Evolução da morfologia e das propriedades mecânicas de blendas PA6/AES compatibilizadas com EPDM-MA

Silva, Pamela Thainara Vieira da; Luna, Carlos Bruno Barreto; Ferreira, Eduardo da Silva Barbosa; Filho, Edson Antônio dos Santos; Araújo, Edcleide Maria

doi:10.33448/rsd-v10i10.18791

Cited by 3 publications

(1 citation statement)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[22] The main impact modifiers used to toughen PA6, in general, are: styreneethylene-butylene-styrene grafted with maleic anhydride (SEBS-g-MA), [23] ethylene-propylene grafted with anhydride maleic (EPR-g-MA), [24,25] maleic anhydride-functionalized acrylonitrile-butadiene-styrene (ABS-g-MA), [26,27] and maleic anhydride-modified ethylene-propylene-diene (EPDM-g-MA). [12,28,29] These impact modifiers when incorporated into PA6 matrix can contribute to the production of toughened nanocomposites, upon reinforcing nanofillers addition to balance the mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Tuning the performance of PA6/EPDM‐MA nanocomposites reinforced with Ni_0.₅Zn₀_.₅Fe₂O₄. Effect of the mixing protocol on mechanical, thermal, thermomechanical, magnetic, and morphological behavior

et al. 2022

Self Cite

View full text Add to dashboard Cite

The mixing protocol effect was investigated in nanocomposites based on polyamide 6 (PA6) and maleic anhydride grafted ethylene-propylene-diene (EPDM-MA), using Ni-Zn ferrite as filler. The nanocomposites were processed using an internal mixer and specimens were injection molded. Compounds properties were investigated through Izod impact strength, tensile strength, x-ray diffraction (XRD), magnetic measurements, differential scanning calorimetry (DSC), thermogravimetry (TG), heat deflection temperature (HDT), and scanning electron microscopy (SEM). PA6/EPDM-MA mixture showed super-tough behavior, with an increase of around 918% in impact strength, compared with PA6. However, there was a loss close to 50% in the elastic modulus and 5% in HDT, due to the high flexibility. In view of this, this mixture was selected for the production of nanocomposites toughened with Ni-Zn ferrite, using three mixing sequences. When the nanocomposite was processed by the simultaneous mixing of all components (PA6/EPDM-MA/Ni-Zn), the highest impact strength (458 J/m) was reached, corresponding to a gain of 486%, compared with PA6. On the other hand, when Ni-Zn ferrite and PA6 were initially premixed by melting, before EPDM-MA addition in a second processing step, HDT and impact strength properties increased by 6% and 281%, in relation to PA6. In addition, the nanocomposites showed magnetic responses, with a soft material behavior, that is, they magnetize and demagnetize easily. In general, toughened and magnetic nanocomposites were produced, with good mechanical and thermal properties, displaying potential to produce magnetic films.

show abstract

Section: Introductionmentioning

confidence: 99%

Tuning the performance of PA6/EPDM‐MA nanocomposites reinforced with Ni_0.₅Zn₀_.₅Fe₂O₄. Effect of the mixing protocol on mechanical, thermal, thermomechanical, magnetic, and morphological behavior

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

Preparation of flexible and magnetic PA6/SEBS‐MA nanocomposites reinforced with Ni‐Zn ferrite

et al. 2021

Self Cite

View full text Add to dashboard Cite

Magnetic and flexible nanocomposites of polyamide 6 (PA6)/styrene-(ethylene-butylene)-styrene grafted with maleic anhydride (SEBS-MA) were prepared using Ni-Zn ferrite synthesized by combustion reaction. Thermal treatment was applied to the Ni-Zn ferrite to form a more crystalline phase.The nanocomposites were processed in an internal mixer and later injection molded. The materials were characterized by torque rheometry, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Izod impact strength, tensile strength, magnetic measurements, differential scanning calorimetry (DSC), thermogravimetry (TG), heat deflection temperature (HDT), and scanning electron microscopy (SEM). Ferrite calcination led to a higher degree of crystallinity and nanocomposites with a higher number of crystalline peaks. This favored a higher saturation magnetization. The magnetic hysteresis curves of the nanocomposites indicated a ferrimagnetic behavior. The impact strength and elongation at break increased significantly compared to neat PA6, suggesting the formation of flexible and magnetic nanocomposites. This behavior was ascribed to a chemical reaction between the terminal amine groups of PA6 and the maleic anhydride of SEBS-MA, confirmed by FTIR and torque rheometry. Neat PA6 and the nanocomposites showed similar thermogravimetric, HDT, melting temperature, and crystallization properties. SEM results showed that the dispersed ferrite tends to form agglomerates, especially if calcined. In general, the addition of the non-calcined Ni-Zn ferrite to the PA6 matrix improved the mechanical properties. Conversely, the calcination of ferrite tended to improve the magnetic behavior of the nanocomposites.

show abstract

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

et al. 2021

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Evolução da morfologia e das propriedades mecânicas de blendas PA6/AES compatibilizadas com EPDM-MA

Cited by 3 publications

References 28 publications

Tuning the performance of PA6/EPDM‐MA nanocomposites reinforced with Ni_0.₅Zn₀_.₅Fe₂O₄. Effect of the mixing protocol on mechanical, thermal, thermomechanical, magnetic, and morphological behavior

Tuning the performance of PA6/EPDM‐MA nanocomposites reinforced with Ni_0.₅Zn₀_.₅Fe₂O₄. Effect of the mixing protocol on mechanical, thermal, thermomechanical, magnetic, and morphological behavior

Preparation of flexible and magnetic PA6/SEBS‐MA nanocomposites reinforced with Ni‐Zn ferrite

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

Contact Info

Product

Resources

About

Evolução da morfologia e das propriedades mecânicas de blendas PA6/AES compatibilizadas com EPDM-MA

Cited by 3 publications

References 28 publications

Tuning the performance of PA6/EPDM‐MA nanocomposites reinforced with Ni0.5Zn0.5Fe2O4. Effect of the mixing protocol on mechanical, thermal, thermomechanical, magnetic, and morphological behavior

Tuning the performance of PA6/EPDM‐MA nanocomposites reinforced with Ni0.5Zn0.5Fe2O4. Effect of the mixing protocol on mechanical, thermal, thermomechanical, magnetic, and morphological behavior

Preparation of flexible and magnetic PA6/SEBS‐MA nanocomposites reinforced with Ni‐Zn ferrite

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

Contact Info

Product

Resources

About

Tuning the performance of PA6/EPDM‐MA nanocomposites reinforced with Ni_0.₅Zn₀_.₅Fe₂O₄. Effect of the mixing protocol on mechanical, thermal, thermomechanical, magnetic, and morphological behavior

Tuning the performance of PA6/EPDM‐MA nanocomposites reinforced with Ni_0.₅Zn₀_.₅Fe₂O₄. Effect of the mixing protocol on mechanical, thermal, thermomechanical, magnetic, and morphological behavior