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Seipel, Sina
Publications (10 of 18) Show all publications
Tadesse Abate, M., Seipel, S., Viková, M., Vik, M., Ferri, A., Jinping, G., . . . Nierstrasz, V. (2019). 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 (pp. 1-8). United Kingdom, 459, Article ID 012026.
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
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2019 (English)Conference paper, Published paper (Other academic)
Abstract [en]

Photochromic textiles are of considerable interest for smart and functional textile applications due to their remarkable dynamic colour changing effect when irradiated with light of a certain wavelength. The use of resource efficient processes, such as digital inkjet printing and supercritical carbon dioxide (scCO2) dyeing techniques enables an economic production of those high-end functional products with high material costs. In this study, photochromic polyester fabric has been prepared by applying two commercially important photochromic dyes from spirooxazine (SO) and naphthopyran (NP) dye classes using scCO2-dyeing technique. The properties of scCO2 dyed photochromic fabrics were compared with the properties of the same dyes in a non-polar solvent, hexane. UV-Vis spectroscopy and a specially designed online colour measurement system capable of simultaneous UV irradiation and colour measurement were used to evaluate the photochromic colour behaviour. Both photochromic dye types embedded in textile as well as in solution showed significant reversible colour changing properties when exposed to UV light and revert to their original non-coloured form when the UV light is removed. The scCO2 dyed polyester fabrics exhibited similar trends of colour build-up as in solution, while contrasting behaviour was observed in terms of colour changing rates compared to their behaviour in solution.

Place, publisher, year, edition, pages
United Kingdom: , 2019
Keywords
Supercritical CO2 (scCO2), dyeing, Polyester, Photochromic, Spirooxazine, Naphthopyran
National Category
Textile, Rubber and Polymeric Materials
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-15312 (URN)10.1088/1757-899X/459/1/012026 (DOI)
Conference
Aegean International Textile and Advanced Engineering Conference AΙTAE 2018, Lasvos, Greece, September 5-7, 2018
Projects
SMDTex
Available from: 2018-11-14 Created: 2018-11-14 Last updated: 2019-01-09Bibliographically approved
Malm, V., Tadesse Abate, M., Seipel, S. & Nierstrasz, V. (2019). Supercritical Carbon Dioxide: A Sustainable Medium For Textile Dyeing And Finishing To Expand The Possibilities For A Resource Efficient Production Technology. In: Autex 19th World Textile Conference: Textiles at the Crossroads, 2019: . Paper presented at Autex 2019 World Textile Conference, Ghent, June 11-15, 2019.
Open this publication in new window or tab >>Supercritical Carbon Dioxide: A Sustainable Medium For Textile Dyeing And Finishing To Expand The Possibilities For A Resource Efficient Production Technology
2019 (English)In: Autex 19th World Textile Conference: Textiles at the Crossroads, 2019, 2019Conference paper, Oral presentation with published abstract (Other academic)
Abstract [en]

In our research group focusing on resource efficient processes, we explore the waterless supercritical carbon dioxide (SC-CO2) technology as a promising sustainable alternative to the traditional textile wet dyeing and water based finishing processes. Already, it is industrially implemented for textile dyeing, in particular for synthetic fabrics, and, being a dry color process it is regarded as only using ¼ of the physical footprint compared to conventional dyeing. This, does not only account for water and energy savings, but also includes advantages such as reduced emissions of harmful effluents, less amount of used dye, no or minimal use of auxiliaries (dispersing agents, carriers and surfactants) and low waste of material. To expand the industrial capabilities of this technology and open up for new business opportunities, our research focuses on textile functionalization in SC-CO2, either by only applying a functional material or to combine dyeing and functionalization of fabric in a single-step process. For polyethylene terephthalate (PET) fabric dyeing (step 1) and functionalization (step 2) in a sequential process where similar processing parameters (high temperature and pressure) was used, it was found that the color was extracted in the second step. The PET dyeing kinetics using SC-CO2 as a solvent depend on the transition in the amorphous regions of the fiber and diffusion properties and solvating power of the SC-CO2 with the dye. Hence, extensive studies on compatibility between fiber, dye and functional compounds include solubility of dye and functional material in SC-CO2, optimization of process parameters (pressure and temperature) and depressurization. This is crucial for understanding the adhesion mechanism between fiber and chemicals, and, particularly for a proper adhesion with a durable functional performance. Furthermore, as SC-CO2 is a good solvent for hydrophobic compounds, nonionics and organic compounds with low molecules weight, there are challenges in modifying conventional compound or using co-solvents. Activities within this domain in our research group stretch between dyeing and functionalization of textiles with end-use properties such as antimicrobial, photochromic, moisture management, water repellency, soil repellency and flame retardant.

