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Publications (10 of 72) Show all publications
Kahoush, M., Behary, N., Cayla, A., Guan, J. & Nierstrasz, V. (2018). Bio-Electro-Fenton for the Treatment of Textile Wastewater. In: Jürgen Andreaus (Ed.), Proceedings of the 10th International Conference of Fiber and Polymer Biotechnology: . Paper presented at 10th International Conference of Fiber and Polymer Biotechnology, Balneário Camboriú, Brazil, April 24-27, 2018, (pp. 73-74). , 1, Article ID OP 22.
Open this publication in new window or tab >>Bio-Electro-Fenton for the Treatment of Textile Wastewater
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2018 (English)In: Proceedings of the 10th International Conference of Fiber and Polymer Biotechnology / [ed] Jürgen Andreaus, 2018, Vol. 1, p. 73-74, article id OP 22Conference paper, Oral presentation with published abstract (Refereed)
National Category
Engineering and Technology
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-15262 (URN)
Conference
10th International Conference of Fiber and Polymer Biotechnology, Balneário Camboriú, Brazil, April 24-27, 2018,
Projects
SMDTEX
Funder
EU, European Research Council, 2015-1594/001-001-EMJD
Available from: 2018-10-28 Created: 2018-10-28 Last updated: 2018-11-16Bibliographically approved
Kahoush, M., Behary, N., Cayla, A. & Nierstrasz, V. (2018). Bio-Fenton and Bio-Electro-Fenton as sustainable methods for degrading organic pollutants in wastewater. Process Biochemistry, 64C, 237-247
Open this publication in new window or tab >>Bio-Fenton and Bio-Electro-Fenton as sustainable methods for degrading organic pollutants in wastewater
2018 (English)In: Process Biochemistry, ISSN 1359-5113, E-ISSN 1873-3298, Vol. 64C, p. 237-247Article in journal (Refereed) Epub ahead of print
Abstract [en]

In this paper, an overview of the bio-Fenton and bio-electro-Fenton processes for sustainable wastewater treatment is provided. These two methods have been used in recent years to treat many kinds of persistent pollutants while maintaining the sustainability in materials and power consumption compared to conventional methods, through efficient eco-designed systems. The different kinds of electrodes used for the bio-electro-Fenton are reviewed, along with the influencing factors affecting the efficiency of these methods, and the different designs used to construct the reactors. Moreover, the various organic pollutants from industrial sources, like effluents from textile and pesticides facilities, treated using these processes are also reported. However, the main challenge facing these technologies is to improve their performance, stability and lifetime to achieve more sustainable and cost-effective wastewater treatment on pilot and large scales. Hence, future perspectives and trends are discussed to overcome the drawbacks of these methods.

Place, publisher, year, edition, pages
Elsevier, 2018
Keywords
Bio-electro-Fenton, Electrodes, Microbial fuel cells, Environmental applications, Wastewater treatment
National Category
Environmental Biotechnology
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-12896 (URN)10.1016/j.procbio.2017.10.003 (DOI)
Projects
SMDTEX
Available from: 2017-10-23 Created: 2017-10-23 Last updated: 2017-12-19Bibliographically approved
Tadesse Abate, M., Seipel, S. & Nierstrasz, V. (2018). Comparison of the photochromic behaviour of dyes in solution and on polyester fabric applied by supercritical carbon dioxide. In: : . Paper presented at Aegean International Textile and Advanced Engineering Conference AΙTAE 2018, Lasvos, Greece, September 5-7, 2018.
Open this publication in new window or tab >>Comparison of the photochromic behaviour of dyes in solution and on polyester fabric applied by supercritical carbon dioxide
2018 (English)Conference paper, Oral presentation only (Other academic)
Keywords
Supercritical CO2 (scCO2), dyeing, Polyester, Photochromic, Spirooxazine, Naphthopyran
National Category
Textile, Rubber and Polymeric Materials
Identifiers
urn:nbn:se:hb:diva-15312 (URN)
Conference
Aegean International Textile and Advanced Engineering Conference AΙTAE 2018, Lasvos, Greece, September 5-7, 2018
Available from: 2018-11-14 Created: 2018-11-14 Last updated: 2018-11-14
Eutionnat-Diffo, P., Nierstrasz, V., Campagne, C., Zeng, X., Cayla, A., Guan, J. & Chen, Y. (2018). Correlation between heat transfer of polyester textiles and its adhesion with 3D-printed extruded thermoplastic filaments. In: IOP publishers (Ed.), 18th AUTEX World Textile Conference, June 20-22, 2018, Istanbul, Turkey: . Paper presented at 18th AUTEX World Textile Conference, June 20-22, 2018, Istanbul, Turkey (pp. 118-121). , Article ID 3132.
Open this publication in new window or tab >>Correlation between heat transfer of polyester textiles and its adhesion with 3D-printed extruded thermoplastic filaments
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2018 (English)In: 18th AUTEX World Textile Conference, June 20-22, 2018, Istanbul, Turkey / [ed] IOP publishers, 2018, p. 118-121, article id 3132Conference paper, Published paper (Refereed)
Abstract [en]

