Amino groups have been introduced into the phenylene rings comprising poly (phenylene ether sulphone) (PES) chains by performing nitration/reduction procedures on preformed PES and by using an aminated dichloride as a comonomer to achieve direct synthesis of aminated PES by polycondensation. It appears that side reactions can occur which cause problems with nitration/reduction procedures. The use of 2-amino-4-chlorophenyl sulphone as comonomer provides an effective means of introducing amino groups, but the copolymers obtained had inherent viscosities lower than that of homopolymer made by a comparable polycondensation procedure.
Посилання на статтю:
Synthesis of poly(phenylene ether sulphone)s containing aminated chain units / Paul Conningham, Robert J. Roach and John B. Rose // Polymer. – 1992. – Vol 33. – P. 3951-3956.