High performance polyurethane/functionalized graphene nanocomposites with improved mechanical and thermal properties

Cai, Dongyu; Jin, Jie; Yusoh, Kamal; Rafiq, Rehman; Song, Mo

doi:10.1016/j.compscitech.2012.01.020

Cited by 174 publications

(100 citation statements)

References 20 publications

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“…Therefore, the soft segments provide high elongation while hard segments provide stiffness in PUHC. Previous work has shown that growth in hard segment content gives rise to an increase in tensile modulus, ultimate strength and yield strength, and a decrease in elongation at break . After adding each of the components to the PU, an increase in tensile strength was observed (Table ) that agrees with other published results …”

Section: Resultssupporting

confidence: 90%

Conductive Tough Hydrogel for Bioapplications

Javadi

Naficy

et al. 2017

Macromolecular Bioscience

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Biocompatible conductive tough hydrogels represent a new class of advanced materials combining the properties of tough hydrogels and biocompatible conductors. Here, a simple method, to achieve a self-assembled tough elastomeric composite structure that is biocompatible, conductive, and with high flexibility, is reported. The hydrogel comprises polyether-based liner polyurethane (PU), poly(3,4-ethylenedioxythiophene) (PEDOT) doped with poly(4-styrenesulfonate) (PSS), and liquid crystal graphene oxide (LCGO). The polyurethane hybrid composite (PUHC) containing the PEDOT:PSS, LCGO, and PU has a higher electrical conductivity (10×), tensile modulus (>1.6×), and yield strength (>1.56×) compared to respective control samples. Furthermore, the PUHC is biocompatible and can support human neural stem cell (NSC) growth and differentiation to neurons and supporting neuroglia. Moreover, the stimulation of PUHC enhances NSC differentiation with enhanced neuritogenesis compared to unstimulated cultures. A model describing the synergistic effects of the PUHC components and their influence on the uniformity, biocompatibility, and electromechanical properties of the hydrogel is presented.

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Section: Resultssupporting

confidence: 90%

Conductive Tough Hydrogel for Bioapplications

Javadi

Naficy

et al. 2017

Macromolecular Bioscience

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“…[1][2][3][4][5] The enhanced corrosion protection properties of coatings containing nanoparticles have been attributed to their increased barrier properties, as the reinforcing particles/filler provide a more tortuous path for corrosive agents. 6 Nanoparticles have a high specific surface area and surface energy, the combination of which results in an increased tendency to interact with each other and form aggregates and agglomerates.…”

Section: Introductionmentioning

confidence: 99%

The Corrosion Protection Performance of the Polyurethane Coatings Containing Surface Modified Fe₂O₃Nanoparticles

Palimi¹,

Rostami²,

Mahdavian³

et al. 2015

CORROSION

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Fe 2 O 3 nanoparticles were modified with 3-amino propyl trimethoxy silane (APTMS) by a sol-gel method. The surface chemistry of the Fe 2 O 3 nanoparticles was studied by Fourier transform infrared spectroscopy, which confirmed the successful grafting of the organic functional groups of APTMS onto the nanoparticle. Polyurethane composites were prepared by the incorporation of 1, 2, and 3 wt% of modified and unmodified Fe 2 O 3 nanoparticles. The surface morphology of the composites and distribution of the nanoparticles were investigated by field emission scanning electron microscopy. The composites were applied on the mild steel substrates. The adhesion strength of the composites was determined by a pull-off adhesion tester. The effect of nanoparticles on the electrochemical and corrosion behaviors of the coatings was investigated in a 3.5% NaCl solution, using electrochemical impedance spectroscopy and a salt spray test. Results showed that incorporation of 2 wt% modified Fe 2 O 3 nanoparticles significantly improved the corrosion resistance and recovery adhesion strength of the polyurethane coating compared to the blank coating and the one containing unmodified nanoparticles. KEY WORDS: 3-amino propyl trimethoxy silane, adhesion, electrochemical impedance spectroscopy, Fe 2 O 3 nanoparticle, polyurethane, salt spray ISSN 0010-9312 (print), 1938-159X (online) 15/000165/$5.00+$0.50/0 © 2015, NACE International CORROSION SCIENCE SECTION

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“…Many groups have reported on GO reinforced polymer nanocomposites using hydrophilic polymers, such as poly(ethylene oxide) (PEO) [17,18] or poly (vinyl alcohol) (PVA) [19][20][21]. 3 Nanocomposites with GO have also been produced using hydrophobic polymers, including polystyrene (PS) [8,22] and polyurethane (PU) [23,24]. In the case of poly(methyl methacrylate) PMMA, three methods have been used to improve the PMMA-GO dispersion:…”

Section: Introductionmentioning

confidence: 99%

Graphene oxide and base-washed graphene oxide as reinforcements in PMMA nanocomposites

Vallés

Kinloch

Young

et al. 2013

Composites Science and Technology

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High performance polyurethane/functionalized graphene nanocomposites with improved mechanical and thermal properties

Cited by 174 publications

References 20 publications

Conductive Tough Hydrogel for Bioapplications

Conductive Tough Hydrogel for Bioapplications

The Corrosion Protection Performance of the Polyurethane Coatings Containing Surface Modified Fe₂O₃Nanoparticles

Graphene oxide and base-washed graphene oxide as reinforcements in PMMA nanocomposites

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High performance polyurethane/functionalized graphene nanocomposites with improved mechanical and thermal properties

Cited by 174 publications

References 20 publications

Conductive Tough Hydrogel for Bioapplications

Conductive Tough Hydrogel for Bioapplications

The Corrosion Protection Performance of the Polyurethane Coatings Containing Surface Modified Fe2O3Nanoparticles

Graphene oxide and base-washed graphene oxide as reinforcements in PMMA nanocomposites

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Product

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The Corrosion Protection Performance of the Polyurethane Coatings Containing Surface Modified Fe₂O₃Nanoparticles