Infrared spectra and structure of thin polydimethylsiloxane films

Romanenko, E. A.; Tkachuk, B. V.

doi:10.1007/bf00604710

Cited by 10 publications

(4 citation statements)

References 4 publications

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“…Especially for the band at 1382 cm −1 , its intensity increased greatly with prolonged equilibration duration. This group was reported to be related to (1) ionogenic sulphonamide groups [36]; (2) bending vibration of methyl group [37]. In this paper we did not intend to exactly identify which speculation was correct, but tried to disclose a fact that the strong acidic solution indeed dissolved a portion of the GC adsorbent and thus resulted in the change of IR features of specific functional groups that were absent in the original form.…”

Section: Difference Between Adsorbentsmentioning

confidence: 65%

Cd(II) adsorption on various adsorbents obtained from charred biomaterials

Tanaka

Imaizumi

et al. 2010

Journal of Hazardous Materials

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Section: Difference Between Adsorbentsmentioning

confidence: 65%

Cd(II) adsorption on various adsorbents obtained from charred biomaterials

Tanaka

Imaizumi

et al. 2010

Journal of Hazardous Materials

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“…No changes in –OH (3300 cm −1 ) bands neither –CH bands (2900–3000 cm −1 ) were observed. Also, Si–O–Si bands (900–1100 cm −1 ) remained unaltered by BD permeation, indicating that the membranes were not chemically modified under these harsh conditions (pH app = 12, T = 60 °C) , .…”

Section: Resultsmentioning

confidence: 96%

Biodiesel Purification Using Polymeric Nanofiltration Composite Membranes Highly Resistant to Harsh Conditions

et al. 2017

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Biodiesel as alternative for conventional diesel fuel is mainly produced by the catalytic reaction of triglycerides with an alcohol. In this work, the purification of biodiesel was carried out with two lab-made solvent-resistant composite nanofiltration membranes of poly(vinylidene difluoride) (PVDF) as support and poly (dimethylsiloxane) as coating layer. Biodiesel was obtained from the esterification of partially refined soy oil with bioethanol (EtOH) and NaOH as catalyst. The best biodiesel purification performance was achieved with the PVDF-12SI membrane reaching high retention of glycerol, total glycerides, and soap. PVDF-SI membranes were found to have an excellent stability for biodiesel permeation, achieving a flux recovery ratio of EtOH as high as 0.94 after twenty cycles of use.

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“…The spectrum of PDMS-treated aluminum powder exhibits an absorbance peak at approximately 1260 cm -1 that is associated with the -CH 3 deformation or umbrella mode. In addition, the broad absorbance centered around 1100 cm -1 corresponds to the Si-O-Si stretching mode, and suggests that the deposition process and associated heating did not decompose the Si-O-Si backbone within the PDMS structure (Romanenko & Tkachuk, 1973).…”

Section: Figmentioning

confidence: 99%

The effect of gas phase polydimethylsiloxane surface treatment of metallic aluminum particles: Surface characterization and flow behavior

Ludwig

Gray

2017

Particuology

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Aluminum particles were exposed to gaseous polydimethylsiloxane (PDMS) to produce a hydrophobic surface coating for enhanced flow and fluidity. Surface retention of the intact PDMS was confirmed through infrared and X-ray photoelectron spectroscopy. Transmission electron microscopy was used to image cross-sections of the treated particles and energy dispersive spectroscopy element maps demonstrated the presence of a surface layer consisting of silicon and oxygen. Density measurements provided evidence for improvements in the Hausner ratio and Carr index of the PDMS-treated aluminum, indicating a reduction in inter-particulate cohesion through increased bulk density. Stability, compressibility, shear, aeration, and permeability of the particles were assessed by powder rheometer. The compressibility was reduced by approximately 32% following surface treatment, revealing a reduction in void space, while Mohr's circle analysis and shear testing determined that the extrapolated cohesion value was reduced by approximately 53% and the flow factor at 6 kPa was doubled. Aeration testing showed that the air velocity required to obtain a fluidized bed was on the order of 0.35 mm/s for the treated powder, whereas the raw powder could not be uniformly fluidized. PDMS may be a viable option for the large-scale treatment of aluminum powder for flow applications.

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Infrared spectra and structure of thin polydimethylsiloxane films

Cited by 10 publications

References 4 publications

Cd(II) adsorption on various adsorbents obtained from charred biomaterials

Cd(II) adsorption on various adsorbents obtained from charred biomaterials

Biodiesel Purification Using Polymeric Nanofiltration Composite Membranes Highly Resistant to Harsh Conditions

The effect of gas phase polydimethylsiloxane surface treatment of metallic aluminum particles: Surface characterization and flow behavior

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