Preparation of the hydrophilic/hydrophobic silica particles

Jesionowski, Teofil; Krysztafkiewicz, Andrzej

doi:10.1016/s0927-7757(02)00137-1

Cited by 95 publications

(50 citation statements)

References 23 publications

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“…Similar modified silicas were described in details elsewhere [35,55,56]. The amounts of grafted TMS groups for chosen series of modified silicas (Table 1, C TMS ) correspond to 30-50% of initial content of surface SiOH groups; i.e., significant amounts of silanols remain.…”

Section: Resultsmentioning

confidence: 98%

Structured water in partially dehydrated yeast cells and at partially hydrophobized fumed silica surface

Туров

Gun'ko

Богатырев

et al. 2005

Journal of Colloid and Interface Science

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Section: Resultsmentioning

confidence: 98%

Structured water in partially dehydrated yeast cells and at partially hydrophobized fumed silica surface

Туров

Gun'ko

Богатырев

et al. 2005

Journal of Colloid and Interface Science

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“…Values of -10 mV to -20 mV are not uncommon. 55 A large enough energy barrier in the particle-bubble interaction potential, sufficient to dominate the attachment of the particles to the interfaces, is thus not predicted in such cases. This is particularly true in the presence of a moderate to high amount of background electrolyte in the system.…”

Section: 1mentioning

confidence: 99%

Effect of particle adsorption rates on the disproportionation process in pickering stabilised bubbles

Ettelaie

Murray

2014

The Journal of Chemical Physics

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The degree of shrinkage of particle stabilised bubbles of various sizes, in a polydisperse bubble dispersion, has been investigated in the light of the finite adsorption times for the particles and the disproportionation kinetics of the bubbles. For the case where the system contains an abundance of particles we find a threshold radius, above which bubbles are stabilised without any significant reduction in their size. Bubbles with an initial radius below this threshold on the other hand, undergo a large degree of shrinkage prior to stabilisation.As the ratio of the available particles to the bubbles is reduced, it is shown that the final bubble size, for the larger bubbles in the distribution, becomes increasingly governed by the number of particles, rather than their adsorption time per se. For systems with "adsorption controlled" shrinkage ratio, the final bubble distribution is found to be wider than the initial one, while for a "particle number controlled" case it is actually narrower. Starting from an unimodal bubble size distribution, we predict that at intermediate times, prior to the full stabilisation of all bubbles, the distribution breaks up into a bimodal one. However, the effect is transient and an unimodal final bubble size distribution is recovered once again, when all the bubbles are stabilised by the particles.-3-1

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“…4 might be explained by the polydispersity of the sample and indirectly confirms the presence of aggregates formed in the presence of the aminopropyl chain, which increases the particles' hydrophobicity thus inducing flocculation (see Fig. SI-2, supporting information) [53][54][55][56].…”

Section: Influence Of the Silica/spions Ratios On Morphologymentioning

confidence: 78%

Preparation and characterization of functional silica hybrid magnetic nanoparticles

Digigow

Dechézelles

Dietsch

et al. 2014

Journal of Magnetism and Magnetic Materials

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We report on the synthesis and characterization of functional silica hybrid magnetic nanoparticles (SHMNPs). The co-condensation of 3-aminopropyltriethoxysilane (APTES) and tetraethyl orthosilicate (TEOS) in presence of superparamagnetic iron oxide nanoparticles (SPIONs) leads to hybrid magnetic silica particles that are surface-functionalized with primary amino groups. In this work, a comprehensive synthetic study is carried out and completed by a detailed characterization of hybrid particles' size and morphology, surface properties, and magnetic responses using different techniques. Depending on the mass ratio of SPIONs and the two silanes (TEOS and APTES), we were able to adjust the number of surface amino groups and tune the magnetic properties of the superparamagnetic hybrid particles.

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Preparation of the hydrophilic/hydrophobic silica particles

Cited by 95 publications

References 23 publications

Structured water in partially dehydrated yeast cells and at partially hydrophobized fumed silica surface

Structured water in partially dehydrated yeast cells and at partially hydrophobized fumed silica surface

Effect of particle adsorption rates on the disproportionation process in pickering stabilised bubbles

Preparation and characterization of functional silica hybrid magnetic nanoparticles

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