Sodium alginate/graphene oxide composite films with enhanced thermal and mechanical properties

Ioniță, Mariana; Pandele, Andreea Mădălina; Iovu, Horia

doi:10.1016/j.carbpol.2013.01.065

Cited by 337 publications

(212 citation statements)

References 25 publications

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“…Figure 4 shows the chemical interaction between GO/alginate nanocomposites. [81] XRD studies confirmed the solely physical interaction of alginate and GO with the formation of nanocomposites and d spacing of GO increased from 8.06 to 17 Åwhen incorporated in alginate which confirmed the intercalated structure of the nanocomposite. In addition, the incorporation of GO led to further broadening of the broad diffraction peak at 13 .…”

Section: Alginate Filmsmentioning

confidence: 55%

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Graphene Oxide/Polymer‐Based Biomaterials

2017

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Since its discovery in 2004, derivatives of graphene have been developed and heavily investigated in the field of tissue engineering. Among the most extensively studied forms of graphene, graphene oxide (GO), and GO/ polymer-based nanocomposites have attracted great attention in various forms such as films, 3D porous scaffolds, electrospun mats, hydrogels, and nacre-like structures. In this review, the most actively investigated GO/ polymer nanocomposites are presented and discussed, these nanocomposites are based on chitosan, cellulose, starch, alginate, gellan gum, poly(vinyl alcohol) (PVA), poly(acrylamide), poly(e-caprolactone) (PCL), poly(lactic acid) (PLLA), poly(lactide-co-glycolide) (PLGA), gelatin, collagen, and silk fibroin (SF). The biological and mechanical performance of such nanocomposites are comprehensively scrutinized and ongoing research questions are addressed. The analysis of the literature reveals overall the great potential of GO/ polymer nanocomposites in tissue engineering strategies and indicates also a series of challenges requiring further research efforts.

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Section: Alginate Filmsmentioning

confidence: 55%

“…[81,82] Ionita et al [81] produced GO/ alginate films by casting to improve the mechanical properties and physical integrity of GO. In addition, by inducing electroactivity, cell growth could be stimulated.…”

Section: Alginate Filmsmentioning

confidence: 99%

Graphene Oxide/Polymer‐Based Biomaterials

2017

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“…A previous X-ray diffractometry (XRD) study, reported in [6], showed that a characteristic peak of a GO spectrum shifted towards lower angle values for GO-Alg nanocomposites. This observation revealed that morphology of GO flakes was intercalated.…”

Section: Experimental and Modelling Details Characterizationmentioning

confidence: 96%

“…A type of polymer is also an important matter to consider for compatibility with oxidized graphene. Ionita et al [6] analysed alginate (Alg)-based GO nanocomposites (GO-Alg) and found good compatibility between functional groups of GO and alginate. GO-Alg nanocomposites are the main focus of this study.…”

Section: Introductionmentioning

confidence: 99%

“…Many studies employed the HT micromechanical model that was originally formulated for nanocomposites both with unidirectional and randomly oriented particles [13] for prediction of the Young's modulus of graphene nanocomposites [12,[14][15][16]. In this study, only the version for unidirectional alignment is considered since the microstructural analysis demonstrated that reinforcements are preferentially aligned [6]. Another analytical model, by Tandon and Weng (TW), which was derived from the MT method [17], is also used in the literature for calculation of the Young's modulus of graphenereinforced nanocomposites [9,18,19].…”

Section: Introductionmentioning

confidence: 99%

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Effect of morphological state of graphene on mechanical properties of nanocomposites

et al. 2016

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In the last decade, graphene has emerged as one of the best-performing reinforcement materials for nanocomposites. Incorporation of graphene into polymer results in a nanocomposite with a new microstructure responsible for its enhanced features. A morphological state of graphene flakes is one of the factors that govern formation of microstructure. Studies showed that graphene-oxide (GO) flakes can be found either as fully exfoliated or intercalated in polymerbased nanocomposites. While traditional parameters are commonly taken into consideration in theoretical assessment of properties of composites by means of micromechanical models, the morphological state is often ignored. This research aims to investigate the effect of morphological state of GO flakes on stiffness of nanocomposites with widely used micromechanical models, e.g., rule of mixtures, Hui-Shia and Halpin-Tsai. Pure sodium alginate and nanocomposites on its basis reinforced with 1.0 and 2.5 wt% GO were used in the study. Parameters required for modelling were quantified with microstructural characterisation. Micromechanical models were adapted to account for the morphological state of intercalation observed in the characterisation study. Tensile experiments were employed to assess the adopted models, and the effect matrix stiffness, GO thickness, spacing of intercalates as well as the Poisson's ratio and stiffness of inter-flake polymer layers was studied.

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Alginate‐based Films and Membranes: Preparation, Characterization and Applications

2016

Nanostructured Polymer Membranes

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Sodium alginate/graphene oxide composite films with enhanced thermal and mechanical properties

Cited by 337 publications

References 25 publications

Graphene Oxide/Polymer‐Based Biomaterials

Graphene Oxide/Polymer‐Based Biomaterials

Effect of morphological state of graphene on mechanical properties of nanocomposites

Alginate‐based Films and Membranes: Preparation, Characterization and Applications

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