Silanization of superficially porous silica particles with p-aminophenyltrimethoxysilane

Borges-Muñoz, Amaris C.; Miller, Daniel P.; Zurek, Eva; Colón, Luis A.

doi:10.1016/j.microc.2019.02.013

Cited by 9 publications

(4 citation statements)

References 37 publications

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“…As can be seen across the literature, numerous silanes/ siloxanes and solvents are used for silanization, and it appears that there is no standardized method to follow if one desires a specific contact angle. Additionally, even though surface modification via silanization is widely applied, Borges-Munõz et al 23 concluded recently that it is rarely discussed how the reaction parameters affect the degree of surface coverage, and the surface coverage directly controls the contact angle measurements. 16 After performing the literature survey, a similar conclusion was established, particularly for glass surfaces, whereas silica surfaces were more covered in the literature.…”

Section: ■ Introductionmentioning

confidence: 99%

Systematic Study of Wettability Alteration of Glass Surfaces by Dichlorooctamethyltetrasiloxane Silanization─A Guide for Contact Angle Modification

Vukovic,

Røstad,

Farooq

et al. 2023

ACS Omega

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To investigate the effects of wettability on multiphase flow in porous media, glass bead packs or micromodels are commonly used. Their wettability can be altered by the surface treatment method−silanization. Although silanization is widely used for glass wettability modification, comparable systematic approaches over a large range of geometries, treatment conditions, and measurement systems are scarce. In this work, dichlorooctamethyltetrasiloxane (Surfasil) treatment was systematically investigated, resulting in a guide for achieving a wide range of contact angles. Initially, the influence of the Surfasil solvent, treatment time, and Surfasil-to-solvent ratio was investigated on glass plates using the sessile drop method. By varying these variables, it was possible to achieve a wide range of comparable, repeatable, and stable contact angles, from approximately 20−95°for air−water systems. Due to the linear increase of contact angle with larger Surfasil exposure, either due to the time or concentration, contact angle tuning is possible until the critical point. Beyond the critical point of exposure, a system-specific plateau value is reached, independent of the approach. After establishing a clear relationship between the parameters and contact angles, the same treatment parameters were applied to single beads, micromodels, and beadpacks with heptane as the chosen solvent. Optical image analysis was used for the microchips, and micro CT data analysis was used for the bead packs. The treatment appeared to be transferable to all geometries, resulting in similar wetting conditions within the limitations of the measurements. It is concluded that a glass plate can be used as an analogue for obtaining the contact angle alteration trends for more complex porous media with similar compositions. Data analysis methods and surface roughness could have an effect on the obtained contact angle spread.

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Section: ■ Introductionmentioning

confidence: 99%

Systematic Study of Wettability Alteration of Glass Surfaces by Dichlorooctamethyltetrasiloxane Silanization─A Guide for Contact Angle Modification

Vukovic,

Røstad,

Farooq

et al. 2023

ACS Omega

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“…Therefore, silane coupling agent is usually used to modify silica to enhance its bonding with rubber. [11][12][13][14] Lin et al [15] modified silica using silane coupling agents (TESPT, OTPTES, and OTES) and investigated the degree of silanization and the properties of the rubber composites. The results demonstrated that the degree of silanization of OTPTES reached 84%, and the composites had the best comprehensive properties.…”

Section: Introductionmentioning

confidence: 99%

An animal glycerol potassium salt without volatile organic compounds emission combined with plasma‐atomization technology and its application in green tires

Xiao

Gong

et al. 2023

Polymer Composites

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In this study, a VOC‐free animal glycerol potassium salt is introduced to replace the silane coupling agent, and the plasma is used to treat the modifier and silica. The impact of high‐energy electrons in the plasma increases the contact area between the modifier and silica. Combined with the atomization technology, the velocity difference realizes the microscopic dispersion of silica, the instantaneous thin‐layer drying reduces the oxidation of the rubber chains. XPS and SEM show that the plasma promotes the silanization reaction of silica. FTIR demonstrates that the existence of chemical bonds and hydrogen bonds between potassium oleate (PO) and silica, and there is a crosslinking between PO and sulfur. The PO/Si69‐silica/NR composites prepared by plasma‐atomization technology have better processing fluidity, mechanical properties and lower rolling resistance. The plasma‐atomization technology promotes the silanization reaction of silica, saves energy consumption and reduces dust pollution, meanwhile, the replacement of Si69 by PO reduces VOC emissions and the rolling resistance of the rubber, which provides an innovative idea for the development of green tires.

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“…6 They have found applications in electronics, 7 high-performance coatings and sealants, 8,9 thermal interface and optical materials, 10,11 and the preparation of liquid crystal systems, 12 including liquids with luminescent and semiconducting properties. 13,14 They have also found application in the modification of various surfaces, 15,16 endowing them with a variety of properties, such as increased hydrophobic nature 17 and protective coatings. 18 Some siloxanes are promising compounds for biomedical applications and demonstrate enhanced potency and improved pharmacological characteristics in comparison to their carbon analogues.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of mono- and polyfunctional organosilicon derivatives of polyhedral carboranes for the preparation of hybrid polymer materials

et al. 2022

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Silanization of superficially porous silica particles with p-aminophenyltrimethoxysilane

Cited by 9 publications

References 37 publications

Systematic Study of Wettability Alteration of Glass Surfaces by Dichlorooctamethyltetrasiloxane Silanization─A Guide for Contact Angle Modification

Systematic Study of Wettability Alteration of Glass Surfaces by Dichlorooctamethyltetrasiloxane Silanization─A Guide for Contact Angle Modification

An animal glycerol potassium salt without volatile organic compounds emission combined with plasma‐atomization technology and its application in green tires

Synthesis of mono- and polyfunctional organosilicon derivatives of polyhedral carboranes for the preparation of hybrid polymer materials

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