Feasibility of Manufacturing Disposable Cups using PLA/PCL Composites Reinforced with Wood Powder

Silva, Wallisson Alves da; Luna, Carlos Bruno Barreto; Melo, João Baptista da Costa Agra de; Araújo, Edcleide Maria; Filho, Edson Antônio dos Santos; Duarte, Raimundo

doi:10.1007/s10924-021-02076-8

Cited by 29 publications

(25 citation statements)

References 67 publications

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“…Elastic modulus data acquired under tension are illustrated in Figure 4. PLA and BioPE had an elastic modulus of 1221 and 376 MPa, respectively, with PLA having the highest stiffness [37,38], and BioPE increased flexibility, results corroborating these are shown later on for impact strength. PLA/BioPE due to the addition of 30% of a ductile material to PLA matrix, displayed decaying of 26.8% on the material's stiffness compared to PLA, i.e., it presented 893 MPa.…”

Section: Tensile Testmentioning

confidence: 63%

“…Regarding PLA (Figure 11a,b), smooth surface without roughness was observed, due to the absence of plastic deformation, characteristic of fragile fracture, as observed in the impact strength and tensile experiments [37,38,[61][62][63].…”

Section: Scanning Electron Microscopy (Sem)mentioning

confidence: 70%

“…Figure 3 presents TG plots of investigated samples and computed parameters from these plots are displayed in Table 5. From Figure 3 it is observed that neat polymers presented a single decomposition step, around 300-373 °C for PLA [36][37][38], and 350-496 °C for BioPE [35]. For PLA/BioPE bioblend, two decomposition steps were verified, where each decomposition step is characteristic of the individual polymer, i.e., PLA and BioPE.…”

Section: Thermogravimetry (Tg)mentioning

confidence: 99%

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Production of Eco-Sustainable Materials: Compatibilizing Action in Poly (Lactic Acid)/High-Density Biopolyethylene Bioblends

et al. 2021

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Motivated by environment preservation, the increased use of eco-friendly materials such as biodegradable polymers and biopolymers has raised the interest of researchers and the polymer industry. In this approach, this work aimed to produce bioblends using poly (lactic acid) (PLA) and high-density biopolyethylene (BioPE); due to the low compatibility between these polymers, this work evaluated the additional influence of the compatibilizing agents: poly (ethylene octene) and ethylene elastomer grafted with glycidyl methacrylate (POE-g-GMA and EE-g-GMA, respectively), polyethylene grafted with maleic anhydride (PE-g-MA), polyethylene grafted with acrylic acid (PE-g-AA) and the block copolymer styrene (ethylene-butylene)-styrene grafted with maleic anhydride (SEBS-g-MA) to the thermal, mechanical, thermomechanical, wettability and morphological properties of PLA/BioPE. Upon the compatibilizing agents’ addition, there was an increase in the degree of crystallinity observed by DSC (2.3–7.6% related to PLA), in the thermal stability as verified by TG (6–15 °C for TD10%, 6–11 °C TD50% and 112–121 °C for TD99.9% compared to PLA) and in the mechanical properties such as elongation at break (with more expressive values for the addition of POE-g-GMA and SEBS-g-MA, 9 and 10%, respectively), tensile strength (6–19% increase compared to PLA/BioPE bioblend) and a significant increase in impact strength, with evidence of plastic deformation as observed through SEM, promoted by the PLA/ BioPE phases improvement. Based on the gathered data, the added compatibilizers provided higher performing PLA/BioPE. The POE-g-GMA compatibilizer was considered to provide the best properties in relation to the PLA/BioPE bioblend, as well as the PLA matrix, mainly in relation to impact strength, with an increase of approximately 133 and 100% in relation to PLA and PLA/BioPE bioblend, respectively. Therefore, new ecological materials can be manufactured, aiming at benefits for the environment and society, contributing to sustainable development and stimulating the consumption of eco-products.

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Section: Tensile Testmentioning

confidence: 63%

Section: Scanning Electron Microscopy (Sem)mentioning

confidence: 70%

Section: Thermogravimetry (Tg)mentioning

confidence: 99%

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Production of Eco-Sustainable Materials: Compatibilizing Action in Poly (Lactic Acid)/High-Density Biopolyethylene Bioblends

et al. 2021

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“…[10][11][12] In this classification are the polyesters based on hydroxy-carbonic acids, especially poly (hydroxybutyrate) -PHB, poly (e-caprolactone)-PCL and poly (lactic acid)-PLA. [11][12][13][14] PCL is a synthetic aliphatic polymer, synthetized from petroleum, biodegradable, biocompatible and hydrophobic. 15,16 Thermoplastic with technological applications, such as orthopedic prostheses, food packaging, devices for controlled drug delivery.…”

