Dispersion and stability of carbon black nanoparticles, studied by ultraviolet–visible spectroscopy

Sh., M. Sharif; Fard, F. Golestani; Khatibi, Elahe; Sarpoolaky, H.

doi:10.1016/j.jtice.2009.03.006

Cited by 54 publications

(21 citation statements)

References 13 publications

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“…Sharif et al [ 80 ] examined the dispersion of CB, i.e., zero dimensional graphene in the presence of five dispersants, including Dispex G40, sodium dodecylbenzene sulfonate (NaDDBS, MW = 348.47), Tween 80, t -octylphenol decaethylene glycol ether (Triton X-100, MW = 647), and Dispex N40. They concluded that most favourable dispersant was Triton X-100, a surfactant molecule, as it showed the highest absorption peak in the UV-vis absorption spectra, as presented in Figure 5 .…”

Section: Dispersion Of Graphene Based Nanomaterialsmentioning

confidence: 99%

“…Moreover, Aunkor et al [ 88 ] research state that the absorption peak value is a function of the concentration of dispersed graphene sheets. Sharif et al [ 80 ] investigated the dispersion of CB applying UV-vis spectroscopy and determined the rise in UV-vis absorption related to the surface area of nanomaterials ( Figure 9 ). They used four types of carbon black with varying surface areas and determined the highest dispersion values for CB having the highest surface area.…”

Section: Dispersion Of Graphene Based Nanomaterialsmentioning

confidence: 99%

“… UV–vis absorption spectra for dispersion efficiency of various types of CB in aqueous solution. Reproduced with permission from [ 80 ], Elsevier, 2009. …”

Section: Figurementioning

confidence: 99%

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A Review of Microscale, Rheological, Mechanical, Thermoelectrical and Piezoresistive Properties of Graphene Based Cement Composite

et al. 2020

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Extensive research on functionalized graphene, graphene oxide, and carbon nanotube based cement composites has been carried out to strengthen and overcome the shortcomings of construction materials. However, less literature is available on the pure graphene based cement composite. In this review paper, an in-depth study on a graphene-based cement composite was performed. Various structural forms of graphene and classifications of graphene-based nanomaterial have been presented. The dispersion mechanism and techniques, which are important for effective utilization in the construction industry, are reviewed critically. Micro-scale characterization of carbon-based cement composite using thermogravimetric analysis (TGA), infrared (IR) spectroscopic analysis, x-ray diffractometric (XRD) analysis, and morphological analysis has also been reviewed. As per the authors’ knowledge, for the first time, a review of flow, energy harvesting, thermoelectrical, and self-sensing properties of graphene and its derivatives as the bases of cement composite are presented. The self-sensing properties of the composite material are reported by exploring physical applications by reinforcing graphene nanoplatelets (GNPs) into concrete beams.

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Section: Dispersion Of Graphene Based Nanomaterialsmentioning

confidence: 99%

Section: Dispersion Of Graphene Based Nanomaterialsmentioning

confidence: 99%

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A Review of Microscale, Rheological, Mechanical, Thermoelectrical and Piezoresistive Properties of Graphene Based Cement Composite

et al. 2020

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“…Carbon black is an organic pigment, composed of about 97-99% elemental carbon, which can provide color, thermal conductivity, and protection against ultraviolet degradation [8,15]. Carbon black is of great interest due to its wide use in the rubber, plastic, and composite materials industry [16]. Common plastics such as polyethylene and polypropylene with adequate carbon black pigmentation are used to absorb solar radiation [17,18].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of a biodegradable color concentrate in bags for coffee seedlings

Parra-Campos

Alban-Bolaños

Castillo

et al. 2020

DYNA

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The aim of this study was to evaluate different formulations of a biodegradable black concentrate obtained from cassava starch and carbon black, on the mechanical properties, color, and water absorption of a film destined to the production of biodegradable bags for coffee seedlings. The modulus of elasticity, tensile strength and elongation properties is found to show significant variation due to the pigment, plasticizer, and lubricant concentration, both longitudinally and transversely of the film, the treatment being 40% pigment with the absence of plasticizer and lubricant for the pigment, which presented greater integrity in the mechanical properties evaluated in both directions. It is also noticeable that the different masterbatch formulations had an influence on the changes in the color parameters and weight gain of the film by the influence of water absorption.