Keywords
Supercritical carbon dioxide, dye, functionalisation, textile
National Category
Engineering and Technology
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-21591 (URN)
Conference
Autex 2019 World Textile Conference, Ghent, June 11-15, 2019
Available from: 2019-08-12 Created: 2019-08-12 Last updated: 2019-08-22Bibliographically 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
Seipel, S. & Yu, J. (2018). Inkjet printing and UV-LED curing of photochromic dyes for functional and smart textile applications. RSC Advances, 8(50), 28395-28404
Open this publication in new window or tab >>Inkjet printing and UV-LED curing of photochromic dyes for functional and smart textile applications
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2018 (English)In: RSC Advances, ISSN 2046-2069, E-ISSN 2046-2069, Vol. 8, no 50, p. 28395-28404Article in journal (Refereed) Published
Abstract [en]

Health concerns as a result of harmful UV-rays drive the development of UV-sensors of different kinds. In this research, a UV-responsive smart textile is produced by inkjet printing and UV-LED curing of a specifically designed photochromic ink on PET fabric. This paper focuses on tuning and characterizing the colour performance of a photochromic dye embedded in a UV-curable ink resin. The influence of industrial fabrication parameters on the crosslinking density of the UV-resin and hence on the colour kinetics is investigated. A lower crosslinking density of the UV-resin increases the kinetic switching speed of the photochromic dye molecules upon isomerization. By introducing an extended kinetic model, which defines rate constants kcolouration, kdecayand kdecolouration, the colour performance of photochromic textiles can be predicted. Fabrication parameters present a flexible and fast alternative to polymer conjugation to control kinetics of photochromic dyes in a resin. In particular, industrial fabrication parameters during printing and curing of the photochromic ink are used to set the colour yield, colouration/decolouration rates and the durability, which are important characteristics towards the development of a UV-sensor for smart textile applications.

Place, publisher, year, edition, pages
Royal Society of Chemistry, 2018
Keywords
inkjet printing, UV curing, photochromic, smart textile, functional textile
National Category
Engineering and Technology Materials Engineering
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-14901 (URN)10.1039/C8RA05856C (DOI)000442616800013 ()2-s2.0-85052053586 (Scopus ID)
Available from: 2018-08-08 Created: 2018-08-08 Last updated: 2018-11-30Bibliographically approved
Seipel, S., Yu, J., Periyasamy, A., Viková, M., Vik, M. & Nierstrasz, V. (2018). Resource-Efficient Production of a Smart Textile UV Sensor Using Photochromic Dyes: Characterization and Optimization. In: Prof. Dr. Yordan Kyosev, Prof. Dr. Boris Mahltig, Prof. Dr. Anne Schwarz-Pfeiffer (Ed.), Narrow and Smart Textiles: (pp. 251-257). Springer Publishing Company
Open this publication in new window or tab >>Resource-Efficient Production of a Smart Textile UV Sensor Using Photochromic Dyes: Characterization and Optimization
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2018 (English)In: Narrow and Smart Textiles / [ed] Prof. Dr. Yordan Kyosev, Prof. Dr. Boris Mahltig, Prof. Dr. Anne Schwarz-Pfeiffer, Springer Publishing Company, 2018, p. 251-257Chapter in book (Refereed)
Place, publisher, year, edition, pages
Springer Publishing Company, 2018
Keywords
UV curing, digital inkjet printing, smart textile, photochromic
National Category
Materials Engineering
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-13265 (URN)10.1007/978-3-319-69050-6 (DOI)978-3-319-69049-0 (ISBN)978-3-319-69050-6 (ISBN)
Available from: 2017-12-19 Created: 2017-12-19 Last updated: 2017-12-20Bibliographically approved
Seipel, S., Yu, J., Periyasamy, A., Viková, M., Vik, M. & Nierstrasz, V. (2017). Characterization and optimization of an inkjet-printed smart textile UV-sensor cured with UV-LED light. In: IOP Conference Series: Materials Science and Engineering: . Paper presented at AUTEX World Textile Conference, Corfu, May 29-31, 2017. , 254, Article ID 072023.
Open this publication in new window or tab >>Characterization and optimization of an inkjet-printed smart textile UV-sensor cured with UV-LED light
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2017 (English)In: IOP Conference Series: Materials Science and Engineering, 2017, Vol. 254, article id 072023Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

For the development of niche products like smart textiles and other functional high-end products, resource-saving production processes are needed. Niche products only require small batches, which makes their production with traditional textile production techniques time-consuming and costly. To achieve a profitable production, as well as to further foster innovation, flexible and integrated production techniques are a requirement. Both digital inkjet printing and UV-light curing contribute to a flexible, resource-efficient, energy-saving and therewith economic production of smart textiles. In this article, a smart textile UV-sensor is printed using a piezoelectric drop-on-demand printhead and cured with a UV-LED lamp. The UVcurable ink system is based on free radical polymerization and the integrated UVsensing material is a photochromic dye, Reversacol Ruby Red. The combination of two photoactive compounds, for which UV-light is both the curer and the activator, challenges two processes: polymer crosslinking of the resin and color performance of the photochromic dye. Differential scanning calorimetry (DSC) is used to characterize the curing efficiency of the prints. Color measurements are made to determine the influence of degree of polymer crosslinking on the developed color intensities, as well as coloration and decoloration rates of the photochromic prints. Optimized functionality of the textile UV-sensor is found using different belt speeds and lamp intensities during the curing process.

