Preparation of functionalized graphene by simultaneous reduction and surface modification and its polymethyl methacrylate composites through latex technology and melt blending

Jiang, Saihua; Gui, Zhilun; Bao, Chenlu; Dai, Kang; Wang, Xin; Zhou, Keqing; Shi, Yongqian; Lo, Siuming; Hu, Yuan

doi:10.1016/j.cej.2013.04.068

Cited by 85 publications

(57 citation statements)

References 43 publications

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“…Graphene/polymer composites can be prepared by various blending techniques such as melt, solution, and physical blending, as well as via emulsion based in situ polymerization . In melt blending, where graphene is mixed with molten polymer, the thermal instability of graphene is problematic due to the very high temperature required to reduce the typically high viscosity of polymer melts .…”

Section: Introductionmentioning

confidence: 99%

“…These approaches allow subsequent film formation with improved physical, mechanical, thermal, and electrical properties while reducing the overall number of synthesis steps compared with blending methods . An extensive body of research has been published on emulsion based polymerization techniques for synthesis of graphene‐based composites . However, these works incorporate low‐molecular‐weight surfactants to improve the colloidal stability.…”

Section: Introductionmentioning

confidence: 99%

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Formation of homogeneous nanocomposite films at ambient temperature via miniemulsion polymerization using graphene oxide as surfactant

Fadil

Man

Jasinski

et al. 2017

J. Polym. Sci. Part A: Polym. Chem.

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A convenient and industrially scalable method for synthesis of homogeneous nanocomposite films comprising poly(styrene‐stat‐butyl acrylate) and nanodimensional graphene oxide (GO) or reduced GO (rGO) is presented. Importantly, the nanocomposite latex undergoes film formation at ambient temperature, thus alleviating any need for high temperature or high pressure methods such as compression molding. The method entails synthesis of an aqueous nanocomposite latex via miniemulsion copolymerization relying on nanodimensional GO sheets as sole surfactant, followed by ambient temperature film formation resulting in homogeneous film. For comparison, a similar latex obtained by physical mixing of a polymer latex with an aqueous GO dispersion results in severe phase separation, illustrating that the miniemulsion approach using GO as surfactant is key to obtaining homogeneous nanocomposite films. Finally, it is demonstrated that the GO sheets can be readily reduced to rGO in situ by heat treatment of the film. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2017, 55, 2289–2297

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Formation of homogeneous nanocomposite films at ambient temperature via miniemulsion polymerization using graphene oxide as surfactant

Fadil

Man

Jasinski

et al. 2017

J. Polym. Sci. Part A: Polym. Chem.

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“…Another type of polymer used for latex based method is PMMA [98]. PMMA was coupling between graphene and organic molecule electronic structures.…”

Section: Accepted M Manuscriptmentioning

confidence: 99%

Graphene-philic surfactants for nanocomposites in latex technology

Mohamed

Ardyani

Bakar

et al. 2016

Advances in Colloid and Interface Science

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Graphene is the newest member of the carbon family, and has revolutionized materials science especially in the field of polymer nanocomposites. However, agglomeration and uniform dispersion remains an Achilles" heel (even an elephant in the room), hampering the optimization of this material for practical applications. Chemical functionalization of graphene can overcome these hurdles but is often rather disruptive to the extended piconjugation, altering the desired physical and electronic properties. Employing surfactants as stabilizing agents in latex technology circumvents the need for chemical modification allowing for the formation of nanocomposites with retained graphene properties. This article reviews the recent progress in the use of surfactants and polymers to prepare graphene/polymer nanocomposites via latex technology. Of special interest here are surfactant structure-performance relationships, as well as background on the roles surfactantgraphene interactions for promoting stabilization.

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“…Bao et al [19] found that with the masterbatch-melt-blending technique, graphene can be well dispersed and exfoliated in polystyrene as thin layers and the fire safety properties of PS were obviously improved, getting an increased thermal degradation temperature (18°C, PS/Ni-Gr-2), decreased peak heat release rate (40 %, PS/Zr0-Gr-2), and reduced CO concentration (54 %, PS/Ni-Gr-2). Graphene and functionalized graphene can also be as additive into PMMA and EVA [20,21], which significantly enhanced the thermal stability and mechanical properties of polymers. Huang et al [22] had found graphene can be used as synergism with IFRs and LDHs in PMMA, and they also found graphene can be used as synergism with IFRs and CNTs in PP [23].…”

Section: Introductionmentioning

confidence: 99%

Synergistic effects between iron-graphene and ammonium polyphosphate in flame-retardant thermoplastic polyurethane

Chen

Jiao

2016

J Therm Anal Calorim

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This article mainly studies synergistic flame-retardant effects of iron-graphene (IG) and ammonium polyphosphate (APP) in thermoplastic polyurethane (TPU). A high concentration of TPU/IG masterbatch was prepared by solution-blending method, and the TPU/APP/IG composites were prepared by melt-blending method. Then, the synergistic effects between iron-graphene and ammonium polyphosphate in flame-retardant TPU were investigated by limiting oxygen index (LOI), cone calorimeter test, and thermogravimetric/Fourier infrared spectrum (TG-IR), respectively. Remarkably, the combination of 0.25 mass% IG and 9.75 mass% APP can make the LOI value increase by 38.3 %, HRR value decrease by 92.8 %, and SPR value decrease by 72.8 %, etc. TG and TG-IR data reveal that APP and IG improve the thermal stability of samples at high temperature and reduce the production of some toxic gases.

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Preparation of functionalized graphene by simultaneous reduction and surface modification and its polymethyl methacrylate composites through latex technology and melt blending

Cited by 85 publications

References 43 publications

Formation of homogeneous nanocomposite films at ambient temperature via miniemulsion polymerization using graphene oxide as surfactant

Formation of homogeneous nanocomposite films at ambient temperature via miniemulsion polymerization using graphene oxide as surfactant

Graphene-philic surfactants for nanocomposites in latex technology

Synergistic effects between iron-graphene and ammonium polyphosphate in flame-retardant thermoplastic polyurethane

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