A review: studying the effect of graphene nanoparticles on mechanical, physical and thermal properties of polylactic acid polymer

Dehnou, Kianoush Hatami; Norouzi, Ghazal Saki; Majidipour, Marzieh

doi:10.1039/d2ra07011a

Cited by 14 publications

(9 citation statements)

References 196 publications

(331 reference statements)

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“…However, this method has its limitations in the production of nanocomposites. Among the more significant challenges is the occurrence of agglomerates or cavities in the field, along with the difficulty of achieving uniform distribution for particles with diverse morphologies [70,71]. Valapa et al [66] studied the influence of temperature on the exfoliation of expandable graphite (EG) completely integrated into graphene (GR) sheets, and the solution was mixed with PLA at concentrations of 0.1, 0.3, and 0.5 wt% GR.…”

Section: Transmission Electron Microscopymentioning

confidence: 99%

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Comprehensive Analysis of Rheological, Mechanical, and Thermal Properties in Poly(lactic acid)/Oxidized Graphite Composites: Exploring the Effect of Heat Treatment on Elastic Modulus

Mendoza-Duarte,

Vega-Rios

2024

Polymers

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This study is focused on investigating the rheological and mechanical properties of highly oxidized graphite (GrO) incorporated into a poly (lactic acid) (PLA) matrix composite. Furthermore, the samples were annealed at 110 °C for 30 min to study whether GrO concentration has an effect on the elastic modulus (E’) after treatment. The incorporation of GrO into PLA was carried out by employing an internal mixing chamber at 190 °C. Six formulations were prepared with GrO concentrations of 0, 0.1, 0.5, 1, 1.5, and 3 wt%. The thermal stability, thermomechanical behavior, and crystallinity of the composites were evaluated utilizing thermogravimetric analysis (TGA), dynamic mechanical analysis (DMA), and differential scanning calorimetry DSC, respectively. The thermal stability (according to Tmax) of the PLA/GrO composites did not change substantially compared with PLA. According to DSC, the crystallinity increased until the GrO concentration reached 1 wt% and afterward decreased. Regarding the heat treatment of the PLA/GrO composites, the E’ increased (by two orders of magnitude) at 80 °C with the maximum value achieved at 1 wt% GrO compared with the non-heat-treated composites.

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Section: Transmission Electron Microscopymentioning

confidence: 99%

“…The solution method is frequently employed and demonstrates effectiveness in promoting the mixing and dispersion of graphene. This is attributed to the solution's low viscosity, which facilitates the process in the mixing system [70].…”

Section: Transmission Electron Microscopymentioning

confidence: 99%

Comprehensive Analysis of Rheological, Mechanical, and Thermal Properties in Poly(lactic acid)/Oxidized Graphite Composites: Exploring the Effect of Heat Treatment on Elastic Modulus

Mendoza-Duarte,

Vega-Rios

2024

Polymers

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“…Graphene nanomaterials are two‐dimensional materials composed of carbon atoms with many outstanding properties. The material's high electrical conductivity, high strength, high flexibility, and high transparency make it suitable for a wide range of applications in electronics, energy, and biomedicine 124–126 . Graphene nanomaterials can be used to make thinner, stronger, and more transparent materials and devices, such as flexible displays, solar cells, and biosensors 127–129 .…”

Section: Overview Of Npsmentioning

confidence: 99%

“…The material's high electrical conductivity, high strength, high flexibility, and high transparency make it suitable for a wide range of applications in electronics, energy, and biomedicine. 124 , 125 , 126 Graphene nanomaterials can be used to make thinner, stronger, and more transparent materials and devices, such as flexible displays, solar cells, and biosensors. 127 , 128 , 129 In addition, graphene nanomaterials can be used for highly efficient electrocatalysts and battery electrode materials, as well as biomedical applications such as drug delivery and bioimaging.…”

Section: Overview Of Npsmentioning

confidence: 99%

Nanoparticles for efficient drug delivery and drug resistance in glioma: New perspectives

