Roll-to-Roll Coating by Liquid Flame Spray Nanoparticle Deposition

2015 ◽  
Vol 1747 ◽  
Author(s):  
Jyrki M. Mäkelä ◽  
Janne Haapanen ◽  
Mikko Aromaa ◽  
Hannu Teisala ◽  
Mikko Tuominen ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Functional Properties ◽  
Flame Spray ◽  
Solution Synthesis ◽  
Large Area ◽  
Silicon Dioxide Nanoparticles ◽  
Nanoparticle Deposition ◽  
Roll To Roll ◽  
High Production Rate ◽  
Liquid Flame Spray

ABSTRACTNanostructured coatings have been prepared on a flexible, moving paperboard using deposition of ca. 10-50-nm-sized titanium dioxide and silicon dioxide nanoparticles generated by a liquid flame spray process, directly above the paperboard, to achieve improved functional properties for the material. With moderately high production rate (∼ g/min), the method is applicable for thin aerosol coating of large area surfaces. LFS-made nanocoating can be synthesized e.g. on paper, board or polymer film in roll-to-roll process. The degree of particle agglomeration is governed by both physicochemical properties of the particle material and residence time in aerosol phase prior to deposition. By adjusting the speed of the substrate, even heat sensitive materials can be coated. In this study, nanoparticles were deposited directly on a moving paperboard with line speeds 50-300 m/min. Functional properties of the nanocoating can be varied by changing nanoparticle material; e.g. TiO2and SiO2are used for changing the surface wetting properties. If the liquid precursors are dissolved in one solution, synthesis of multi component nanoparticle coatings is possible in a one phase process. Here, we present analysis of the properties of LFS-fabricated nanocoatings on paperboard. The thermophoretic flux of nanoparticles is estimated to be very high from the hot flame onto the cold substrate. A highly hydrophobic coating was obtained by a mass loading in the order of 50–100 mg/m2of titanium dioxide on the paperboard.

scholarly journals Nanoparticle Deposition from Liquid Flame Spray onto Moving Roll-to-Roll Paperboard Material

2011 ◽  
Vol 45 (7) ◽  
pp. 827-837 ◽  
Author(s):  
Jyrki M. Mäkelä ◽  
Mikko Aromaa ◽  
Hannu Teisala ◽  
Mikko Tuominen ◽  
Milena Stepien ◽  
...  
Keyword(s):  
Flame Spray ◽  
Nanoparticle Deposition ◽  
Roll To Roll ◽  
Liquid Flame Spray

Adjustable wetting of Liquid Flame Spray (LFS) TiO2-nanoparticle coated board: Batch-type versus roll-to-roll stimulation methods

2014 ◽  
Vol 29 (2) ◽  
pp. 271-279 ◽  
Author(s):  
Mikko Tuominen ◽  
Hannu Teisala ◽  
Janne Haapanen ◽  
Mikko Aromaa ◽  
Jyrki M. Mäkelä ◽  
...  
Keyword(s):  
Argon Plasma ◽  
Ultra Violet ◽  
High Volume ◽  
Point Of View ◽  
Flame Spray ◽  
Ambient Conditions ◽  
Batch Type ◽  
Roll To Roll ◽  
Long Time ◽  
Liquid Flame Spray

Abstract Superhydrophobic nanoparticle coating was created on the surface of board using liquid flame spray (LFS). The LFS coating was carried out continuously in ambient conditions without any additional hydrophobization steps. The contact angle of water (CAW) of ZrO2, Al2O3 and TiO2 coating was adjusted reversibly from >150° down to ~10−20° using different stimulation methods. From industrial point of view, the controlled surface wetting has been in focus for a long time because it defines the liquid-solid contact area, and furthermore can enhance the mechanical and chemical bonding on the interface between the liquid and the solid. The used stimulation methods included batch-type methods: artificial daylight illumination and heat treatment and roll-to-roll methods: corona, argon plasma, IR (infra red)- and UV (ultra violet)-treatments. On the contrary to batch-type methods, the adjustment and switching of wetting was done only in seconds or fraction of seconds using roll-to-roll stimulation methods. This is significant in the converting processes of board since they are usually continuous, high volume operations. In addition, the creation of microfluidic patterns on the surface of TiO2 coated board using simple photomasking and surface stimulation was demonstrated. This provides new advantages and possibilities, especially in the field of intelligent printing. Limited durability and poor repellency against low surface tension liquids are presently the main limitations of LFS coatings.

