Encapsulation of surface-modified carbon blacks by poly(sodium-p-styrenesulfonate) via a phase separation method

Jin, Shenbo; Li, Qiuying; Wu, Chifei

doi:10.1016/j.powtec.2015.04.011

Cited by 8 publications

(7 citation statements)

References 22 publications

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“…Raman spectroscopy was a helpful method to explore the structure changes of samples. To accurately analyze the contribution of D band (~1340 cm −1 ), G band (~1600 cm −1 ) and A band (~1550 cm −1 ), Raman spectra were fitted to identify the three bands . The D band was decided by the amorphous regions of CB.…”

Section: Resultsmentioning

confidence: 99%

Surface modification and characterization of carbon black by sodium lignosulphonate

Li¹,

Liu²,

Fu³

et al. 2016

Surface & Interface Analysis

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Carbon black (CB) was encapsulated by the sodium lignosulphonate via the strong π-π* interaction force of aromatic ring in the planetary ball milling instrument. The use of new surfactant and ball milling instrument met the requirements about the low-cost standard and provided an important sense to industrialization in comparison with the old surfactant, the poly(sodium 4-styrenesulfonate). The successful encapsulation was confirmed by Raman spectroscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy and thermal gravimetric analysis. Encapsulation ratio of the modified CB increased to 15.9% when CB was prepared at longer milling time and with agate balls in different size. The morphology and dispersibility of samples studied by transmission electron microscope, sedimentation experiment and ultraviolet-visible spectroscopy showed that the modified CB dispersed stably in the deionized water. The average diameter and absolute value of zeta potential of the modified CB decreased and increased compared with those of CB, respectively, which confirmed further that sodium lignosulphonate encapsulated on the surface of CB make CB disperse better. In addition, the average diameter and zeta potential of the samples were affected by ball milling conditions. The modified CB prepared at longer milling time and with different sizes of agate balls had better dispersibility than the ones prepared at shorter milling time and with same size of agate balls.

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Section: Resultsmentioning

confidence: 99%

Surface modification and characterization of carbon black by sodium lignosulphonate

Li¹,

Liu²,

Fu³

et al. 2016

Surface & Interface Analysis

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“…Two relatively broad bands can be observed in the Raman spectra. The G-band at 1580 cm −1 is attributed to the presence of a graphitic structure and the D-band at ∼1350 cm −1 is attributed to the amorphous carbon [26,37,38]. As shown in Fig.…”

Section: U N C O R R E C T E D P R O O Fmentioning

confidence: 88%

“…The FWHM of the D band reflects the outer edge of the aromatic structure of carbon [39]. The highest FWHM of CB lp -280 among the four samples suggests more free benzene rings introduced by the SBR chains around CB lp -280 [26].…”

Section: U N C O R R E C T E D P R O O Fmentioning

confidence: 94%

“…The weight loss decreases in the sequence of CB lp -260, CB lp -280 and CB lp -300, indicating the rubber shell content is dependent on the processing temperature. A higher processing temperature removes the loosely bound rubber chains, resulting in a thinner rubber shell structure [26,27]. Therefore, the thermal stability of CB lp is affected by the light pyrolysis temperature.…”

Section: Tga Analysismentioning

confidence: 99%

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Separation of core-shell structured carbon black nanoparticles from waste tires by light pyrolysis

Wan

Wang

et al. 2016

Composites Science and Technology

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The separation of core-shell structured carbon black (CB lp ) nanoparticles from waste tires was investigated by applying a reactive extrusion process. The polymeric shell consisting primarily of crosslinked rubber and loosely bound rubber could be selectively separated by varying the extrusion temperature to 260, 280 and 300°C. The structure, chemical composition and structure of the separated CB lp were characterized using thermo-gravimetric analysis, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy and dynamic light scattering. The crosslinked structure was persevered in the rubber shell of CB lp after extruding at 260°C. A layer of loosely bound rubber was observed only in the rubber shell when extruded at 280°C and 300°C. The composition of the bound rubber layer is also dependent on the processing temperature.

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“…Recently, nanostructure microwave absorber materials have attracted considerable attention because of their magical properties . The low‐cost carbon black (CB) nanoparticles consist of 97%–99% elemental carbon , which have good chemical stability, heat resistance, and electrical conductivity , it is widely used in coatings , reinforcing filler , and as an adsorbent material with dielectric loss tangent of 0.35–0.83 . To the best of our knowledge there is no study relating to the use of CB in the PAN pre‐oxidation via microwave heating.…”

Section: Introductionmentioning

confidence: 99%

Microwave pre‐oxidation for polyacrylonitrile precursor coated with nano‐carbon black

Elagib

Hassan

Cheng

et al. 2018

Polymer Engineering & Sci

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A surface coating was successfully applied through dipping the polyacrylonitrile (PAN) precursor fibers in a carbon black (CB) bath containing a hydrolyzed binder. The coated fibers were pre-oxidized over the microwave furnace at temperatures ranging from 100 C to 170 C for different heating times. The changes in chemical structure were studied by Fourier transfer infrared spectroscopy combined with elemental analyzer. X-ray diffraction was employed to study the crystalline structure and its related parameters. Differential scanning calorimeter and thermogravimetry were used for thermal analysis. In addition, the fiber morphology and the mechanical properties were also evaluated. Scanning electron microscopy results confirmed the presence of CB on the surface of PAN precursor. The analysis in the chemical structure showed an apparent response of coated PAN fibers to the microwave heating, since the microwave field induced the cyclization and crosslinking reactions. The crystallinity and the crystallite height decreased. Furthermore, the tensile strength and elongation of pre-oxidized fibers decreased with the increase of heating time. The measured oxygen content revealed that the pre-oxidized fibers can withstand the high temperatures on the following stage (carbonization). POLYM. ENG. SCI., 59:457-464, 2019.

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Encapsulation of surface-modified carbon blacks by poly(sodium-p-styrenesulfonate) via a phase separation method

Cited by 8 publications

References 22 publications

Surface modification and characterization of carbon black by sodium lignosulphonate

Surface modification and characterization of carbon black by sodium lignosulphonate

Separation of core-shell structured carbon black nanoparticles from waste tires by light pyrolysis

Microwave pre‐oxidation for polyacrylonitrile precursor coated with nano‐carbon black

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