Abstract: Synthesis of polyreactive blue MXR dye was achieved through polymerization of reactive blue MXR dye followed by chemical oxidation with potassium persulfate. The change of colour from blue to brown is one of the indications for the formation of polyreactive blue MXR dye. Fourier transform infrared spectroscopy (FTIR), UV visible spectroscopy, Atomic force microscopy (AFM) and X-ray diffractrometry (XRD), Particle size analyzer were used to characterize the polyreactive blue MXR dye. UV-visible spectral study confirms the extension of conjugation in polyreactive blue MXR dye. From the study of FTIR spectrum for dye and polymer dye, absence of asymmetric stretching of NH2 group in polymer dye spectrum confirms that the polymerization achieved successfully. The size of the polymer dye was found to be nanosize (18.11nm) by X-ray diffraction study. AFM analysis showed the three dimensional view of the nanosized reactive dye. PSA analysis showed the size reduction of polymerized dye.
 

Keywords: XRD, AFM, PSA, Reactive dye, Chemical oxidation, Polymer