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Böschel, Dorit; Roggendorf, Hans

doi:10.1023/a:1020283206199

Cited by 18 publications

(4 citation statements)

References 3 publications

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“…By tilting a beaker filled with a sol the flowing behavior of the sol was observed. As soon as the sol loses fluidity the gelation point is said to be reached [15]. The measurement was repeated four times and the error will be in the order of minutes.…”

Section: Effect Of Tmes/teos Molar Ratio (M) On Gelation Timementioning

confidence: 99%

Superhydrophobic silica films by sol–gel co-precursor method

Latthe

Imai

Ganesan³

et al. 2009

Applied Surface Science

191

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Section: Effect Of Tmes/teos Molar Ratio (M) On Gelation Timementioning

confidence: 99%

Superhydrophobic silica films by sol–gel co-precursor method

Latthe

Imai

Ganesan³

et al. 2009

Applied Surface Science

191

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“…BO 2 À ions bind with hydroxyl groups of silicate and act as a crosslinker for the siloxane network. 12 The absence of boron in the EDX analysis of the silica film may be due to the fact that esterification of BO 2 À is reversible 13 and was removed by the washing process after the reaction. However, we guess that BO 2 À should play an important role in the silica regrowth process because the regrowth to upright sheets was not observed using only NaOH or other reducing agents.…”

mentioning

confidence: 99%

Silica-based gene reverse transfection: an upright nanosheet network for promoted DNA delivery to cells

Yamazaki

Hanagata

et al. 2012

Chem. Commun.

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“…By tilting a test tube filled with a sol, the flowing behaviour of the sol was observed. As soon as the sol loses fluidity the gelation point is reached [21]. The measurement was repeated three times and the error will be in the order of minutes.…”

Section: Gelation Time and Optical Transparencymentioning

confidence: 99%

TEOS based water repellent silica films obtained by a co-precursor sol–gel method

Latthe

Hirashima

Rao

2009

Smart Mater. Struct.

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The nature of interfaces between water and hydrophobic materials has been a subject of great interest. Experimental results from tetraethoxysilane (TEOS) based hydrophobic silica films synthesized by the two step sol–gel process using hexadecyltrimethoxysilane (HDTMS) as a co-precursor are described. The molar ratio of TEOS, methanol (MeOH), acidic water (0.001 M, oxalic acid), and basic water (8 M, NH4OH) was kept constant at 1:66.66:6.76:6.66, and the molar ratio of HDTMS/TEOS (M) was varied from 0 to 22.9 × 10−2. The maximum contact angle of 125° was obtained for M = 22.9 × 10−2. It is observed that the water contact angle value on the HDTMS modified films remained stable at 125°, after heat treatment up to 235 °C. However, the water contact angle value decreased to 52° in the case of unmodified films, indicating the improvement in the thermal stability using HDTMS as a co-precursor. The hydrophobic silica films retained their hydrophobicity up to a temperature of 235 °C and above this temperature the films became hydrophilic. The hydrophobic silica films were characterized by surface roughness studies, scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, contact angle measurements, and % optical transmission.

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Untitled

Cited by 18 publications

References 3 publications

Superhydrophobic silica films by sol–gel co-precursor method

Superhydrophobic silica films by sol–gel co-precursor method

Silica-based gene reverse transfection: an upright nanosheet network for promoted DNA delivery to cells

TEOS based water repellent silica films obtained by a co-precursor sol–gel method

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