A composition [composition (C), herein after] comprises from 30 to 95% by weight of at least one poly(arylether sulfone) polymer, said polymer comprising more than 50% moles of recurring units (Rt) of formula (St): -E-Ar1-SO2-[Ar2-(T-Ar3)n-SO2]m-Ar4-(formula St) wherein n and m, equal to or different from each other, are independently zero or an integer of 1 to 5, each of Ar1, Ar2, Ar3 and Ar4 equal to or different from each other and at each occurrence, is an aromatic moiety, T is a bond or a divalent group optionally comprising one or more than one heteroatom; and E is of formula (Et): herein each of R', equal to or different from each other, is selected from the group consisting of halogen, alkyl, alkenyl, alkynyl, aryl, ether, thioether, carboxylic acid, ester, amide, imide, alkali or alkaline earth metal sulfonate, alkyl sulfonate, alkali or alkaline earth metal phosphonate, alkyl phosphonate, amine and quaternary ammonium; j' is zero or is an integer from 1 to 4, from to 50%wt. of at least one reinforcing filler, and all% wt. are based on the total weight of the composition(C).