Liu,

Yang,

et al. 2024

CNS Neurosci Ther

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Gliomas are the most common primary tumors of the central nervous system, with glioblastoma multiforme (GBM) having the highest incidence, and their therapeutic efficacy depends primarily on the extent of surgical resection and the efficacy of postoperative chemotherapy. The role of the intracranial blood–brain barrier and the occurrence of the drug‐resistant gene O6‐methylguanine‐DNA methyltransferase have greatly limited the efficacy of chemotherapeutic agents in patients with GBM and made it difficult to achieve the expected clinical response. In recent years, the rapid development of nanotechnology has brought new hope for the treatment of tumors. Nanoparticles (NPs) have shown great potential in tumor therapy due to their unique properties such as light, heat, electromagnetic effects, and passive targeting. Furthermore, NPs can effectively load chemotherapeutic drugs, significantly reduce the side effects of chemotherapeutic drugs, and improve chemotherapeutic efficacy, showing great potential in the chemotherapy of glioma. In this article, we reviewed the mechanisms of glioma drug resistance, the physicochemical properties of NPs, and recent advances in NPs in glioma chemotherapy resistance. We aimed to provide new perspectives on the clinical treatment of glioma.

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“…To address these limitations, researchers have been actively exploring PLA-based composites reinforced with various organic and inorganic fillers. [2][3][4][5] These include carbon nanotubes, [6][7][8] graphene/ graphite, [9][10][11] nanoclays, 12,13 polyhedral oligomeric silsesquioxanes, 14,15 cellulose nanomaterials, [16][17][18][19] and others. 20,21 The goal is to enhance the overall properties of PLA, rendering it more versatile for various applications.…”

Section: Introductionmentioning

confidence: 99%

Aramid nanofiber‐reinforced poly(lactic acid) nanocomposites with enhanced thermal stability, melt‐crystallization rates, and mechanical toughness

Kim,

Eom,

Seo

et al. 2023

Polymer Composites

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The main goal of this study is to investigate the impact of aramid nanofiber (ANF) on enhancing various properties of poly(lactic acid) (PLA), including thermal stability, crystallization rates, melt‐rheological behavior, and mechanical properties. To achieve this, ANF fillers were produced using a modified deprotonation process from commercial aramid fibers, and a masterbatch (PLA/ANF = 90/10 by wt%) was prepared through solution blending and drying. The masterbatch was then combined with neat PLA through melt‐blending to create a range of PLA nanocomposites containing 1–10 wt% ANF loadings. Microscopic and spectroscopic analyses confirmed the uniform dispersion and intermolecular interaction of ANFs within the PLA matrix, respectively. As a result, the nanocomposites exhibited a slight increase in glass transition temperature with higher ANF loading, while the cold‐crystallization temperature decreased due to ANFs acting as nucleating agents during PLA crystallization. Isothermal crystallization analysis confirmed accelerated melt‐crystallization rates in nanocomposites with greater ANF content. The introduction of ANFs enhanced the thermal degradation temperature of the PLA matrix and the 700°C residue of the nanocomposites, attributed to ANFs' barrier and flame retardant effects on PLA. Moreover, the nanocomposites with higher ANF loading demonstrated superior tensile strength, strain at break, toughness, and impact strength owing to the effective bonding interactions at the interfaces between the PLA matrix and the ANF fillers.Highlights ANF‐reinforced PLA nanocomposites are prepared by masterbatch melt‐compounding. Uniform dispersion of ANFs in PLA is attained via effective interfacial bonding. ANFs boost the melt‐crystallization of the PLA matrix. ANFs enhance the thermal stability of the PLA matrix. Tensile strength and toughness of PLA are improved with higher ANF content.

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A review: studying the effect of graphene nanoparticles on mechanical, physical and thermal properties of polylactic acid polymer

Abstract: Polylactic acid (PLA) is a linear aliphatic polyester thermoplastic made from renewable sources such as sugar beet and cornstarch.

Cited by 14 publications

References 196 publications

Comprehensive Analysis of Rheological, Mechanical, and Thermal Properties in Poly(lactic acid)/Oxidized Graphite Composites: Exploring the Effect of Heat Treatment on Elastic Modulus

Comprehensive Analysis of Rheological, Mechanical, and Thermal Properties in Poly(lactic acid)/Oxidized Graphite Composites: Exploring the Effect of Heat Treatment on Elastic Modulus

Nanoparticles for efficient drug delivery and drug resistance in glioma: New perspectives

Aramid nanofiber‐reinforced poly(lactic acid) nanocomposites with enhanced thermal stability, melt‐crystallization rates, and mechanical toughness

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