Keywords: DPC, 1,5-diphenyl carbazide; APS, ammonium persulfate; CS, chitosan; IPN, interpenetrating polymer network; MWNT, multiwalled carbon nanotubes; MBA, N,N′-methylenebisacrylamide; PPA, poly(acrylic acid); PADPA, poly(4-amino diphenyl amine); PANI, polyanili