FDM technology used for printing functionalized layers on textiles brought new challenges such as the understanding and the improvement of the adhesion performance of the thermoplastic filaments on synthetic textile materials. In addition to the impact of printing parameters, the correlation between the heat transfer and structure of the textile material and the adhesion performance after varying printer platform temperature was an important parameter considered in this paper. A factorial design, using material density, direction, and structure and platform temperature as factors, was followed. 3D-printed materials made of PLA filaments deposited on polyester woven and knit materials were manufactured on a dual-head printer and their adhesion was measured according to DIN EN ISO 13937-2 and ISO 11339 and the heat transfer of the fabrics according to ASTM D4966-98, ISO 6330 and ISO 22007-2. The findings showed that the heat transfer and structure of textile materials affect the adhesion properties of the 3D-printed material.

Keywords
3D-printing, Fused Deposition Modelling (FDM), Polyester textile, PLA filament, Heat transfer, Thermal conductivity, Adhesion, Additive Manufacturing (AM)
National Category
Textile, Rubber and Polymeric Materials
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-14988 (URN)
Conference
18th AUTEX World Textile Conference, June 20-22, 2018, Istanbul, Turkey
Funder
EU, European Research Council
Available from: 2018-08-14 Created: 2018-08-14 Last updated: 2018-08-17Bibliographically approved
Dural-Erem, A. & Nierstrasz, V. (2018). Development of coating for incorporeation of beneficial spores on hospital textiles. Fibres and Textiles in Eastern Europe, 5(131), 59-62
Open this publication in new window or tab >>Development of coating for incorporeation of beneficial spores on hospital textiles
2018 (English)In: Fibres and Textiles in Eastern Europe, ISSN 1230-3666, Vol. 5, no 131, p. 59-62Article in journal (Refereed) Published
Keywords
hospital acquired infections, antimicrobial, probiotic, functional textile
National Category
Materials Engineering
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-15191 (URN)
Projects
ITex
Funder
VINNOVA, 2014-00719
Available from: 2018-10-09 Created: 2018-10-09 Last updated: 2018-11-16Bibliographically approved
Dural-Erem, A., Niehaus, K.-L. & Nierstrasz, V. (2018). Development of Probiotic Printings for Polyester Fabrics.. Journal of Textiles and Engineer (Tekstil ve Mühendis), 25(111), 208-213
Open this publication in new window or tab >>Development of Probiotic Printings for Polyester Fabrics.
2018 (English)In: Journal of Textiles and Engineer (Tekstil ve Mühendis), ISSN 1300-7599, Vol. 25, no 111, p. 208-213Article in journal (Refereed) Published
Keywords
probiotcs, antimicrobial, functional textile
National Category
Materials Engineering
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-15190 (URN)
Projects
ITex
Available from: 2018-10-09 Created: 2018-10-09 Last updated: 2018-11-16Bibliographically approved
Yu, J. (2018). Digital inkjet functionalization of water-repellent textile for smart textile application. Journal of Materials Science
Open this publication in new window or tab >>Digital inkjet functionalization of water-repellent textile for smart textile application
2018 (English)In: Journal of Materials Science, ISSN 0022-2461, E-ISSN 1573-4803Article in journal (Refereed) Published
Abstract [en]

