PPyPO) these polymer blends were then soaked in 85% wt PA. Dynamic mechanical analysis of a 75/25 PBl/PPyPO block copolymer showed reasonable mechanical strength and flexibility. The conductivity of this copolymer was not reported, but the conductivity of 85/15 PBI/PPyPO block copolymer was 0.013 S cm at a relatively low PA doping level. Further investigation of these systems is required to prove its utility as a fuel cell membrane. 

Pyridine based aromatic polyethers are novel polymer structures that contain polar pyridine groups as main chain linkage in... 

The second general approach for the covalent cross-linking was the use of side double bond functionalized copolymers [24]. In this case the synthesis of aromatic polyethers containing polar pyridine units in the main chain and side cross-linkable propenyl groups was the key step. These polymers were subjected to thermal cross-linking with the use of a cross-linker. The effect of the cross-linking on the thermal and mechanical... 

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