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Silva, Williams B. da; Vasconcelos, Henrique M. de; Aquino, Katia Aparecida da S.; Araujo, Elmo S. de
Associacao Brazileira de Energia Nuclear, Rio de Janeiro, RJ (Brazil)2009
Associacao Brazileira de Energia Nuclear, Rio de Janeiro, RJ (Brazil)2009
AbstractAbstract
[en] Samples of commercial poly(vinyl chloride) (PVC) containing a Hindered Amine Stabilizer (HAS) and samples containing a salt mixture of CuCl2/KI both in 0.1, 0.3, 0.5 and 0.7wt% concentration of HAS or salt mixture were investigated. The samples were irradiated with gamma radiation (60Co) at room temperature in air at 25 kGy, sterilization dose of PVC medical supplies. The viscosity-average molecular weight (Mv) was analyzed by viscosity technique. Comparison of viscosity results obtained before and after irradiation ( at 25 kGy) of PVC showed crosslinking effect is predominant. On the other hand the PVC-HAS systems and PVC-salt systems showed a decrease in Mv values on irradiated samples reflecting the main chain random scissions effect. However the PVC-salt at 0.5wt% concentration showed no significant degradation index value. This result suggests that salt keeps the good radiolytic stabilization behavior of gamma-irradiated PVC and the HAS additive is not efficient on radiolytic stabilization of PVC. The CuCl2/KI mixture at 0.5wt% in the PVC matrix influenced the thermal behavior of the polymer increasing of 42 deg C in maximum thermal degradation temperature. In addition, the salt mixture influences significantly the Young's Modulus of PVC increasing the rigidity of polymer. (author)
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Source
2009; [9 p.]; INAC 2009: International nuclear atlantic conference. Innovations in nuclear technology for a sustainable future; Rio de Janeiro, RJ (Brazil); 27 Sep - 2 Oct 2009; 16. Brazilian national meeting on reactor physics and thermal hydraulics; Rio de Janeiro, RJ (Brazil); 27 Sep - 2 Oct 2009; 9. Brazilian national meeting on nuclear applications; Rio de Janeiro, RJ (Brazil); 27 Sep - 2 Oct 2009; 1. Meeting on nuclear industry; Rio de Janeiro, RJ (Brazil); 27 Sep - 2 Oct 2009; Published only in CD-Rom. Code: e13716fullpaper.pdf
Record Type
Miscellaneous
Literature Type
Conference; Numerical Data
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Country of publication
ALKALI METAL COMPOUNDS, BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, CHEMICAL ANALYSIS, CHEMICAL REACTIONS, CHLORIDES, CHLORINATED ALIPHATIC HYDROCARBONS, CHLORINE COMPOUNDS, COBALT ISOTOPES, COPPER COMPOUNDS, COPPER HALIDES, DATA, DEFORMATION, DOSES, ELECTROMAGNETIC RADIATION, GRAVIMETRIC ANALYSIS, HALIDES, HALOGEN COMPOUNDS, HALOGENATED ALIPHATIC HYDROCARBONS, INFORMATION, INORGANIC PHOSPHORS, INTERMEDIATE MASS NUCLEI, INTERNAL CONVERSION RADIOISOTOPES, IODIDES, IODINE COMPOUNDS, IONIZING RADIATIONS, ISOMERIC TRANSITION ISOTOPES, ISOTOPES, MECHANICAL PROPERTIES, MINUTES LIVING RADIOISOTOPES, NUCLEI, NUMERICAL DATA, ODD-ODD NUCLEI, ORGANIC CHLORINE COMPOUNDS, ORGANIC COMPOUNDS, ORGANIC HALOGEN COMPOUNDS, ORGANIC POLYMERS, PHOSPHORS, POLYMERIZATION, POLYMERS, POLYVINYLS, POTASSIUM COMPOUNDS, QUANTITATIVE CHEMICAL ANALYSIS, RADIATIONS, RADIOISOTOPES, THERMAL ANALYSIS, TRANSITION ELEMENT COMPOUNDS, YEARS LIVING RADIOISOTOPES
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