, two types of ionic polyphosphazenes are known. The first contains acid groups covalently bonded to the polymer chain. Examples are sulfonated and phosphonated poly(alkoxy-, aryloxy- or arylaminophosphazenes), i.e.,-[P(ZX)2=N]n-, Z = O or NH, X = substituted alkyl (RY) or aryl (ArY), Y = SO3H or PO3H2. The second type contains proton donors held by ionic and H-bonds to the polymer chain. Examples are protonated poly(alkylphosphazenes), - [P(R)2=NH+A-]n-, A- = inorganic or organic anion. These materials have been studied mainly as possible solid proton conducting electrolytes (SPEs) for direct methanol fuel cells.
P-C Bonded Polyphosphazenes
MONTONERI, Enzo
2004-01-01
Abstract
, two types of ionic polyphosphazenes are known. The first contains acid groups covalently bonded to the polymer chain. Examples are sulfonated and phosphonated poly(alkoxy-, aryloxy- or arylaminophosphazenes), i.e.,-[P(ZX)2=N]n-, Z = O or NH, X = substituted alkyl (RY) or aryl (ArY), Y = SO3H or PO3H2. The second type contains proton donors held by ionic and H-bonds to the polymer chain. Examples are protonated poly(alkylphosphazenes), - [P(R)2=NH+A-]n-, A- = inorganic or organic anion. These materials have been studied mainly as possible solid proton conducting electrolytes (SPEs) for direct methanol fuel cells.
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