Control on wetting properties of spin-deposited silica films by surface silylation method

Rao, A. Venkateswara; Latthe, Sanjay S.; Dhere, Sunetra L.; Pawar, S.S.; Imai, Hiroaki; Ganesan, V.; Gupta, Satish C.; Wagh, P. B.

doi:10.1016/j.apsusc.2009.09.057

Cited by 36 publications

(26 citation statements)

References 28 publications

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“…Later on, researchers further studied by finely controlling the micro/nanostructure or chemical composition of a surface, the contact angle of water on this surface can be manipulated between hydrophilic and hydrophobic [25][26][27][28] .…”

Section: Atomic Morphological Studiesmentioning

confidence: 99%

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Capillary Dynamics of Water/Ethanol Mixtures

Amador

Jia

Ding

2015

Ind. Eng. Chem. Res.

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Surface tension and contact angle play important roles in capillary dynamics during washing commission of spray-dried detergent powder where interaction between surface chemistry and liquid is concerned. An experimental study for the dynamics of water/ethanol mixtures in both hydrophilic and hydrophobic capillary tubes has been investigated. The combination of water/ethanol mixtures and Trimethylchlorosilane coating on capillaries provides a variety of liquid surface tension and contact angle for the penetrating system. Significant differences of penetrating speed on hydrophilic and hydrophobic tubes indicate that dynamic contact angle dominates hydrophobic surface while liquid surface tension plays a more important role on hydrophilic surface. The speed gradient of different liquids on hydrophilic surface is greater than hydrophobic surface, mainly due to the domination between hydrogen bonding 2 structures and water polarity while liquid moves on surfaces covered with different chemistry, physically absorbed water on silica capillaries or silanol groups covered capillaries.

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Section: Atomic Morphological Studiesmentioning

confidence: 99%

“…Silylation is a popular process to change a hydrophilic surface into hydrophobic property 25 . In this study, we coated TMCS on capillary tubes to change the surface chemistry.…”

Section: Atomic Morphological Studiesmentioning

confidence: 99%

Capillary Dynamics of Water/Ethanol Mixtures

Amador

Jia

Ding

2015

Ind. Eng. Chem. Res.

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“…The intensity of the Si-C stretch vibration at approximately 801 cm -1 appeared via the chlorosilane/wood hydroxy reaction. This indicates that the reaction contributed to the silicon oxygen bond, improving the dimensional stability (Rao et al 2010).…”

Section: Surface Hydrophobicitymentioning

confidence: 99%

“…The mechanisms of hydrophobic modification of DMDCS and PDMS are different. The DMDCS-modified silica films are adherent, thermally stable, and durable against humidity (Rao et al 2010). The DMDCS reacted with hydroxyl groups and replaced the Si−OH with a new Si−O−Si structure with alkyl side groups.…”

Section: Surface Hydrophobicitymentioning

confidence: 99%

“…The intensity of the band at 1260 cm -1 (Si-CH3 non-plane angle change vibration) also increased with DMDCS treatment due to the reaction with wood. The DMDCS P DMS peak at 1024 cm -1 is associated with the transverse optical vibration mode, corresponding to the asymmetric stretching of the intertetrahedral oxygen atoms in the Si-O-Si linkage (Rao et al 2010). The intensity of the Si-C stretch vibration at approximately 801 cm -1 appeared via the chlorosilane/wood hydroxy reaction.…”

Section: Surface Hydrophobicitymentioning

confidence: 99%

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Effect of Hydrophobic Modification on Mechanical Properties of Chinese Fir Wood

et al. 2018

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The water repellency, elastic modulus, and hardness of hydrophobictreated and untreated wood cell walls were investigated. Chinese fir (CF; Cunninghamia lanceolata (Lamb.) Hook) wood was modified using polydimethylsiloxane (PDMS) and dimethyldichlorosilane (DMDCS) dissolved in n-hexane at 2%, 5%, and 8% (w/w) for 5 min, 30 min, and 2 h, respectively. A hydrophobic property was observed in the modified wood. The water contact angle value of the untreated wood surface was 85°, but after treatment this value increased to 147° and 143° for the PDMS-and DMDCS-treated wood, respectively. Increases in the elastic modulus and hardness of the wood cell wall were observed after PDMS treatment. These treatments also improved the water repellency of the wood surface, as verified by the reduction of the hydroxyl group O-H stretching vibrations at 3328 cm -1 . Compared to DMDCS, the PDMS treatment improved the hydrophobicity of wood surfaces and increased the nanomechanical properties of the wood cell wall. When an 8% concentration of PDMS and a 2 h treatment time were used, the treated wood showed the best mechanical properties.

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A simple method for preparation of transparent hydrophobic silica-based coatings on different substrates

Wang

Xie

et al. 2011

Appl. Phys. A

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Control on wetting properties of spin-deposited silica films by surface silylation method

Cited by 36 publications

References 28 publications

Capillary Dynamics of Water/Ethanol Mixtures

Capillary Dynamics of Water/Ethanol Mixtures

Effect of Hydrophobic Modification on Mechanical Properties of Chinese Fir Wood

A simple method for preparation of transparent hydrophobic silica-based coatings on different substrates

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