Section: Introductionmentioning

confidence: 99%

Effect of injection parameters on the thermal, mechanical and thermomechanical properties of polycaprolactone (PCL)

Luna

Siqueira

Ferreira

et al. 2021

Journal of Elastomers & Plastics

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In this work, an experimental design was applied in the injection molding process of polycaprolactone (PCL), aiming to evaluate the mechanical properties (impact strength, tensile strength and Shore D Hardness), thermal (differential scanning calorimetry (DSC)) and thermomechanical (heat deflection temperature (HDT)), in PCL injected specimens. A type 2n planning was applied, with n = 3 and central point, having the input factors: processing temperature profile, mold temperature and injection flow. The results showed that the DSC curves presented a complex mechanism during crystallization, suggesting that depending on the processing conditions a high degree of crystallinity can be obtained. When using a higher processing temperature and a higher injection flow, there is an increase in the mass of the PCL parts. The impact strength is more expressive when a higher injection flow and a lower processing temperature are applied, reaching values around 260 J/m. The mold temperature impairs the elongation at the break of the PCL, while the elastic modulus was governed by the degree of crystallinity. A deleterious effect on HDT was observed with increased injection flow, suggesting that this parameter negatively affects thermomechanical resistance. The use of experimental design in the processing of PCL is important, since it is possible to optimize properties with the ideal conditions of injection molding.

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“…Do ponto de vista ambiental, os biocompósitos chamaram atenção da indústria e da comunidade científica, uma vez que apresentam boas propriedades mecânicas e são ecológicos (Lee et al, 2020;Siqueira et al, 2020). Esses novos materiais verdes receberam interesses significativos nos últimos anos, devido a nova legislação que incentiva tecnologias de manufaturas sustentáveis (Silva et al, 2021;Tarrés e Ardanuy, 2020). Nesse contexto, os biocompósitos com matriz polimérica de biopolietileno (BioPE), policaprolactona (PCL) e poli(acido lático) (PLA) estão sendo bastante explorados, utilizando as fibras naturais como cargas de reforço (Achla e Jacob, 2018;Immonem et al, 2019;Siqueira et al, 2019;Bazan et al, 2020a;Morais et al, 2019).…”

Section: Introductionunclassified

Produção de biocompósitos de biopolietileno/farinha de madeira compatibilizados com PE-g-MA. Avaliação do teor de anidrido maleico nas propriedades mecânicas e termomecânicas

Silva

Luna

et al. 2021

RSD

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A produção de materiais ecológicos está sendo incentivada, visando minimizar os impactos ambientais e promover uma maior sustentabilidade. Portanto, esse trabalho, teve como objetivo desenvolver biocompósitos de biopolietileno (BioPE)/farinha de madeira (FM), utilizando como compatibilizante o polietileno enxertado com anidrido maleico (PE-g-MA). Os biocompósitos foram preparados em uma extrusora de rosca dupla corrotacional e moldados por injeção. As propriedades de resistência ao impacto Izod, resistência à tração, Dureza Shore D, Temperatura de Deflexão Térmica (HDT) e absorção de água foram investigadas. A resistência ao impacto aumentou quando o biocompósito BioPE/FM foi compatibilizado com PE-g-MA. Esse acréscimo foi mais expressivo para 10% de PE-g-MA com alto grau de enxertia de anidrido maleico, indicando um maior nível de interação entre as fases. Os biocompósitos BioPE/FM/PE-g-MA apresentaram propriedades de módulo elástico, resistência à tração, dureza Shore D e HDT aprimoradas, em comparação ao biocompósito não compatibilizado. Um aspecto importante foi a redução da absorção de água para os biocompósitos compatibilizados com PE-g-MA, sugerindo um maior efeito barreira para a difusão de umidade. Do ponto de vista do grau de enxertia de anidrido maleico no PE-g-MA, em geral, a resistência ao impacto foi a propriedade mais sensível. Os resultados indicam que a farinha de madeira é um resíduo com potencial para ser reaproveitado no desenvolvimento de biocompósitos.

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Feasibility of Manufacturing Disposable Cups using PLA/PCL Composites Reinforced with Wood Powder

Cited by 29 publications

References 67 publications

Production of Eco-Sustainable Materials: Compatibilizing Action in Poly (Lactic Acid)/High-Density Biopolyethylene Bioblends

Production of Eco-Sustainable Materials: Compatibilizing Action in Poly (Lactic Acid)/High-Density Biopolyethylene Bioblends

Effect of injection parameters on the thermal, mechanical and thermomechanical properties of polycaprolactone (PCL)

Produção de biocompósitos de biopolietileno/farinha de madeira compatibilizados com PE-g-MA. Avaliação do teor de anidrido maleico nas propriedades mecânicas e termomecânicas

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