Influence of particle size of bio-calcium carbonate used as reinforcement of PBAT/PLA bio-based foams compatibilized with ionizing radiation
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2019
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Journal of Bioremediation & Biodegradation
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Bio-filler from eggshells as reinforcement of bio-based polymers are based on their principle benefits such as good
strength and stiffness besides being an environmental friendly, degradable and renewable material. Eggshell
is an agricultural waste largely considered as garbage and discarded mostly because it contributes to pollution.
Biodegradable polymers as PLA (poli-lactic acid) and PBAT (butylene adipate co-terephthalate) are thermoplastics
which can be processed using most conventional polymer processing methods. PLA is high in strength and modulus
(63 MPa and 3.4 GPa, respectively) but brittle (strain at break 3.8%) while PBAT is flexible and tough (strain at break
~710%). In order to reduce interfacial tension exhibited by PLA/PBAT blend, compatibilization is fundamental:
herein it was used as compatibilizing agent PLA previously e-beam irradiated at 150 kGy: ionizing radiation induces
compatibilization by free radicals, improving the dispersion and adhesion of blend phases, without the use of
chemical additives and at room temperature. PLA/PBAT, 65/35 blend with bio-filler, from avian eggs, of 38 and 75
µm particle size were prior homogenized in a co-rotating twin-screw extruder and further foamed in a mono-screw
extruder, by using CO2 as Physical Blowing Agent (PBA). Characterizations involved: Melt Index, DSC, TGA, FTIR,
SEM, XRD and mechanical essays.
Como referenciar
CARDOSO, ELISABETH C.L.; PARRA, DUCLERC F.; SCAGLIUSI, SANDRA R.; LUGAO, ADEMAR B. Influence of particle size of bio-calcium carbonate used as reinforcement of PBAT/PLA bio-based foams compatibilized with ionizing radiation. Journal of Bioremediation & Biodegradation, v. 10, p. 42-42, 2019. Disponível em: http://repositorio.ipen.br/handle/123456789/32203. Acesso em: 12 May 2024.
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.