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Abstract
β-naphthol is polymerized by EI-Garfs developed method. The polymer structural assignment is made by FT-IR, elemental analysis and X-ray. The proposed structure is poly-2-hydroxy 1,4 naphthalene. The proposed mechanism of polymer is a radical cationic reaction. Thermal analysis of the polymer was done by using DT A, TGA. DT A does not show endothermic melting peaks which means that the polymer does not melt. The polymer shows thermal stability higher than polypyrogallol as the decomposition peak is at , 498.63°C which is higher than that of pyrogallol by 142.33°C. The pure poly ,LJ-naphthol and zinc-poly p-naphthol composite can be used as gamma-ray shielding material. The
~mass absorption coefficient of y-rays is higher than mass absorption coefficient of lead by 18.16 times and 13.35 times for pure polymer; when considering the reported value in the
, °terature and the measured value under the same conditions of mass absorption coefficient f lead respectively. Generally for composite it is higher than that of lead in the range of 6.16 - 17.2 times and in the range of 11.88 - 12.64 times when considering the reported ue in the literature and the• measured value under the same conditions of mass rption coefficient of lead respectively which is of the range for the pure polymer, so,
composite containing 10% polymer is the most efficient and economic for radiation Iding. Coating the composite with polystyrene gives strength and practically has no
t on (!!..). The composite with zinc coated with polystyrene absorbs p-ray together p
y-ray whether using or without using aluminum foil, so, the use of aluminum foil has eet on (!!..). Finally, from this infonnation it is noted that our polymer can be used as p
rial in nuclear electric power stations because it combines a high mass absorption cient of y-rays and p-rays.