Mechanical Reinforcement in Nylon 6 Nanocomposite Fiber Incorporated with Dopamine Reduced Graphene Oxide

Zhao, Yonghuan; Yang, Meng; Zhu, Feichao; Su, Juanjuan; Han, Jian

doi:10.3390/ma15155095

Cited by 7 publications

(5 citation statements)

References 38 publications

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“…The neat PA6 showed a crystallization temperature (Tc) of around 190.1 °C, a value close to that reported in the literature. [ 86 ] The polymer blends showed a slight decrease in crystallization temperature compared to neat PA6. Although not a significant decrease in the T c of the blends, the behavior suggests that there was an inhibition in the crystallization of PA6 in the presence of HDPE‐g‐MA (L), HDPE‐g‐MA (H), LDPE‐g‐MA and HDPE‐g‐AA.…”

Section: Resultsmentioning

confidence: 99%

Toward Reactive Processing of Polyamide 6 Based Blends with Polyethylene Grafted with Maleic Anhydride and Acrylic Acid: Effect of Functionalization Degree

Luna

Ferreira

Costa

et al. 2023

Macro Reaction Engineering

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The reactivity of different polyethylene modifiers based on acrylic acid (AA) and maleic anhydride (MA) with polyamide 6 (PA6) is investigated, using several degrees of functionalization. The polymer blends are processed in an internal mixer and injection molded. Mechanical, rheological, infrared spectroscopy, thermal, thermomechanical properties, and morphology are evaluated. The torque rheometry results show that higher functionalization degrees favored a high reactivity with PA6. As a consequence, there is an increase in the viscosity of the polymer blends, which is reflected in the reduction of the melt flow index (MFI), compared to PA6. High impact strength and elongation at break properties confirm the blends' compatibility. The elastic modulus and the tensile strength maintain high values, suggesting a balance of mechanical properties. In addition, the polymer blends' heat deflection temperature (HDT) and thermal stability properties are comparable to neat PA6. The morphology obtained by scanning electron microscopy show dispersed and refined particles in the PA6 matrix, indicating stabilization at the interface. Incorporating only 10% of high‐density polyethylene grafted with acrylic‐acid (HDPE‐g‐AA) is very efficient in optimizing the properties of PA6, contributing to broadening the range of applications for the processing industry.

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Section: Resultsmentioning

confidence: 99%

Toward Reactive Processing of Polyamide 6 Based Blends with Polyethylene Grafted with Maleic Anhydride and Acrylic Acid: Effect of Functionalization Degree

Luna

Ferreira

Costa

et al. 2023

Macro Reaction Engineering

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“…CNF showed a main weight loss at 227 °C, which was attributed to the decomposition of cellulose [42]. The rGO presented two stages in the process of thermal weight loss: the first stage ended at 100°C with 10 wt% weight loss, due to the moisture, and the second stage, at 345 °C, was mainly attributed to the decomposition of the labile residual oxygen-containing groups on the surface of GO [43]. The addition of 25% CNF to rGO decreases the temperature of degradation to 223 °C.…”

Section: Thermal Stability Of the Composite Materialsmentioning

confidence: 99%

Self-Assembled CNF/rGO/Tannin Composite: Study of the Physicochemical and Wound Healing Properties

Fernández¹,

Llanquileo²,

Bustos³

et al. 2023

Preprint

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Plant extracts have been evaluated to determine their bioactivities and their potential use in wound healing. In this study, a conductive composite material, based on graphene oxide (GO), nanocellulose (CNF) and tannins (TA) from pine bark, reduced using polydopamine (PDA), was developed for wound dressing. The amount of CNF and TA was varied in the composite material and a complete characterization including SEM, FTIR, XRD, XPS, TGA was performed. Also, the conductivity, mechanical properties, cytotoxicity, and in vitro wound healing of the materials were evaluated. The results showed a successful physical interaction between CNF, TA and GO. In-creasing the CNF amount in the composite reduced the thermal properties, surface charge and conductivity of the material, but its strength, cytotoxicity and wound healing performance were improved. The TA incorporation slightly reduced the cell viability and migration, which may be associated with the doses used and the chemical composition of the extracts. However, the in vitro obtained results demonstrated that these composite materials can be suitable for wound healing.

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“…CNF initial weight losses starting at 168.27 °C, showed a main weight loss at 226.79 °C, which was attributed to the decomposition of cellulose [42]. The rGO presented two stages in the process of thermal weight loss: the first stage ended at 100 °C with 10 wt% weight loss, due to the moisture, and the second stage initiated at 314.04 °C and reachied a maximum at 345.87 °C, which was mainly attributed to the decomposition of the labile residual oxygen-containing groups on the surface of GO [43]. Thus, rGO was thermically more The rGO/CNF 25 loaded with the TA increases the C-OH bond until reaching values close to 30% in the peak area.…”

Section: Thermal Stability Of the Composite Materialsmentioning

confidence: 99%

Self-Assembled CNF/rGO/Tannin Composite: Study of the Physicochemical and Wound Healing Properties

Fernández,

Llanquileo,

Bustos

et al. 2023

Polymers

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In this study, a conductive composite material, based on graphene oxide (GO), nanocellulose (CNF), and tannins (TA) from pine bark, reduced using polydopamine (PDA), was developed for wound dressing. The amount of CNF and TA was varied in the composite material, and a complete characterization including SEM, FTIR, XRD, XPS, and TGA was performed. Additionally, the conductivity, mechanical properties, cytotoxicity, and in vitro wound healing of the materials were evaluated. A successful physical interaction between CNF, TA, and GO was achieved. Increasing CNF amount in the composite reduced the thermal properties, surface charge, and conductivity, but its strength, cytotoxicity, and wound healing performance were improved. The TA incorporation slightly reduced the cell viability and migration, which may be associated with the doses used and the extract’s chemical composition. However, the in-vitro-obtained results demonstrated that these composite materials can be suitable for wound healing.

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Mechanical Reinforcement in Nylon 6 Nanocomposite Fiber Incorporated with Dopamine Reduced Graphene Oxide

Cited by 7 publications

References 38 publications

Toward Reactive Processing of Polyamide 6 Based Blends with Polyethylene Grafted with Maleic Anhydride and Acrylic Acid: Effect of Functionalization Degree

Toward Reactive Processing of Polyamide 6 Based Blends with Polyethylene Grafted with Maleic Anhydride and Acrylic Acid: Effect of Functionalization Degree

Self-Assembled CNF/rGO/Tannin Composite: Study of the Physicochemical and Wound Healing Properties

Self-Assembled CNF/rGO/Tannin Composite: Study of the Physicochemical and Wound Healing Properties

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