Improving the mechanical and methanol crossover properties of fluorinated sulfonic acid functional polyphosphazenes by blending with polyvinylidene difluoride for fuel cell applications

Poly(3,4-ethylenedioxythiophene)/poly(bis(4-phenoxysulfonic acid)phosphazene) conductive composites: an alternative interfacial layer to PEDOT : PSS

“…4 and Table 1, most of the PEDOT : xPSAPs decompose over 250 1C except PEDOT:1PSAP which has the highest PEDOT content. Although it was proven that PSAP and its derivatives have high oxidative and thermal stability, 17 the PEDOT : xPSAPs show lower thermal stability compared to PEDOT : PSS (Fig. 4).…”

“…In contrast to styrene-based polymers, poly(aryloxyphosphazenes) are viable alternatives with some unique properties. 17 Poly(phosphazenes) have alternating P and N atoms on the main chain which are in their highest oxidation state and thus the poly(phosphazene) backbone is highly resistant to thermal and chemical oxidative conditions. 17 Whilst poly(dichlorophosphazene) is unstable in a moist environment, it is an effective precursor for lots of different and highly stable poly(phosphazenes) by the macromolecular nucleophilic substitution of the chlorine atoms by alcohols, phenols, or nucleophilic amines in the presence of a base.…”

“…17 Poly(phosphazenes) have alternating P and N atoms on the main chain which are in their highest oxidation state and thus the poly(phosphazene) backbone is highly resistant to thermal and chemical oxidative conditions. 17 Whilst poly(dichlorophosphazene) is unstable in a moist environment, it is an effective precursor for lots of different and highly stable poly(phosphazenes) by the macromolecular nucleophilic substitution of the chlorine atoms by alcohols, phenols, or nucleophilic amines in the presence of a base. Although it is typically challenging to synthesise sulfonic acid functionalised poly(arylo xyphosphazenes), some of us recently introduced a simple synthetic procedure for the preparation of fully or partially sulfonated poly(aryloxyphosphazenes) by covalent protection of the sulfonic acid moiety.…”

Bio‐based lamb tail fat phase change material with enhanced thermal properties by incorporation of cyclophosphazene additives

“…Moreover, they have essentially no absorption in a broad range of the electronic spectrum, and many phosphazene derivatives can be prepared by simple nucleophilic reaction of the selected amine, alcohol, or phenol nucleophile with the desired halophosphazene in the presence of a base 31 . Due to their distinctive characteristics, phosphazenes are useful organic‐inorganic hybrid materials for a variety of technological applications, including high‐temperature lubricants, 32 additives for fire suppression, 33,34 electrolytes for lithium‐ion batteries, 35 and fuel cell membranes 36‐38 . In 2023, Dagdag et al reported using cyclotriphosphazenes and the curing component 4,4′‐methylene dianiline primarily to enhance the thermal conductivity and mechanical properties of epoxy resin diglycidyl ether of bisphenol A (DGEBA) 39 .…”

“…31 Due to their distinctive characteristics, phosphazenes are useful organic-inorganic hybrid materials for a variety of technological applications, including high-temperature lubricants, 32 additives for fire suppression, 33,34 electrolytes for lithium-ion batteries, 35 and fuel cell membranes. [36][37][38] In 2023, Dagdag et al reported using cyclotriphosphazenes and the curing component 4,4 0methylene dianiline primarily to enhance the thermal conductivity and mechanical properties of epoxy resin diglycidyl ether of bisphenol A (DGEBA). 39 Therefore, they can be considered excellent candidates for thermal cycling and improving thermal properties for bio-based PCMs.…”