Adsorption of epichlorohydrin-dimethylamine at the SiC-water interface: A study on wetting, electrokinetics, dispersion stability

Niu, Yifan; Zhang, Wenxiao; Zhai, Chaoyang; Liu, Jiaxiang; Yang, Tianyu

doi:10.1016/j.colsurfa.2021.126947

Cited by 3 publications

(3 citation statements)

References 56 publications

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“…Compared with other dispersants, the modified SiC slurry by SL had the lower viscosity at the same or higher solid loading. Without doubt, the dispersion of SiC powder modified by SL was the best. ,− …”

Section: Resultsmentioning

confidence: 98%

Adsorption and Dispersion Effect of Sodium Lignosulfonate on Fine SiC Particles in Aqueous Media

Zhang,

Zheng

et al. 2023

Langmuir

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This study presented a novel modification method for fine SiC powder by using sodium lignosulfonate as a dispersant. The adsorption behavior of sodium lignosulfonate on the SiC/water interface and its effect on the performance of a fine SiC slurry were systematically investigated. The adsorption results showed that sodium lignosulfonate formed monolayer adsorption on the surface of fine SiC and that the saturated adsorption capacity was 1.3263 mg/g. The adsorption reached equilibrium within 3 h and was mainly controlled by active sites on the SiC surface. The dispersion, stability, and zeta potential of modified SiC powder were improved after sodium lignosulfonate adsorption. The zeta potential of modified SiC reached a minimum value of −44.8 mV at pH 12. Modified SiC suspensions had great stability in a wider pH range of 6− 12. Modified SiC slurry with 54 vol % solid loading had a low viscosity of 173 mPa•s at pH 10. Subsequently, coarse SiC powder was added for slip casting. A mixed slurry with high solid loading (69 vol %) and low viscosity (583 mPa•s) was prepared using modified SiC and coarse SiC powders at a mass ratio of 2:3. Finally, recrystallized SiC green body with high density (2.6492 g/cm 3 ) was obtained.

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Section: Resultsmentioning

confidence: 98%

Adsorption and Dispersion Effect of Sodium Lignosulfonate on Fine SiC Particles in Aqueous Media

Zhang,

Zheng

et al. 2023

Langmuir

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“…Then, the residual amount of EPI–DMA in the supernatant was measured by using PVSK and TB solution as a titrant and a dye indicator, respectively. The literature reported the calibration equation between EPI–DMA amount and PVSK volume was y = 0.4017 x − 0.0373 ( R 2 = 0.99943) 34 . Thus, EPI–DMA amount reacting with PSS was determined by the difference between the initial amount and the residual amount.…”

Section: Methodsmentioning

confidence: 99%

“…The literature reported the calibration equation between EPI-DMA amount and PVSK volume was y = 0.4017x − 0.0373 (R 2 = 0.99943). 34 Thus, EPI-DMA amount reacting with PSS was determined by the difference between the initial amount and the residual amount. As shown in Figure S2, the calibration equation between PSS amount and EPI-DMA amount was established as y = 1.9154x − 0.0483 (R 2 = 0.99954).…”

Section: Characterizationmentioning

confidence: 99%

Adsorption of anionic polyelectrolyte on an SiC surface and effects on dispersion stability

Zhang

Niu

et al. 2022

J Am Ceram Soc.

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Aluminum nitrate (Al(NO3)3) and sodium polystyrene sulfonate (PSS) were used to improve the dispersion of fine silicon carbide (SiC) powders. Effects of modification parameters on the viscosity of modified SiC slurry were studied by orthogonal experiments. Modified SiC slurry with the solid loading of 50 vol% reached the lowest viscosity of 34 MPa s. The adsorption processes of PSS on the as‐received and Al(NO3)3 premodified SiC surface were investigated. The results indicated that the adsorption between PSS and premodified SiC surfaces was a high affinity type and was mainly controlled by active sites on an SiC surface. The Langmuir model and the pseudo‐second‐order model could better fit the adsorption isotherm and kinetics data, respectively. The contact angle decreased from 32.8 to 15.2° and the wettability was improved by modification. The isoelectric point of modified SiC powder shifted to the acidic region and the maximum zeta potential was obtained at pH 11. Sedimentation results also showed that a stable dispersed suspension of modified SiC was achieved at pH 11. Density–pressure curves demonstrated that the flowability and formability of SiC powder were improved by modification. The dispersion effect of PSS on SiC and Al2O3 composite powder was verified by viscosity and sedimentation results.

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Polymeric polyamine: a systematic study on synthesis, characterisation and its application for removal of reactive dye

Kumar,

Thakare,

Rathore

et al. 2024

Int. J. Environ. Sci. Technol.

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Adsorption of epichlorohydrin-dimethylamine at the SiC-water interface: A study on wetting, electrokinetics, dispersion stability

Cited by 3 publications

References 56 publications

Adsorption and Dispersion Effect of Sodium Lignosulfonate on Fine SiC Particles in Aqueous Media

Adsorption and Dispersion Effect of Sodium Lignosulfonate on Fine SiC Particles in Aqueous Media

Adsorption of anionic polyelectrolyte on an SiC surface and effects on dispersion stability

Polymeric polyamine: a systematic study on synthesis, characterisation and its application for removal of reactive dye

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