Comparing the rheological and reinforcing effects of graphene oxide on glassy and semicrystalline polymers

Charitos, Ilias; Mouzakis, Dionysios E.; Kontou, E.

doi:10.1002/pen.25195

Cited by 7 publications

(3 citation statements)

References 31 publications

(34 reference statements)

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“…A laser extensometer—type cross‐scanner by Fiedler Optoelektronik GmbH, was used for the strain evaluation. The experimental procedure is presented in detail in [34].…”

Section: Methodsmentioning

confidence: 99%

Thermomechanical performance of biodegradable poly (lactic acid)/carbonaceous hybrid nanocomposites: Comparative study

et al. 2022

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In the present research, a series of hybrid nanocomposites based on polylactic acid (PLA) matrix and mixtures of graphene oxide (GO) with carbon nanotubes (CNTs) or carbon nanofibers (CNFs), at various loadings, were prepared and experimentally studied. Several experimental techniques were employed to analyze the morphology and the thermomechanical performance of the materials, as well as the dielectric properties. The related experimental data support the conclusion that a synergistic effect is exhibited by the PLA/GO/CNT nanocomposites. This effect was verified by the higher mechanical enhancement, the higher crystallinity and the development of conductive paths into the bulk matrix.

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“…A laser extensometer—type cross‐scanner by Fiedler Optoelektronik GmbH, was used for the strain evaluation. The experimental procedure is presented in detail in [34].…”

Section: Methodsmentioning

confidence: 99%

Thermomechanical performance of biodegradable poly (lactic acid)/carbonaceous hybrid nanocomposites: Comparative study

et al. 2022

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“…Even at high loading levels, the addition of graphene decreased the creep displacement by 20.5%. Charitos et al [ 161 ] also reported increased creep resistance of PLA/GO (1 wt%) in comparison with the neat polymer. Similarly, Ramazani et al [ 162 ] also reported an increase in creep resistance of 24% and 41% for PCL/GO and PCL/reduced GO composites (0.1 wt%), respectively.…”

Section: The Potential Of Novel Graphene–polymer Composites For Tendomentioning

confidence: 98%

Potential of Graphene–Polymer Composites for Ligament and Tendon Repair: A Review

et al. 2020

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Tendon/ligament injuries are debilitating conditions that affect the life quality of a great percentage of the adult population. Several challenges still have to be addressed regarding the repair of these tissues, as current treatments show limited success. The use of biocompatible and biodegradable polymeric scaffolds potentially helps accomplish a complete and long‐term functional repair but, unfortunately, these materials lack adequate mechanical properties to be used in such demanding applications. Graphene is a subject of interest for tissue‐repair applications due to its electrical conductivity and mechanical properties. If incorporated adequately, it may significantly improve the physical properties of the composite, even at small loadings. Furthermore, graphene presents a biocompatible surface that may enhance cell adhesion, proliferation and differentiation and demonstrates promising outcomes in several in vitro and in vivo biological applications. Therefore, herein, the potential of graphene materials for the reinforcement of biodegradable polymers of interest for tendon/ligament repair is explored. The effect of graphene on relevant features such as mechanical properties, biodegradability, and biocompatibility is revised, to understand the feasibility of these composites to fulfill the requirements associated with these tissues and conclude how their applicability is extended to this field.

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“…[2,8] Although graphene has these desirable properties, largescale fabrication of the monolayer structure is difficult and costly. Various graphene derivatives have been used to reinforce the polymers such as graphene oxide (GO), [9,10] reduced graphene oxide (rGO), [11] expanded graphite, and GNP. [8,12] However, especially the high costs of GO and rGO and the harsh chemicals used in their production limit their industrial applications.…”

Section: Introductionmentioning

confidence: 99%

Enhanced mechanical and thermal properties of graphene nanoplatelets‐reinforced polyamide11/poly(lactic acid) nanocomposites

Durmaz

Aytaç

2022

Polymer Engineering & Sci

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The present paper aims to obtain a sustainable nanocomposite by using bio‐based polyamide 11 and biodegradable poly (lactic acid) blend as matrix and graphene nanoplatelets (GNP) as nanofiller. GNP was incorporated in the PA11/PLA blend matrix in the ratio of 0.5‐1‐3‐5‐10 wt% through the twin‐screw extruder. The crystallinity of PA11 in the blend, which was 12.9%, increased with the inclusion of GNP, and the highest crystallinity value was observed at 20% for the 1GNP sample. The crystallinity of PLA in the blend, which was 2.3%, increased to 4.6% with 5 wt% GNP addition. The inclusion of GNP to PA11/PLA improved the thermal degradation temperatures and increase the char residue. Also, increments were observed for storage modulus, loss modulus, and glass transition temperature of the matrix with the inclusion of GNP. The addition of GNP caused the tensile strength of the matrix to increase first and then decrease at higher amounts due to the agglomerations. 0.5–1 wt% GNP increased tensile strength by 10% and 5%, respectively. Increasing the amount of GNP to 10 wt% led to a sharp decrease in tensile strength by 24%. Overall, GNP is a suitable nanofiller to enhance the thermal and mechanical features of the PA11/PLA blend.

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Comparing the rheological and reinforcing effects of graphene oxide on glassy and semicrystalline polymers

Cited by 7 publications

References 31 publications

Thermomechanical performance of biodegradable poly (lactic acid)/carbonaceous hybrid nanocomposites: Comparative study

Thermomechanical performance of biodegradable poly (lactic acid)/carbonaceous hybrid nanocomposites: Comparative study

Potential of Graphene–Polymer Composites for Ligament and Tendon Repair: A Review

Enhanced mechanical and thermal properties of graphene nanoplatelets‐reinforced polyamide11/poly(lactic acid) nanocomposites

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