Abstract
Two types of polysulfone capillary plasma-separator, which were filled with (wet type) and without (dry type) reverse osmosis water, were irradiated with gamma-ray of 1.5, 2.5, 5.0, and 10 Mrad, and various chemical and physical characteristics were examined. In the water extracts (extracting condition:121 C, 60min) of the capiilaries, UV absorption and potassium permanganate reducing substances increased up to 2.5 Mrad then decreased at 5.0 Mrad, and increased again at 10 Mrad. The amount of permanganate reducing substances and UV absorption in the wet type were significantly larger than those in the dry type at every radiation strength. Tensile strength and elongation percentage of capillaries decreased with increasing radiation strength, while the magnitude of decrease in the wet type was significantly larger than that in the dry type. No changes on NMR and IR spectra of polysulf one membrane due to irradiation were observed.
