Biodegradability of PP/HMSPP and natural and synthetic polymers blends in function of gamma irradiation degradation
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Radiation Physics and Chemistry
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Polymers are used for numerous applications in different industrial segments,
generating enormous quantities of discarding in the environment. Polymeric materials
composites account for an estimated from 20-30% total volume of solid waste.
Polypropylene (PP) undergoes crosslinking and extensive main chain scissions when
submitted to ionizing irradiation; as one of the most widely used linear hydrocarbon
polymers, PP, made from cheap petrochemical feed stocks, shows easy processing
leading it to a comprehensive list of finished products. Consequently, there is
accumulation in the environment, at 25 million tons per year rate, since polymeric
products are not easily consumed by microorganisms. PP polymers are very bioresistant due to involvement of only carbon atoms in main chain with no hydrolysable
functional group. Several possibilities have been considered to minimize the
environmental impact caused by non-degradable plastics, subjecting them to: physical,
chemical and biological degradation or combination of all these due to the presence of
moisture, air, temperature, light, high energy radiation or microorganisms. There are
three main classes of biodegradable polymers: synthetic polymers, natural polymers and
blends of polymers in which one or more components are readily consumed by
microorganisms. This work aims to biodegradability investigation of a PP/HMSPP
(High Melt Strength Polypropylene) blended with sugarcane bagasse, PHB (Polyhydroxy-butyrate) and PLA (Poly-Lactic Acid), both synthetic polymers, at a 10%
level, subjected to gamma radiation at 50, 100, 150 and 200 kGy doses.
Characterization will comprise IR, DSC, TGA, OIT and Laboratory Soil Burial Test
(LSBT).
Como referenciar
CARDOSO, ELISABETH C.L.; SCAGLIUSI, SANDRA R.; LIMA, LUIS F.C.P.; BUENO, NELSON R.; BRANT, ANTONIO J.C.; PARRA, DUCLERC F.; LUGAO, ADEMAR B. Biodegradability of PP/HMSPP and natural and synthetic polymers blends in function of gamma irradiation degradation. Radiation Physics and Chemistry, v. 94, p. 249-252, 2014. DOI: 10.1016/j.radphyschem.2013.07.017. Disponível em: http://repositorio.ipen.br/handle/123456789/3997. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.