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Persson, Nils-Krister
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Publications (10 of 45) Show all publications
Huniade, C., Mulder, R., Milad, A. M., Bashir, T. & Persson, N.-K. (2019). Disposable, green smart textiles based on conductive graphite fibres. In: : . Paper presented at 30th International Conference on Diamond and Carbon Materials Conference, Sevilla, September 8-12, 2019.
Open this publication in new window or tab >>Disposable, green smart textiles based on conductive graphite fibres
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2019 (English)Conference paper, Oral presentation with published abstract (Other academic)
Abstract [en]

Smart textiles, a part of the present boom of wearables, is at the risk of being a newenvironmental problem as many axioms of sustainability are violated here, that of driving(mass) consumption, mixing of components of different material origin and no obvious wastehandling system when used and worn out. Smartness has been synonymous with integration ofelectronic conductivity functionality, typically realised by metal wires. Carbon allomorphsshowing low electrical resistivity might be an environmental friendly alternative.

Here we report on attempts with simple conductive graphite systems from which we makeconductive textile fibres, the production of which could be up-scaled to industrial volumes.Coating textile bulk fibers as polyester, polyamide, wool and cellulose based regenerate onesrather than (melt/wet) spinning new fibers, the mechanical properties are sustained makingthem processable within existing textile processes infrastructure.

Several different graphite compositions and different yarn topologies are compared. Twisting isshown to greatly increase the overall yarn conductance. Fabrics are manufactured with thegraphite yarns in the double role of being structural as well as functional. Furthermore, analphabet of fundamental electrical circuitry elements are demonstrated; conductor, capacitor,inductor. The devices are consisting of non-toxic components that are disposable andcompostable; showing the benefits of carbon based soft electronics.

Keywords
graphite, smart textiles, fibre, sustainability
National Category
Textile, Rubber and Polymeric Materials
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-21770 (URN)
Conference
30th International Conference on Diamond and Carbon Materials Conference, Sevilla, September 8-12, 2019
Available from: 2019-09-24 Created: 2019-09-24 Last updated: 2019-10-14Bibliographically approved
Olson, N., Urbański, J., Persson, N.-K., Starosta-Sztuczka, J. & Fuentes, M. (2019). Sensor Technology, Gamification, HapticInterfaces in an Assistive Wearable. Journal on Technology and Persons with Disabilities, 7, 79-87
Open this publication in new window or tab >>Sensor Technology, Gamification, HapticInterfaces in an Assistive Wearable
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2019 (English)In: Journal on Technology and Persons with Disabilities, Vol. 7, p. 79-87Article in journal (Refereed) Published
Abstract [en]

In this paper, we introduce the solution proposed by the SUITCEYES project in the form of a haptic intelligent personalized interface (HIPI) that integrates elements from the areas of smart textiles, sensors, semantic technologies, image processing, face and object recognition, machine learning, affective computing, and gamification. We report on recent developments in the project, which include experiments with sensors for detection of obstacles, psychophysical experiments with temperatures and vibrations, development of a number of high performing algorithms for object recognition, and also the design, development, and experimentation with a smart-textile based garment that allows flexible positioning of sensors and actuators.

Place, publisher, year, edition, pages
Northridge, USA: , 2019
Keywords
Deafblindness, haptic interfaces, assistive wearable, sensor technologies, gamification, machine learning
National Category
Social Sciences
Identifiers
urn:nbn:se:hb:diva-21180 (URN)
Projects
SUITCEYES
Funder
EU, Horizon 2020, Grant number:780814
Available from: 2019-06-11 Created: 2019-06-11 Last updated: 2019-06-14Bibliographically approved
Milad, A. M., Bashir, T. & Persson, N.-K. (2019). The role and importance of surface modification of polyester fabrics by chitosan and hexadecylpyridinium chloride for the electrical and electro-thermal performance of graphene-modified smart textiles. New Journal of Chemistry, 17(43), 6643-6658, Article ID 10.1039/c8nj05445b.
Open this publication in new window or tab >>The role and importance of surface modification of polyester fabrics by chitosan and hexadecylpyridinium chloride for the electrical and electro-thermal performance of graphene-modified smart textiles
2019 (English)In: New Journal of Chemistry, ISSN 1144-0546, E-ISSN 1369-9261, Vol. 17, no 43, p. 6643-6658, article id 10.1039/c8nj05445bArticle in journal (Refereed) Published
Abstract [en]

