Poly(vinylpyrrolidone) (PVP) has been anchored on the glass fiber membrane for capturing radioiodine in gaseous state and dissolved in water. First, precursor alkoxy silane monomer was anchored by sol-gel method on the glass fiber membrane and its polymerizing double bond was used subsequently for the anchoring of PVP by UV graft-polymerization. Thus formed PVP-membrane was characterized by Fourier transform infrared spectroscopy, field emission scanning electron microscopy with EDS and thermo-gravimetric analysis. The sorption efficiency and loading capacity of the membrane toward I-2, and stability of I-2 complexed in the membrane were studied by UV-Vis spectrophotometry and I-131 radiotracer method.