Plasma Process. Polym. 2/2009

Tran, Dung Thi; Mori, Shinsuke; Tsuboi, Daisuke; Suzuki, Masaaki

doi:10.1002/ppap.200990002

Cited by 3 publications

(3 citation statements)

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“…During thin film deposition, the formation of a smooth, particulate free surface morphology is of significant importance in industries such as semiconductor processing, membrane filtration, thin film solar cells, and medical device coatings. [1][2][3][4][5] Silicone-like coatings have been used in these applications and can be deposited from monomer precursors such as hexamethyldisiloxane (HMDSO), tetraethoxysilane (TEOS), and polydimethylsiloxane (PDMS). [5,6] The organic/inorganic content of these films can be tailored depending on monomer type, gas chemistry and discharge energy.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Formation Mechanism of Aligned Nano-Structured Siloxane Coatings Deposited Using an Atmospheric Plasma Jet

Stallard

Iqbal

Turner

et al. 2013

Plasma Process. Polym.

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In this study surfaces exhibiting a nano-structured morphology have been creating in a single step deposition process using an atmospheric pressure plasma jet. Plasma polymerized coatings were deposited from a HMDSO monomer which was introduced into a He/N 2 plasma in the form of aerosolized droplets. By controlling the plasma discharge regime and monomer flow rate, the surface morphology was altered to create surfaces exhibiting an aligned fibrous morphology or a surface consisting of spherical agglomerates. Optical emission spectroscopy showed variation in photon emission energy depending on the He/N 2 ratio. Both thermal imaging and numerical simulations indicate that vaporization of the monomer occurs, which facilitates monomer polymerization in the gas phase and subsequent particulate nucleation. XPS analysis identified a higher amount of carbon bound siloxy species at regions where greater particulate formation was observed on the substrate. Cross-sectional SEM and He-ion imaging indicate that the formation of fibrous structures is associated with localized surface charging, which gives rise to selective agglomeration of semi-amorphous particulates which become aligned on the substrate. Modeling of droplet behavior in the plasma indicates that under conditions of higher monomer flow rate, saturation within the plasma occurs which facilitates nucleation of particulates, while experimental and modeling results indicate surface driven growth mechanisms are more likely to occur at lower precursor flow rates.

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Section: Introductionmentioning

confidence: 99%

Investigation of the Formation Mechanism of Aligned Nano-Structured Siloxane Coatings Deposited Using an Atmospheric Plasma Jet

Stallard

Iqbal

Turner

et al. 2013

Plasma Process. Polym.

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“…[76][77][78][79][80][81][82][83][84][85][86][87][88][89][90][91][92][93]. Such composite membranes have a hydrophilic surface are characterized by a high biocompatibility with blood and reduced adsorption of proteins from solutions.…”

Section: Treatment Of Polymer Membranes By Plasma Of Organic Gasesmentioning

confidence: 97%

Modification of polymer membrane properties by low-temperature plasma

2015

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The results of investigations into the use of low-temperature plasma for modification of polymer membranes are considered. The basic lines of research in this area are highlighted. It is shown that plasma treatment is quite an effective tool for both improving properties of existing polymer membranes and manufacturing new composite membranes with unique characteristics. Examples of successful use of plasmamodified membranes in various branches of industry and medicine are given.

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“…Surface modification is a very useful method for developing fouling resistance in polymeric membranes. Different techniques can be used for the surface modification of thin film polymeric membranes such as UV‐induced graft polymerization, plasma‐induced polymerization, plasma treatment, chemical functionalization, physical coating of the polymer, and nanoparticle treatment . Using these methods, hydrophilic or charged functional groups can be introduced onto polymeric membrane surfaces, changing the surface chemistry, and topology, thus potentially reducing the fouling factors and enhancing the membrane separation performance .…”

Section: Introductionmentioning

confidence: 99%

Surface photochemical graft polymerization of acrylic acid onto polyamide thin film composite membranes

Ngo

Tran

Dinh

2016

J of Applied Polymer Sci

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Surface modification is an effective approach to enhance the properties of polymeric membranes. In this work, the UV‐photo‐induced graft polymerization of acrylic acid (AA) onto the surfaces of polyamide thin film composite (TFC‐PA) membranes was carried out using an immersion method performed under ambient conditions. The experimental results indicate that the membrane surface becomes more hydrophilic because of the appearance of new carboxylic groups on the surface after the modification. This reduces the water contact angle and increases the water permeability compared with the unmodified membrane. The membrane surface is relatively compact and smooth due to the formation of the polymeric AA‐grafted layer. The separation performance of the modified membrane is improved with enhancements of the permeate flux and the retention of humic acid from aqueous feed solutions compared with those of the unmodified membrane. The fouling resistance of the membrane is also improved because of the higher maintained flux ratios and the lower irreversible fouling factors for the removal of various organic compounds from feed solutions. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44418.

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Plasma Process. Polym. 2/2009

Cited by 3 publications

References 0 publications

Investigation of the Formation Mechanism of Aligned Nano-Structured Siloxane Coatings Deposited Using an Atmospheric Plasma Jet

Investigation of the Formation Mechanism of Aligned Nano-Structured Siloxane Coatings Deposited Using an Atmospheric Plasma Jet

Modification of polymer membrane properties by low-temperature plasma

Surface photochemical graft polymerization of acrylic acid onto polyamide thin film composite membranes

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