Wettability and surface composition of partly and fully regenerated cellulose thin films from trimethylsilyl cellulose

Mohan, Tamilselvan; Kargl, Rupert; Doliška, Aleš; Vesel, Alenka; Köstler, Stefan; Ribitsch, Volker; Stana‐Kleinschek, Karin

doi:10.1016/j.jcis.2011.03.022

Cited by 102 publications

(86 citation statements)

References 40 publications

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“…After longer regeneration time (up to 270 s) no further reduction of the thickness is observed, which indicates a completed desilylation. 17 These results are also verified by XPS measurements, where the full regeneration was proven by missing Si-signals. Ellipsometry measurements show, besides the reduction in layer thickness, a strong increase of refractive index n from 1.46 of the TMSC to 1.52 (at 600 nm) of the regenerated cellulose films.…”

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confidence: 58%

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Cellulose as biodegradable high-k dielectric layer in organic complementary inverters

Petritz

Wolfberger

Fian

et al. 2013

Applied Physics Letters

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We report on the natural source based and biodegradable material cellulose on Al2O3 as ultrathin hybrid high-k dielectric layer for applications in green electronics. Dielectric films of 16 nm cellulose (ε ≈ 8.4) and 8 nm Al2O3 (ε ≈ 9) exhibit low leakage currents up to electric fields of 1.5 MV/cm. Pentacene and C60 based organic thin film transistors show a well-balanced performance with operation voltages around 2 V. They are implemented in complementary inverters with excellent switching behavior, a small-signal gain up to 60 and with exceptionally high and balanced noise margin values of 82% at ultralow operation voltage (VDD = 2.5 V).

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confidence: 58%

“…Pure TMSC can be regarded as a low energy surface material with c ¼ 24. 16,17 Moreover, the desilylation leads to a significant reduction of the film thickness. The pure TMSC films are 50 6 2 nm thick, whereby after 90 s desilylation a thickness of 16 6 2 nm is observed, corresponding to a reduction in thickness of about 70%.…”

mentioning

confidence: 99%

Cellulose as biodegradable high-k dielectric layer in organic complementary inverters

Petritz

Wolfberger

Fian

et al. 2013

Applied Physics Letters

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“…The dispersive component was the dominant component of the surface free energy. This is a typical feature characteristic for polymers of which the wood is composed (Mohan et al, 2011;Shen et al, 1998). According to Li et al (2014), the high value of the dispersive component is the result of high interaction ability of the dispersive part of available carbon-oxygen and carbon-carbon bonds within the wood.…”

Section: Materijali I Metodementioning

confidence: 99%

Surface Wettability of Wood Species from Tropical and Temperate Zones by Polar and Dispersive Liquids

Laskowska

Kozakiewicz

2017

Drvna ind.

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“…(functionalised silica) is the asymmetric CH 3 stretch. [15] The shift in wavenumber reflects differences in chemical environment and allows the TMS groups on silica and cellulose to be identified independently. The TMS on groups on silica do not appear to be lost during the acid rinse: their contribution to the overall spectrum remains constant.…”

Section: Removal Of -Si(ch 3 ) 3 From Cellulosementioning

confidence: 99%

“…These drawbacks are overcome with thin, flat cellulose substrates. Such surfaces have allowed the use of a wide range of different experimental methods, including X-ray photoelectron spectroscopy, [14,15] surface force apparatus, [16] atomic force microscopy, [17] quartz crystal microbalance, [18] ellipsometry [9] and neutron reflectometry [10,11] as well as the TIR Raman spectroscopy we use here. They are also amenable to quantitative studies of adsorption kinetics under welldefined mass transport conditions.…”

Section: Introductionmentioning

confidence: 99%

Surfactant adsorption by total internal reflection Raman spectroscopy. Part III: Adsorption onto cellulose

Woods

Petkov

Bain

2011

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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The full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. Abstract TIR Raman spectroscopy has been used to study the adsorption of surfactants onto cellulose. The cellulose was prepared by Langmuir-Blodgett deposition of trimethylsilylcellulose onto silica followed by removal of the trimethylsilyl groups with acid to generate a hydrophilic surface. The reaction was followed in situ with Raman spectroscopy, revealing a two-step hydrolysis. Adsorption isotherms of hexadecyltrimethylammonium bromide (CTAB) and Triton X-100(TX-100) on hydrophilic cellulose were obtained by TIR Raman scattering under quasi-equilibrium conditions where the bulk concentration was slowly but continuously varied. The isotherms of both surfactants are almost linear, in contrast to the isotherms on hydrophilic silica. The CTAB isotherm shows hysteresis depending on whether the concentration of the surfactant is increasing or decreasing due to a slow adsorption region. A mixture of TX-100 and CTAB shows ideal adsorption, in contrast to adsorption of the same mixture on silica where there is a strong cooperative interaction at low CTAB surface coverage.

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Wettability and surface composition of partly and fully regenerated cellulose thin films from trimethylsilyl cellulose

Cited by 102 publications

References 40 publications

Cellulose as biodegradable high-k dielectric layer in organic complementary inverters

Cellulose as biodegradable high-k dielectric layer in organic complementary inverters

Surface Wettability of Wood Species from Tropical and Temperate Zones by Polar and Dispersive Liquids

Surfactant adsorption by total internal reflection Raman spectroscopy. Part III: Adsorption onto cellulose

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