Nanoparticle Deposition on Packaging Materials by Liquid Flame Spray

2013 ◽  
pp. 331-344 ◽  
Author(s):  
Hannu Teisala ◽  
Mikko Tuominen ◽  
Mikko Aromaa ◽  
Milena Stepien ◽  
Jyrki Mäkelä ◽  
...  
Keyword(s):  
Packaging Materials ◽  
Flame Spray ◽  
Nanoparticle Deposition ◽  
Liquid Flame Spray

Paperboard as a substrate for biocompatible slippery liquid-infused porous surfaces

2020 ◽  
Vol 35 (3) ◽  
pp. 479-489
Author(s):  
Mariia Mikriukova ◽  
Johanna Lahti ◽  
Janne Haapanen ◽  
Jyrki M. Mäkelä ◽  
Jurkka Kuusipalo
Keyword(s):  
Large Scale ◽  
Paper Industry ◽  
Necessary Condition ◽  
Flame Spray ◽  
Roll To Roll ◽  
Spray Method ◽  
Porous Surfaces ◽  
Optimization Parameters ◽  
Capillary Movement ◽  
Liquid Flame Spray

AbstractSlippery liquid-infused porous surfaces or SLIPS were first introduced in 2011 by Wong et al. who reported a bioinspired self-repairing surface with remarkable slippery properties. Generally, production of these surfaces includes fossil-based or expensive materials and processes that are available mainly in laboratory scale. In this study, slippery surfaces with sliding angles of less than 10° are obtained using fibre-based material – paperboard – that is commercially available in large-scale and also cheap compared to substrates generally used in this field. The hierarchical nanostructure that is a necessary condition for appropriate droplet mobility was obtained by the liquid flame spray method. This method is fast, scalable, has a variety of optimization parameters and can be utilized in roll-to-roll technology that is traditional in paper industry. In this work, paperboard serves not only as a substrate, but also as a reservoir for the lubricant, thus it is important to evaluate the affinity of the material for the oils and estimate the capillary movement. Therefore, Cobb and Klemm methods were used when choosing a paperboard material. In addition to synthetic oils, rapeseed oil was also utilized as a lubricant, which potentially leads to eco-friendly and recyclable slippery liquid-infused porous surfaces.

Adjustable wettability of paperboard by liquid flame spray nanoparticle deposition

2011 ◽  
Vol 257 (6) ◽  
pp. 1911-1917 ◽  
Author(s):  
Milena Stepien ◽  
Jarkko J. Saarinen ◽  
Hannu Teisala ◽  
Mikko Tuominen ◽  
Mikko Aromaa ◽  
...  
Keyword(s):  
Flame Spray ◽  
Nanoparticle Deposition ◽  
Liquid Flame Spray

Photocatalytic Activity of W-Doped TiO2 Nanopowders

2008 ◽  
Vol 11 (1) ◽  
Author(s):  
Katarzyna A. Michalow ◽  
Andri Vital ◽  
Andre Heel ◽  
Thomas Graule ◽  
Felix A. Reifler ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Photocatalytic Activity ◽  
Specific Surface ◽  
Dopant Concentration ◽  
Flame Spray ◽  
Titanium Tetra Isopropoxide ◽  
Flame Spray Synthesis ◽  
One Step ◽  
Tio2 Nanopowders ◽  
Doped Titanium Dioxide

AbstractPolycrystalline tungsten-doped titanium dioxide nanopowders within a dopant concentration of 0-1 at.% were prepared by a one-step flame spray synthesis (FSS). Mixtures of titanium tetra-isopropoxide dissolved in ethanol and tungsten hexacarbonyl solubilized in tetrahydrofuran were used as precursors. The specific surface area (SSA) of the powders was between 40 and 130 m

An Investigation onto Polydimethylsiloxane (PDMS) Printing Plate of Multiple Functional Solid Line by Flexographic