Graphene has the potential to create highly valuable electrical conductive textile systems with maintained pliability and psychological comfort. There have already been numerous studies regarding electrically functionalized graphene-coated textiles. However, processing development is far from being exhausted. Here we have studied electro-thermal textiles based on the most common fibers, polyester, and an industry-relevant graphene impregnation method by introducing surface pre-modification of fabrics for graphene-modified textile processing. For this purpose, polyester fabrics were treated with four different cationic agents and impregnated with graphene oxide (GO) colloidal particles. Then, direct chemical reduction of GO to an electrically conductive graphene oxide (rGO) was performed. A pristine fabric modified by rGO showed a high resistance of 27.3 kΩ □−1 without any electro-thermal activity, whilst chitosan-treated (CS) and hexadecylpyridinium chloride-treated (HDPC) fabrics had resistance values of 2.7 and 0.59 kΩ □−1 respectively, and excellent heat propagation with a good temperature distribution. The steady-state temperature of CS-treated and HDPC-treated fabrics increased from 28 °C and 33 °C to 60 °C and 120 °C, respectively, as the voltage applied increased from 10 V to 30 V. These rGO-modified fabrics also have excellent electro-mechanical performance, and are good candidates for flexible strain sensor applications.

Keywords
GRAPHENE
National Category
Engineering and Technology
Research subject
Teacher Education and Education Work
Identifiers
urn:nbn:se:hb:diva-21009 (URN)10.1039/c8nj05445b (DOI)
Available from: 2019-05-08 Created: 2019-05-08 Last updated: 2019-10-14Bibliographically approved
Korn, O., Holt, R., Kontopoulos, E., Kappers, A. M. .., Persson, N.-K. & Olson, N. (2018). Empowering Persons with Deafblindness: Designing an Intelligent Assistive Wearable in the SUITCEYES Project. In: ACM International Conference Proceeding Series: Proceedings of the 11th PErvasive Technologies Related to Assistive Environments Conference. Paper presented at PETRA '18 The 11th PErvasive Technologies Related to Assistive Environments Conference, Corfu Greece, June 26-29, 2018) (pp. 545-551). New York, NY, USA: ACM Digital Library
Open this publication in new window or tab >>Empowering Persons with Deafblindness: Designing an Intelligent Assistive Wearable in the SUITCEYES Project
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2018 (English)In: ACM International Conference Proceeding Series: Proceedings of the 11th PErvasive Technologies Related to Assistive Environments Conference, New York, NY, USA: ACM Digital Library, 2018, p. 545-551Conference paper, Published paper (Refereed)
Place, publisher, year, edition, pages
New York, NY, USA: ACM Digital Library, 2018
Series
ACM International Conference Proceeding Series
National Category
Social Sciences
Identifiers
urn:nbn:se:hb:diva-15332 (URN)978-1-4503-6390-7 (ISBN)
Conference
PETRA '18 The 11th PErvasive Technologies Related to Assistive Environments Conference, Corfu Greece, June 26-29, 2018)
Note

URLs: 

https://dl.acm.org/ft_gateway.cfm?id=3201541&ftid=1982028&dwn=1&#URLTOKEN#

https://dl.acm.org/results.cfm?within=recurringEvents.recurringEventID%3DRE196&withindisp=PETRA&query=olson&Go.x=0&Go.y=0

Available from: 2018-11-25 Created: 2018-11-25 Last updated: 2018-11-27Bibliographically approved
Milad, A. M., Bashir, T. & Persson, N.-K. (2018). The role and optimization of cationic agents for adhesion and electrical conductivity of graphene-coated e-textiles. In: : . Paper presented at 11th International Symposium on Flexible Organic Electronics (ISFOE18), Thessaloniki, July 2-5, 2018.. Nanotexnology
Open this publication in new window or tab >>The role and optimization of cationic agents for adhesion and electrical conductivity of graphene-coated e-textiles
2018 (English)Conference paper, Oral presentation only (Other (popular science, discussion, etc.))
Abstract [en]

