Studies on PLA grafting onto graphene oxide and its effect on the ensuing composite films

Campos, Jorge; Ferraria, Ana Maria; Rego, A.M. Botelho do; Ribeiro, M. Rosário; Barros‐Timmons, Ana

doi:10.1016/j.matchemphys.2015.09.036

Cited by 31 publications

(30 citation statements)

References 68 publications

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“…This PLA presented M n B 100 000 g mol À1 determined by size exclusion chromatography against PS standards and Ð B 1.3. 28 Choline dihydrogen phosphate ([Ch][DHP], 498%) was purchased from Iolitec, and methylene chloride (DCM, CH 2 Cl 2 , 100%) from VWR Chemicals. All reagents were used without previous purification.…”

Section: Methodsmentioning

confidence: 99%

Piezoelectric poly(lactide) stereocomplexes with a cholinium organic ionic plastic crystal

et al. 2017

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Section: Methodsmentioning

confidence: 99%

Piezoelectric poly(lactide) stereocomplexes with a cholinium organic ionic plastic crystal

et al. 2017

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“…The PLA-film (red in Fig. 3a) showed four characteristics peaks at 2θ = 15, 17, 19 and 23°that described the alpha form of PLA [58]. PLA crystalline peaks disappeared after filament extrusion (green).…”

Section: Structural Characterization Of Pla/go Scaffoldsmentioning

confidence: 99%

Development of new biocompatible 3D printed graphene oxide-based scaffolds

Belaid

Nagarajan

Teyssier

et al. 2020

Materials Science and Engineering: C

117

111

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The aim of this work was to develop a bioresorbable, biodegradable and biocompatible synthetic polymer with good mechanical properties for bone tissue engineering applications. Polylactic acid (PLA) scaffolds were generated by 3D printing using the fused deposition modelling method, and reinforced by incorporation of graphene oxide (GO). Morphological analysis by scanning electron microscopy indicated that the scaffold average pore size was between 400 and 500 μm. Topography imaging revealed a rougher surface upon GO incorporation (Sa = 5.8 μm for PLA scaffolds, and of 9.9 μm for PLA scaffolds with 0.2% GO), and contact angle measurements showed a transition from a hydrophobic surface (pure PLA scaffolds) to a hydrophilic surface after GO incorporation. PLA thermomechanical properties were enhanced by GO incorporation, as shown by the 70 °C increase of the degradation peak (thermal gravimetric analysis). However, GO incorporation did not change significantly the melting point assessed by differential scanning calorimetry. Physicochemical analyses by X-ray diffraction and Raman spectroscopy confirmed the filler presence. Tensile testing demonstrated that the mechanical properties were improved upon GO incorporation (30% increase of the Young's modulus with 0.3%GO). Cell viability, attachment, proliferation and differentiation assays using MG-63 osteosarcoma cells showed that PLA/ GO scaffolds were biocompatible and that they promoted cell proliferation and mineralization more efficiently than pure PLA scaffolds. In conclusion, this new 3D printed nanocomposite is a promising scaffold with adequate mechanical properties and cytocompatibility which may allow bone formation.

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“…The nanocomposites were made by solvent casting. The mechanical properties also improved over a broad temperature range, which is primarily attributed to their uniform dispersibility …”

Section: Reinforcing Pla‐based Materials Through Nanocompositesmentioning

confidence: 96%

“…Azide functionalized graphene oxide–PLA blended with PLA to improve thermal stability and mechanical strength …”

Section: Reinforcing Pla‐based Materials Through Nanocompositesmentioning

confidence: 99%

Poly(lactic acid)‐based nanocomposites

Basu

Nazarkovsky

Ghadi

et al. 2016

Polymers for Advanced Techs

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Classic plastics accumulate in nature causing environmental pollution, yet as a counterbalance they benefit society in many ways. They are versatile, cost‐effective, and can be tailored to have desired properties. The global environment has led to the fabrication of commodity plastics from environmentally degradable polymers. Poly(lactic acid) (PLA) is the most promising among the environmentally friendly polymers available. PLA‐based plastics have mechanical, thermal, and transparency similar to traditional plastics, and they can be molded and fabricated using the same equipment and procedures. Their material properties are enhanced through nanocomposites, compatibilizers, plasticizers, and other fillers (flame retardant, ultraviolet filter, etc.). This review summarizes mass production techniques and property reinforcements (focusing on nanocomposites and plasticizers) for PLA‐based plastics for commodity use. Copyright © 2016 John Wiley & Sons, Ltd.

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Studies on PLA grafting onto graphene oxide and its effect on the ensuing composite films

Cited by 31 publications

References 68 publications

Piezoelectric poly(lactide) stereocomplexes with a cholinium organic ionic plastic crystal

Piezoelectric poly(lactide) stereocomplexes with a cholinium organic ionic plastic crystal

Development of new biocompatible 3D printed graphene oxide-based scaffolds

Poly(lactic acid)‐based nanocomposites

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