Digital inkjet printing is a production technology with high potential in resource efficient processes, which features both flexibility and productivity. In this research, waterborne, fluorocarbon-free ink containing polysiloxane in the form of micro-emulsion is formulated for the application of water-repellent sports- and work wear. The physicochemical properties of the ink such as surface tension, rheological properties and particle size are characterized, and thereafter inkjet printed as solid square pattern (10 × 10 cm) on polyester and polyamide 66 fabrics. The water contact angle (WCA) of the functional surfaces is increased from < 90° to ca. 140° after 10 inkjet printing passes. Moreover, the functional surface shows resistance to wash and abrasion. The WCA of functional surfaces is between 130° and 140° after 10 wash cycles, and is ca. 140° after 20000 revolutions of rubbing. The differences in construction of the textile as well as ink–filament interaction attribute to the different transportation behaviors of the ink on the textile, reflected in the durability of the functional layer on the textile. The functionalized textile preserves its key textile feature such as softness and breathability. Inkjet printing shows large potential in high-end applications such as customized functionalization of textiles in the domain of smart textiles.

National Category
Natural Sciences
Identifiers
urn:nbn:se:hb:diva-15019 (URN)10.1007/s10853-018-2521-z (DOI)000436424400046 ()2-s2.0-85048593407 (Scopus ID)
Funder
Knowledge Foundation, 20150040
Available from: 2018-08-24 Created: 2018-08-24 Last updated: 2018-08-27Bibliographically approved
Tadesse, M. G., Nierstrasz, V. & Yu, J. (2018). Effect of chemical concentration on the rheology of inkjet conductive inks. In: : . Paper presented at 18th World Textile Conference of Autex, Istanbul, 20-22 June, 2018.. Istanbul
Open this publication in new window or tab >>Effect of chemical concentration on the rheology of inkjet conductive inks
2018 (English)Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

Viscosity and surface tension are the fundamental rheological property of an ink for inkjet printing. In this work, we optimized the viscosity and surface tension of inkjet inks by varying the concentration of glycerol with water, PEDOT-PSS with glycerol and water, finally by adding the surfactant. The surface resistance of the sample was characterized by four-probe measurement principle. The change in volume of PEDOT-PSS in water, as well as the change in weight of glycerol in water has got a great influence on the viscosity on both temperature dependence and shear dependence behaviour of the ink solution. The surface tension of the solution changed from 37 to 28mN/m due to the addition of Triton. Varying the volume of PEDOT-PSS and the volume of glycerol in water has a great influence on the viscosity of the ink solution for inkjet printing. Viscosity drops from 12.5 to 9.5 mPa s with the addition of Triton at 25 oC. The PEDOT-PSS solution was found to be temperature dependence but not shear dependence as it is a Newtonian fluid. The sample was used to connect the light emitting diode (LED), and hence the electrical conductivity, with a surface resistance of 0.158 KΩ/square, was sufficient enough to give transfer current for LED lamp. The rheology of the inkjet ink is very critical for the successful droplet formation of the inkjet printing.

Place, publisher, year, edition, pages
Istanbul: , 2018
Keywords
shear rate, surface tension, surfactant, viscosity
National Category
Engineering and Technology
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-14990 (URN)
Conference
18th World Textile Conference of Autex, Istanbul, 20-22 June, 2018.
Projects
Quality inspection and evaluation of functional or smart textile fabric surface by skin contact mechanics
Available from: 2018-08-15 Created: 2018-08-15 Last updated: 2018-08-15Bibliographically approved
Biswas, T., Yu, J. & Nierstrasz, V. (2018). Functionalization of textiles with enzymes by inkjet printing. In: : . Paper presented at AUTEX 2018, Istanbul, June 20-22, 2018.
Open this publication in new window or tab >>Functionalization of textiles with enzymes by inkjet printing
2018 (English)Conference paper, Poster (with or without abstract) (Refereed)
Abstract [en]