Keywords
UV curing, digital inkjet printing, smart textile, photochromic
National Category
Engineering and Technology
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-12284 (URN)10.1088/1757-899X/254/7/072023 (DOI)000417214900083 ()
Conference
AUTEX World Textile Conference, Corfu, May 29-31, 2017
Available from: 2017-07-07 Created: 2017-07-07 Last updated: 2018-11-29Bibliographically approved
Seipel, S. (2017). Resource-efficient production of a textile UV-sensor for healthcare applications. In: Books of abstracts: Aachen-Dresden-Denkendorf International Textile Conference, Stuttgart, 2017: . Paper presented at Aachen-Dresden-Denkendorf International Textile Conference, Stuttgart Germany, November 30-December 1, 2017.
Open this publication in new window or tab >>Resource-efficient production of a textile UV-sensor for healthcare applications
2017 (English)In: Books of abstracts: Aachen-Dresden-Denkendorf International Textile Conference, Stuttgart, 2017, 2017Conference paper, Oral presentation with published abstract (Other academic)
Keywords
digital inkjet printing, UV curing, photochromic, sensor, healthcare textile
National Category
Materials Engineering
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-13042 (URN)
Conference
Aachen-Dresden-Denkendorf International Textile Conference, Stuttgart Germany, November 30-December 1, 2017
Available from: 2017-12-05 Created: 2017-12-05 Last updated: 2017-12-15Bibliographically approved
Yu, J., Seipel, S. & Nierstrasz, V. (2016). DEVELOPMENT OF HYDROPHOBIC INK FOR INKJET PRINTING OF FUNCTIONAL TEXTILE. In: : . Paper presented at The 90th Textile Institute World Conference, Poznan, April 25-28, 2016.
Open this publication in new window or tab >>DEVELOPMENT OF HYDROPHOBIC INK FOR INKJET PRINTING OF FUNCTIONAL TEXTILE
2016 (English)Conference paper, Oral presentation with published abstract (Other academic)
Abstract [en]

Digital inkjet printing is a resource effective and flexible manufacturing method, which has great potential to replace the large-scale conventional textile processes, and stimulates innovation in small and flexible production such as in the domain of smart textiles. Water-repellent textile has great importance in the application of sport- and work- wear. In this research, a hydrophobic ink free from fluorocarbon is formulated. The rheological properties, surface tension and particle size were characterized in order to fit the jetting parameter of the print head. In order to improve the adhesion between the deposited ink and substrate, plasma and alkaline pre-treatment were performed on polyester substrate. The novel formulation was inkjet printed as the solid bock on polyester and polyamide 6,6. The hydrophobicity of the fabrics was measured by water contract angle measurement. The effect of pre-treatment on the adhesion of ink to substrate as well as on functional property of textile was evaluated after washing and abrasion tests.   

National Category
Natural Sciences
Identifiers
urn:nbn:se:hb:diva-10822 (URN)
Conference
The 90th Textile Institute World Conference, Poznan, April 25-28, 2016
Available from: 2016-10-03 Created: 2016-10-03 Last updated: 2017-05-04Bibliographically approved
Seipel, S., Yu, J. & Nierstrasz, V. (Eds.). (2016). Digital inkjet printing as flexible and resource-saving production technique for a smart textile UV-sensor. Paper presented at 16th World Textile Conference AUTEX, June 8-10, Ljubljana, 2016. Ljubljana: Association of Universities for Textiles
Open this publication in new window or tab >>Digital inkjet printing as flexible and resource-saving production technique for a smart textile UV-sensor
2016 (English)Conference proceedings (editor) (Other academic)
Place, publisher, year, edition, pages
Ljubljana: Association of Universities for Textiles, 2016. p. 2
Keywords
Digital inkjet printing, smart textile, photochromic dyes, radiation curing
National Category
Engineering and Technology
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-10111 (URN)
Conference
16th World Textile Conference AUTEX, June 8-10, Ljubljana, 2016
Available from: 2016-06-22 Created: 2016-06-20 Last updated: 2017-05-02Bibliographically approved
Seipel, S., Yu, J. & Nierstrasz, V. (2016). Digital inkjet printing as flexible and resource-saving production technique for a smart textile UV-sensor. In: : . Paper presented at 16th World Textile Conference AUTEX, Ljubljana, June 8 - 10, 2016..
Open this publication in new window or tab >>Digital inkjet printing as flexible and resource-saving production technique for a smart textile UV-sensor
2016 (English)Conference paper, Poster (with or without abstract) (Other academic)
National Category
Textile, Rubber and Polymeric Materials
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-13792 (URN)
Conference
16th World Textile Conference AUTEX, Ljubljana, June 8 - 10, 2016.
Available from: 2018-03-07 Created: 2018-03-07 Last updated: 2018-04-03Bibliographically approved
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