Study of bio-based foams prepared from PBAT/PLA reinforced with bio-calcium carbonate and compatibilized with gamma radiation
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Use of Gamma Radiation Techniques in Peaceful Applications
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Foamed polymers are future materials, considered “green materials” due to their
properties with very low consumption of raw materials; they can be used to ameliorate
appearance of structures besides contributing for thermal and acoustic insulation.
Nevertheless, waste disposal has generated about 20–30% of total of solid
volume in landfills besides prejudicing flora and fauna by uncontrolled disposal.
The development of biodegradable polymers aims to solve this problem, considering
that in 2012, bio-plastics market was evaluated in 1.4 million tons produced and
in 2017 attained 6.2 million tons. Biodegradable polymers as poly(lactic acid) (PLA)
and poly(butylene adipate-co-terephthalate) (PBAT) are thermoplastics which can
be processed using the most conventional polymer processing methods. PLA is high
in strength and modulus but brittle, while PBAT is flexible and tough. In order to
reduce interfacial tension exhibited by PLA/PBAT blends, it was used as compatibilizing
agent 5 phr of PLA previously gamma-radiated at 150 kGy. Ionizing radiation
induces compatibilization by free radicals, improving the dispersion and adhesion
of blend phases, without using chemical additives and at room temperature. As
a reinforcement agent, calcium carbonate from avian eggshell waste was used, at
10 ph of micro particles, 125 μm. Admixtures were further processed in a singlescrew
extruder, using CO2 as physical blowing agent (PBA). Property investigations
were performed by DSC, TGA, XRD, SEM, FTIR, and mechanical essays.
Como referenciar
CARDOSO, ELIZABETH C.L.; PARRA, DUCLERC F.; SCAGLIUSI, SANDRA R.; SALES, RICARDO M.; CAVIQUIOLI, FERNANDO; LUGAO, ADEMAR B. Study of bio-based foams prepared from PBAT/PLA reinforced with bio-calcium carbonate and compatibilized with gamma radiation. In: ALMAYAHI, BASIM (ed.). Use of Gamma Radiation Techniques in Peaceful Applications. London, UK: IntechOpen, 2019. , cap. 9. p. 1-17. DOI: 10.5772/intechopen.85462. Disponível em: http://repositorio.ipen.br/handle/123456789/30871. 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.