Improved wettability of chemithermomechanical pulp by oxygen plasma treatment

Carlsson, C. M. Gilbert; Eriksson, I.; Lindström, Erica; Ström, Gunnar

doi:10.3183/npprj-1994-09-02-p072-075

Cited by 15 publications

(7 citation statements)

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“…There are several methods used to reduce the hydrophilic property of cellulose fibre in order to improve the interfacial adhesion property and subsequently reduce the water uptake in biocomposites. By corona and plasma treatments [7,8], physical fibre modifications are made, resulting in enhancement of surface roughness followed by alkaline treatment for improvement mechanical bonding.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Surface Modifications on the Mechanical and Thermal Properties of Empty Fruit Bunch Oil Palm Fibre PP Biocomposites

Kittikorn

Strömberg

et al. 2012

Polymers from Renewable Resources

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The aim of this work was to study the effect of chemical surface modifications on empty fruit bunch oil palm fibre/polypropylene composite properties. By FTIR spectra, propionylated fibre and PPgMA-modified fibre showed the presence of a carbonyl group of esters while vinyltrimethoxysilane-treated fibre showed a peak of silicate, confirming that the modifications were successful. PPgMAmodified fibre PP composite at fibre content 20% demonstrated the highest modulus of 0.71 GPa while the modulus of unmodified fibre PP composite was 0.56 GPa. By DSC analysis, PPgMA-modified fibre and vinyltrimethoxysilane-treated fibre PP composite at the same fibre content of 5% showed the highest crystallinity of 46% and 44% respectively whereas unmodified fibre PP composite showed a lower crystallinity of 38%. The DMTA analysis showed that after 60°C, the modified fibre PP composites exhibited a higher stiffness than pure polypropylene.

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Section: Introductionmentioning

confidence: 99%

The Effect of Surface Modifications on the Mechanical and Thermal Properties of Empty Fruit Bunch Oil Palm Fibre PP Biocomposites

Kittikorn

Strömberg

et al. 2012

Polymers from Renewable Resources

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“…Comparative evaluation of the effects of oxygen air, nitrogen and argon cold plasma treatments of chemithermomechanical pulp (CTMP) showed that, whereas oxygen and air plasmas increase substantially the wettability (in some cases more than 100%), nitrogen and argon discharges reduce wettability. 94,95 It was demonstrated that the oxygen plasma treatment increases the oxygen content of fi bre surfaces. The wettability increase was related to the oxidation and removal of hydrophobic materials (e.g.…”

Section: Plasma Surface Modifi Cation Of Wood Pulp Fi Bresmentioning

confidence: 98%

Plasma modification of natural cellulosic fibres

Johansson

2007

Plasma Technologies for Textiles

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“…It has been demonstrated that argon can be used as the plasma gas for the controlled modification of paper surface characteristics [12][13][14]. It has been shown that both argon and oxygen plasma treatments of polypropylene (PP) improve its adhesion to cellulose dramatically [15,16]. But up to now, there has been no study on plasma exposure of specified paper surface (e.g., TFE pre-deposited) and its response to surface modifications.…”

Section: Introductionmentioning

confidence: 98%

Application of RF Argon Plasma to Enhance Hydrophobic Properties of Fluoropolymer Pre-deposited Paper

Şahin

2011

Journal of Adhesion Science and Technology

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Tetrafluoroethane (TFE) pre-deposited paper substrates were exposed to an inert gas (argon) plasma environment in order to convert the hydrophilic to hydrophobic surfaces via grafting and/or cross-linking of the fluorinated layer on the surface of paper, while also improving coating uniformity. The XPS spectrum indicates changes in the nature and relative ratios of the surface functionalities. The application of 300 W RF-power argon plasma (at 10 min and 300 mTorr) created a very highly hydrophobic character (water contact angle, θ = 120 • ). A typical high resolution (HR) C 1s XPS spectrum of argon-plasma treated TFE pre-deposited paper contains four distinct peaks at 285 (C-C), 285.7 (C-CF), 286.7 (C-O and C-CF 2 ) and 291 eV (CF 2 -C) binding energies. The C 1s region indicates narrowing of the spectrum and complete removal of the CF 3 -CF (292.5 eV) peak. This change in the shape of HR C 1s spectrum also indicates loss of fluorine from the TFE pre-deposited paper with argon exposure compared to only TFE pre-deposited paper.The high-energy argon ions appear to etch the uppermost region, leading to micro-roughening of the paper surface. AFM micrographs reveal re-arrangement of the paper surface with argon plasma exposure.The water absorption of paper coated with TFE alone only decreased by 1.3%. However, after argonplasma treatment of the TFE pre-deposited paper, the water absorption was reduced aproximately by 22% compared to virgin paper.

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Improved wettability of chemithermomechanical pulp by oxygen plasma treatment

Cited by 15 publications

References 0 publications

The Effect of Surface Modifications on the Mechanical and Thermal Properties of Empty Fruit Bunch Oil Palm Fibre PP Biocomposites

The Effect of Surface Modifications on the Mechanical and Thermal Properties of Empty Fruit Bunch Oil Palm Fibre PP Biocomposites

Plasma modification of natural cellulosic fibres

Application of RF Argon Plasma to Enhance Hydrophobic Properties of Fluoropolymer Pre-deposited Paper

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