Aqueous dispersing mechanism study of nonionic polymeric dispersant for organic pigments

Pu, Zhian; Fan, Xin; Su, Jing; Zhu, Min; Jiang, Zhenlin

doi:10.1007/s00396-021-04937-z

Cited by 15 publications

(10 citation statements)

References 52 publications

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“…Unlike SAF-4, the PSAF-6 dispersant has benzene ring skeleton vibration absorption peaks (1512 and 1476 cm −1 ), indicating the effective introduction of phenol structural units into the aliphatic molecular chain. 36,37 Fig. 2a and d show 1 H NMR and 13 C CP/MAS NMR spectra of PSAF-6 and SAF-4.…”

Section: Resultsmentioning

confidence: 99%

“…PSAF-6 and SAF-4 dispersants contained O-H (3449 cm −1 ), C-H (2928 and 2869 cm −1 ), C]O (1703 cm −1 ), C]C (1645 cm −1 ), S]O (1188 cm −1 ) and S-O (1041 cm −1 ), and C-S (768 and 610 cm −1 ). Unlike SAF-4, the PSAF-6 dispersant has benzene ring skeleton vibration absorption peaks (1512 and 1476 cm −1 ), indicating the effective introduction of phenol structural units into the aliphatic molecular chain 36,37. Fig.2a and dshow1 H NMR and13 C CP/ MAS NMR spectra of PSAF-6 and SAF-4.…”

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confidence: 99%

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Improving the steric hindrance effect of linear sulfonated acetone–formaldehyde dispersant and its performance in coal–water slurry

et al. 2022

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Section: Resultsmentioning

confidence: 99%

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confidence: 99%

Improving the steric hindrance effect of linear sulfonated acetone–formaldehyde dispersant and its performance in coal–water slurry

et al. 2022

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“…The nonionic dispersant (code C139963; the hydrophobically-modified product of polyvinyl alcohol; white powder) was supplied by Aladdin Industrial Co., Ltd., China. The nonionic dispersants get adsorbed on the particle surface through their lipophilic group, while their hydrophilic group forms a hydration shell surrounding the particle . The anionic dispersant (code E060234; sodium poly ((naphthalene-formaldehyde) sulfonate); brown powder; purity ≥ 97%) was supplied by Energy Chemical Co., Ltd., China.…”

Section: Methodsmentioning

confidence: 99%

“…The nonionic dispersants get adsorbed on the particle surface through their lipophilic group, while their hydrophilic group forms a hydration shell surrounding the particle. 34 The anionic dispersant (code E060234; sodium poly ((naphthalene-formaldehyde) sulfonate); brown powder; purity ≥ 97%) was supplied by Energy Chemical Co., Ltd., China. The anions of anionic dispersants get adsorbed on the particle surface and endow them with negative charges, and the electrostatic repulsion between particles stabilize the dispersion system.…”

Section: Methodsmentioning

confidence: 99%

Strain-Sensing Composite Nanofiber Filament and Regulation Mechanism of Shoulder Peaks Based on Carbon Nanomaterial Dispersion

Tang

et al. 2023

ACS Appl. Mater. Interfaces

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Conductive polymer composite-based strain sensors are essential components of flexible wearable devices. However, nonmonotonic responses with shoulder peaks limit their practical application. Herein, we innovatively optimized the shoulder-peak phenomenon in a strain-sensing composite nanofiber filament by regulating carbon nanomaterial dispersion. Further, the preparation methods, characteristics, and performances of the filament strain sensors were systematically introduced. On this basis, transmission electron microscopy, finite element analysis, and mathematic and structural evolution models were used to explore the origin of shoulder peaks and explain the sensing mechanism of conductive networks. Results confirmed that the beacon tower-shaped conductive network designed by constructing nanofiller agglomerates could cause strain concentration and resist the Poisson transverse contraction of nanofibers, considerably improving the monotonicity and sensitivity of the sensor. The strain-sensing performance was optimal when the nanofillers were dispersed using 2.5 wt % of an anionic dispersant. The sensor exhibited a maximum detective strain of 120%, an ultralow detection limit of 0.01%, and high sensitivity and linearity of 9.66 and 0.996 within 20% strain, respectively. Moreover, it showed the advantages of a fast response time (120 ms), excellent durability (3000 cycles), anti-interference, washability, and antibacterial capability. Finally, a smart Kinesio tape was developed for protecting/treating the human body and detecting joint/muscle movement via simple sewing.

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“…The pigment has bright color, strong covering and optical properties and has been widely applied in the ink, textile and coatings industries. [1][2][3] The coloring and covering of pigments depend on the size and distribution of pigment particles during application. Therefore, using a dispersant to improve pigment dispersion is the key to improving pigment efficiency.…”

Section: Introductionmentioning

confidence: 99%

Synthesis ofSMA‐PEGhyperdispersant and its stabilization mechanism for carbon black

Kang

Zhu

2023

J of Applied Polymer Sci

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In this paper, four comb hyperdispersants (SMA-MPEGA) with different side chain lengths and side chain densities were prepared by the amide coupling reaction of styrene-maleic anhydride (SMA) copolymer and methoxypolyethylene glycol amine (MPEGA). The dispersion behavior of SMA-MPEGA on carbon black was investigated by rheology and water contact angle measurement. The combined technologies of transmission electron microscopy, digital light synthesis, zeta potential, surface tension and UV-Vis have been successfully used to reveal the stability mechanism of SMA-MPEGA. The SMA3000-MPEGA1000 with a molar ratio of styrene to maleic anhydride of 3:1 and the molecular weight of side chain PEG of 1000 has the optimum carbon black dispersion. The results of the effect of dispersant structure on its dispersion performance reveal that the stable adsorption of dispersant on the surface of carbon black is the key to obtaining a space or electrostatic repulsion stabilizing role.

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Aqueous dispersing mechanism study of nonionic polymeric dispersant for organic pigments

Cited by 15 publications

References 52 publications

Improving the steric hindrance effect of linear sulfonated acetone–formaldehyde dispersant and its performance in coal–water slurry

Improving the steric hindrance effect of linear sulfonated acetone–formaldehyde dispersant and its performance in coal–water slurry

Strain-Sensing Composite Nanofiber Filament and Regulation Mechanism of Shoulder Peaks Based on Carbon Nanomaterial Dispersion

Synthesis ofSMA‐PEGhyperdispersant and its stabilization mechanism for carbon black

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