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“…The CB dispersion in the composite strongly affects its conduction response which is determined by the percolation limit [19,20], also known as percolation threshold [21,22], that the conductive filler content exceeds a critical concentration to form conductive network. There are several processes to homogeneous disperse CB particle in an insulating matrix [23,24], such as surfactant addition [17,[25][26][27] drawbacks limiting the use of conventional conductive coating. For example, the solvent of conventional conductive coating are often used such as benzene and ketone which are of high toxicity, harmful to human and its conductivity cannot meet conductive requirement.…”

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confidence: 99%

Dispersion and resistivity optimization of conductive carbon black in environment‐friendly conductive coating based on acrylic resin

Liu

Lei

et al. 2014

Polymer Composites

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A designated chemical structure, determined through the analysis of elements and groups on the surface of conductive carbon black (CB), alcohol-soluble acrylic resin used for dispersion of conductive CB was successfully prepared based on the principles of similar structure complex well. The content of acrylic acid, glass transition temperature (T g ), molecular weight (M w ), self-crosslinking degree, and N-hydroxymethyl acrylamide content were investigated to optimize the electrical conductivity and dispersion effect of conductive CB in coating. The composites of acrylic resin and conductive CB were characterized by X-ray photoelectron spectroscopy for surface chemical structure on CB, scanning electron microscopy for morphology of conductive coating, Fourier transform infrared for groups in acrylic resin, and digital multimeter techniques for surface resistivity of conductive coating. The optimum surface resistivity of the acquired conductive coating could reach 600 ohm/sq, showing an excellent conductive property. Moreover, the conductive coating still maintained a lower resistivity after salt spray and weather resistance test. POLYM. COMPOS., 36:467-474, 2015. V C 2014 Society of Plastics Engineers INTRODUCTIONConductive coatings are mainly required for static charge dissipation and electromagnetic interference (EMI) shielding [1][2][3][4][5]. EMI can cause critical problems such as influencing the normal running of various electronic instruments and deteriorating of human health [6,7]. The shielding of EMI in some devices has become a necessary issue as the regulations on EMI become more restrictive [8][9][10]. This could be solved through conductive coating coated on the surface of device. However, coatings are inherently nonconducting and would provide no shielding effect [6]. To produce a coating, which is conductive, conceptually, there are three methods possible to design conductive coating: (1) utilize conductive polymers as the continuous matrix; (2) incorporate conductive pigments at sufficient pigment volume concentration; and (3) combinations of both the methods above [3]. Conductive polymers such as polyacetylene, polypyrrole [11], and polyaniline are of interest in both academic and industry applications [1]. But most of them have difficult in processing with conventional methods [12]. Conductive coating prepared by incorporating conductive filler as the ease of chemical synthesis and processing is receiving more attentions.Acrylic resin has been widely investigated due to its suitable appearance, easy to coat, enough adhesive force, etc. However, the resistivity of acrylic resin was not enough to act as EMI, antistatic, or conductive material. This problem could be solved by filling conductive pigments in the acrylic resin. The common conductive fillers include electrically conductive carbon black (CB) [13], graphite, pure metal [14], conductive polymer, and metal powders [15]. Among these different types of conductive fillers, metals are often high in price, large in proportion, easy to oxide, ...

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Dispersion and stability of carbon black nanoparticles, studied by ultraviolet–visible spectroscopy

Cited by 54 publications

References 13 publications

A Review of Microscale, Rheological, Mechanical, Thermoelectrical and Piezoresistive Properties of Graphene Based Cement Composite

A Review of Microscale, Rheological, Mechanical, Thermoelectrical and Piezoresistive Properties of Graphene Based Cement Composite

Evaluation of a biodegradable color concentrate in bags for coffee seedlings

Dispersion and resistivity optimization of conductive carbon black in environment‐friendly conductive coating based on acrylic resin

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