Uniform silica particle precipitation: An aggregative growth model

Bogush, G. H.; Zukoski, Charles F.

doi:10.1016/0021-9797(91)90030-c

Cited by 442 publications

(471 citation statements)

References 38 publications

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“…Furthermore, they did not yield ceramic bodies with a monomodal pore-size distribution, even when crystallization occurred during consolidation. 2,30 Despite these limitations, monodisperse colloidal systems (e.g., those based on silica spheres) 11 have served as excellent model systems for the study of aggregation, [31][32][33][34][35] rheological, 36 -40 sedimentation, 40 -42 and drying phenomena 3,43 Lange and co-workers 44,45 proposed a new paradigm for powder processing in the early 1990s. Their approach embodied many principles that guided earlier efforts, including use of powders with controlled size, morphology, and purity; no added binder; and dispersion control.…”

Section: Historical Perspectivementioning

confidence: 99%

Colloidal Processing of Ceramics

Lewis

2000

Journal of the American Ceramic Society

1,192

640

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Colloidal processing of ceramics is reviewed with an emphasis on interparticle forces, suspension rheology, consolidation techniques, and drying behavior. Particular attention is given to the scientific concepts that underpin the fabrication of particulate-derived ceramic components. The complex interplay between suspension stability and its structural evolution during colloidal processing is highlighted.

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Section: Historical Perspectivementioning

confidence: 99%

Colloidal Processing of Ceramics

Lewis

2000

Journal of the American Ceramic Society

1,192

640

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“…The monomer addition model argues that after a limited period of time for nucleation, growth occurs through the addition of hydrolyzed monomers to the oligomers surface and gradually becomes the dominant process [30,33,34]. On the contrary, the controlled aggregation model claims that the aggregation of sub-particles leads to particle formation [31,32,37,40,41]. Recent results reported seems to support the monomer addition model [42].…”

Section: Resultsmentioning

confidence: 96%

“…The mechanism of Stöber method with respects to silica particle formation, growth, and particle size, distribution, and shape have been investigated in the past decades [30][31][32][33][34][35][36][37][38][39][40][41][42]. However, the mechanisms reported by different researchers are contradictory.…”

Section: Resultsmentioning

confidence: 99%

Nano SiO2 particle formation and deposition on polypropylene separators for lithium-ion batteries

Fu¹,

Luan²,

Argue³

et al. 2012

Journal of Power Sources

199

125

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This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues.Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited. b s t r a c tThe novelty of this work is the formation and deposition of SiO 2 , as opposed to deposition using commercially available SiO 2 powder suspension in the solution, to form ceramic coating on polypropylene (PP) separators for lithium-ion battery. The formation of SiO 2 nanoparticles with uniform particle size is accomplished through direct hydrolysis of tetraethyl orthosilicate (TEOS), while the deposition of the formed SiO 2 on PP separators was conducted in the same solution containing polyvinylidene fluoridehexafluoropropylene (PVDF-HFP) as binders and acetone as the solvent. The effects of the ceramic coating on the surface morphology, tensile strength, contact angles, electrolyte uptake, thermal shrinkage of the PP separators and the cell performances such as battery rate capability and Coulombic efficiency were investigated. The coated separators show significant reduction in thermal shrinkage and improvement in tensile strength, contact angles, electrolyte uptake and battery performance as compared to the plain PP separator. Crown

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“…La esfericidad y monodispersidad de las partículas, para ambos sistemas, podrían atribuirse a las condiciones de reacción en catálisis básica utilizadas, ya que en sistemas donde se ha utilizado catálisis básica con TEOS [27,[42][43][44][45][46][54][55], con mezclas de TEOS con algún organoalcoxisilano [47][48][49][50]52], con alcóxidos de titanio [51,[56][57], o con mezclas de organoalcoxisilanos [58] siempre se ha observado la formación de esferas con dichas características. El uso de catálisis ácida o ausencia de catalizador puede generar esferas de mayor tamaño o polidispersas, [48].…”

Section: Iii212 Sistema Tio 2 Funcionalizado Con Grupos Vinilounclassified

Synthesis and characterisation of organic-inorganic hybrid polymers: Polystyrene-SiO2 & Polystyrene-TiO2

Carrillo¹

2018

Preprint

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This work focuses on the synthesis and characterisation of a new class of materials so-called organic-inorganic hybrid polymers, whose main characteristics are the synergy and bonding between an organic phase with an inorganic phase. This thesis is a research effort towards getting new and better materials for diverse and specialised applications.The synthesis of materials was carried out in two stages: in the first one hybrid particles of SiO2 and TiO2 were obtained via sol-gel process, both of them functionalised with vinyl groups, and nominal diameters of 200 nm and 220 nm, respectively. In the second stage hybrid polymers of the type polystryrene-SiO2 (PS-SiO2) and polystyrene-TiO2 (PS-TiO2) were obtained via free radical polymerisation, and employing different concentrations of the functionalised hybrid particles obtained in the first stage. These materials formed translucent and semiflexible films.The presence of the inorganic phase inside the organic phase for both systems, PS-SiO2 and PS-TiO2, promoted a decrease on the Tg inversely proportional to the concentration increase of PS-SiO2 and PS-TiO2, respectively, which suggests that the particles confer a plasticiser effect over the polymer matrix.For both systems, PS-SiO2 and PS-TiO2, apart from the Tg decrease, there were differences on the elastic modulus measured. These results suggest that these differences might be due to the difference in particle size and chemical species. Likewise, the thermal stability of both PS-SiO2 and PS-TiO2 increased significantly and in the same order, relative to pristine polystyrene.

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Uniform silica particle precipitation: An aggregative growth model

Cited by 442 publications

References 38 publications

Colloidal Processing of Ceramics

Colloidal Processing of Ceramics

Nano SiO2 particle formation and deposition on polypropylene separators for lithium-ion batteries

Synthesis and characterisation of organic-inorganic hybrid polymers: Polystyrene-SiO2 & Polystyrene-TiO2

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Uniform silica particle precipitation: An aggregative growth model

Cited by 442 publications

References 38 publications

Colloidal Processing of Ceramics

Colloidal Processing of Ceramics

Nano SiO2 particle formation and deposition on polypropylene separators for lithium-ion batteries

Synthesis and characterisation of organic-inorganic hybrid polymers: Polystyrene-SiO2 &amp; Polystyrene-TiO2

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Product

Resources

About

Synthesis and characterisation of organic-inorganic hybrid polymers: Polystyrene-SiO2 & Polystyrene-TiO2