2013 ◽  
Vol 844 ◽  
pp. 158-161 ◽  
Author(s):  
M.I. Maksud ◽  
Mohd Sallehuddin Yusof ◽  
M. Mahadi Abdul Jamil
Keyword(s):  
Laser Ablation ◽  
Line Width ◽  
High Speed ◽  
Printed Electronics ◽  
Low Cost ◽  
Flexible Substrates ◽  
Large Area ◽  
Printing Plate ◽  
Roll To Roll ◽  
Printing Processes

Recently low cost production is vital to produce printed electronics by roll to roll manufacturing printing process like a flexographic. Flexographic has a high speed technique which commonly used for printing onto large area flexible substrates. However, the minimum feature sizes achieved with roll to roll printing processes, such as flexographic is in the range of fifty microns. The main contribution of this limitation is photopolymer flexographic plate unable to be produced finer micron range due to film that made by Laser Ablation Mask (LAMs) technology not sufficiently robust and consequently at micron ranges line will not be formed on the printing plate. Hence, polydimethylsiloxane (PDMS) is used instead of photopolymer. Printing trial had been conducted and multiple solid lines successfully printed for below fifty microns line width with no interference between two adjacent lines of the printed images.

Remarkably enhanced photocatalytic activity by nickel nanoparticle deposition on sulfur-doped titanium dioxide thin film

2009 ◽  
Vol 87 (3-4) ◽  
pp. 239-244 ◽  
Author(s):  
Masaki Yoshinaga ◽  
Katsutoshi Yamamoto ◽  
Nobuaki Sato ◽  
Koyu Aoki ◽  
Takeshi Morikawa ◽  
...  
Keyword(s):  
Thin Film ◽  
Titanium Dioxide ◽  
Photocatalytic Activity ◽  
Nanoparticle Deposition ◽  
Nickel Nanoparticle ◽  
Doped Titanium Dioxide

scholarly journals Utilization of Food Processing By-products in Extrusion Processing: A Review

2021 ◽  
Vol 4 ◽  
Author(s):  
Debomitra Dey ◽  
Jana K. Richter ◽  
Pichmony Ek ◽  
Bon-Jae Gu ◽  
Girish M. Ganjyal
Keyword(s):  
Functional Properties ◽  
Low Cost ◽  
Value Added ◽  
Raw Material ◽  
Practical Applications ◽  
Extrusion Processing ◽  
High Production Rate ◽  
Wide Range ◽  
Extruded Products ◽  
By Products

The processing of agricultural products into value-added food products yields numerous by-products or waste streams such as pomace (fruit and vegetable processing), hull/bran (grain milling), meal/cake (oil extraction), bagasse (sugar processing), brewer's spent grain (brewing), cottonseed meal (cotton processing), among others. In the past, significant work in exploring the possibility of the utilization of these by-products has been performed. Most by-products are highly nutritious and can be excellent low-cost sources of dietary fiber, proteins, and bioactive compounds such as polyphenols, antioxidants, and vitamins. The amount of energy utilized for the disposal of these materials is far less than the energy required for the purification of these materials for valorization. Thus, in many cases, these materials go to waste or landfill. Studies have been conducted to incorporate the by-products into different foods in order to promote their utilization and tackle their environmental impacts. Extrusion processing can be an excellent avenue for the utilization of these by-products in foods. Extrusion is a widely used thermo-mechanical process due to its versatility, flexibility, high production rate, low cost, and energy efficiency. Extruded products such as direct-expanded products, breakfast cereals, and pasta have been developed by researchers using agricultural by-products. The different by-products have a wide range of characteristics in terms of chemical composition and functional properties, affecting the final products in extrusion processing. For the practical applications of these by-products in extrusion, it is crucial to understand their impacts on the qualities of raw material blends and extruded products. This review summarizes the general differences in the properties of food by-products from different sources (proximate compositions, physicochemical properties, and functional properties) and how these properties and the extrusion processing conditions influence the product characteristics. The discussion of the by-product properties and their impacts on the extrudates and their nutritional profile can be useful for food manufacturers and researchers to expand their applications. The gaps in the literature have been highlighted for further research and better utilization of by-products with extrusion processing.

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