The catalytic activity of the enzymes can be introduced to textile surfaces for bio-sensing applications by immobilizing them through a resource-efficient deposition method such as inkjet printing [1]. Contrary to conventional dispensing methods, drop-on-demand inkjet printing can provide with high precision deposition of these enzymes along with flexibility for small-scale production [2]. To the best of our knowledge, studies on the inkjetting of enzymes are limited and often uses a modified/adapted commercial paper printer for jetting [3]. Additionally, the effect of ink formulation and printing condition variables on the activity of enzyme are not well explored. Many of such variables suggested for jetting of proteins [4] includes e.g. ink rheology, operating temperature, drop size retention, and the shear force acting on the ink. In our research effect of these variables are studied using a digital inkjet printer (Xennia Carnelian) with a Sapphire QS10 piezo-electric print head (Fujifilm Dimatix, USA). Lysozyme is used as a model enzyme for printing due to its well-known structure and catalytic mechanism. Effect of temperature and shear force development within the print head on lysozyme activity is investigated. Additionally, pre-treatment of the fabric to improve ink adhesion through various surface activation processes are studied. Finally, remaining activity of the printed enzymes over washing is evaluated to ensure the fastness property.

Acknowledgment

This research project is funded by University of Borås, Sweden.

References

[1]     Li J, Rossignol F, Macdonald J. Inkjet printing for biosensor fabrication: combining chemistry and technology for advanced manufacturing. Lab on a Chip 2015;15(12):2538-2558.

[2]     Nierstrasz V, Yu J, Seipel S. Towards more flexible, sustainable and energy-efficient textile functionalization processes: Digital inkjet in functional and smart textile production. In: 9th Aachen-Dresden International Textile Conference 2015; 2015.

[3]     Yamazoe H. Fabrication of protein micropatterns using a functional substrate with convertible protein-adsorption surface properties. J Biomed Mater Res A 2012;100(2):362-9.

[4]     Delaney JT, Smith PJ, Schubert US. Inkjet printing of proteins. Soft Matter 2009;5(24):4866-4877.

National Category
Engineering and Technology
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-14430 (URN)
Conference
AUTEX 2018, Istanbul, June 20-22, 2018
Available from: 2018-07-02 Created: 2018-07-02 Last updated: 2018-07-10Bibliographically approved
Malm, V., Seoane, F. & Nierstrasz, V. (2018). Fused deposition modelling – Towards 3D printed electrodes on fabric for surface electromyography (sEMG). In: : . Paper presented at IDTechEx Berlin.
Open this publication in new window or tab >>Fused deposition modelling – Towards 3D printed electrodes on fabric for surface electromyography (sEMG)
2018 (English)Conference paper, Poster (with or without abstract) (Other academic)
Abstract [en]

Surface electromyography (sEMG) monitoring has promising applications within the field of human robot communication where wearable electrodes are used as the interface. This research investigates the production of flexible 3D printed electrodes using electrically conductive filaments, of thermoplastic polyurethane containing carbon black, and polyester fabric as substrate. Dry 3D printed electrodes of varying thickness, due to increased number of layers, were compared to conventional electrolytic gel electrodes. Initial tests show that the volume resistivity of 3D printed electrodes increased with increased number of layers. This because, with increased number of layers the diffusion between layers deteriorates and hinders conductive particle connections. Additional heat-treatments using hot press plates to improve diffusion between layers were promising as volume resistivity decreased with 200 % for all samples. As a first step to evaluate the 3D printed electrodes, skin-electrode impedance measurements were performed, and compared with measurements of conventional electrodes. Results showed that resistance and reactance versus frequency curves had similar trending slopes, decreasing with increasing frequency. However, this corresponded only between the thinnest (200 μm) 3D-printed dry electrode having a volume resistivity of 6.2 Ω cm and the conventional gel electrode. Future studies regarding the influence of platform and extruder temperature are planned for, focusing on improved diffusion between layers and increased conduction for proper electron transfer. 

Keywords
3D printing, electrodes, conductive filament, fabric, diffusion, printing parameters, surface electromyography
National Category
Textile, Rubber and Polymeric Materials Composite Science and Engineering
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-15187 (URN)
Conference
IDTechEx Berlin
Funder
Region Västra Götaland, 2016-01342
Available from: 2018-10-08 Created: 2018-10-08 Last updated: 2018-10-08
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-4369-9304

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