Textiles with electrical properties, known as e-textiles, are realized by different methods. Among these, graphene-coated textiles have attracted great attention due to its multifunctional properties such as being flexible lightweight; and offering interesting optical and electrical properties. While Aqueous dispersion of graphene oxide (GO) could be prepared and applied as a dye to textiles via a simple and cost-effectivene dip-coating method. Moreover, the GO could be reduced to graphene directly on the surface of the textiles. However, the GO flakes do not adhere properly to most textiles at any pH values probably because of electrostatic repulsion between the particles and the textile substrate as both the aqueous solution of GO and most textiles carry negative surface charges. Though, GO flakes could be easily assembled on a positively charged surface. Therefore, textiles need to be cationized before the dip-coating in the GO dispersion. In this work a number of both organic and inorganic cationic agents such as chitosan, Poly(diallyldimethylammonium chloride), Hexadecylpyridinium chloride, and Polyethylenimine are applied to the textiles before the coating process. Further on the so formed systems are characterized by scanning electron microscopy, FT-IR measurement, four-terminal sensing surface resistance measurement, diffusion reflection spectroscopy, electro-thermal analysis, and electro-mechanical analysis. The results display the fact that utilizing an appropriate cationic agent not only enhances the absorption of GO onto the textile surfaces but also play a critical role for the electrical conductivities and electro-thermal properties of the coated fabrics, with values varying between 12 to 0.6 kΩ.cm-1.

Place, publisher, year, edition, pages
Nanotexnology, 2018
National Category
Engineering and Technology
Identifiers
urn:nbn:se:hb:diva-21010 (URN)
Conference
11th International Symposium on Flexible Organic Electronics (ISFOE18), Thessaloniki, July 2-5, 2018.
Available from: 2019-05-08 Created: 2019-05-08 Last updated: 2019-10-14Bibliographically approved
Bashir, T., Skrifvars, M. & Persson, N.-K. (2017). High-strength electrically conductive fibers: functionalization of polyamide, aramid and polyester fibers with PEDOT polymer. Polymers for Advanced Technologies, 29(1), 310-318, Article ID 10.1002/pat.4116.
Open this publication in new window or tab >>High-strength electrically conductive fibers: functionalization of polyamide, aramid and polyester fibers with PEDOT polymer
2017 (English)In: Polymers for Advanced Technologies, ISSN 1042-7147, E-ISSN 1099-1581, Vol. 29, no 1, p. 310-318, article id 10.1002/pat.4116Article in journal (Refereed) Published
Abstract [en]

In this work, high-performance fibers such as aramid (Twaron), polyamide (PA6), polyester (PET), and hybrid Twaron/PA6 fibers were transformed into electroactive fibers by coating them with conjugated polymer, poly(3,4-ethylenedioxythiophene) (PEDOT) through vapor phase polymerization (VPP) method. The VPP is considered as an efficient technique for depositing CPs on different substrates regardless of their lower solubility in various solvents. In this paper, PEDOT-coated high-performance fibers were prepared under already optimized reaction conditions, and then a comparison between electrical, thermal, and mechanical properties of different fibers, before and after coating, was made. The obtained coated fibers were characterized through scanning electron microscope (SEM), thermogravimetric analysis (TGA), 2-probe electrical resistance measurement method, and tensile testing. It was revealed that at particular reaction conditions, all high performance textile substrates were successfully converted into electroactive fibers. The voltage-current (V-I) characteristics showed that PEDOT-coated polyester fibers exhibited highest conductivity value among all other substrate fibers. The active PEDOT layers on high performance fibers could behave as an antistatic coating to minimize the risks associated with static charges at work places. Also, the obtained fibers have potential to be used as smart materials for various medical, sports, and military applications.

Place, publisher, year, edition, pages
John Wiley & Sons, 2017
Keywords
Functional fibers, High performance fibers, PEDOT coating, VPP process
National Category
Textile, Rubber and Polymeric Materials
Research subject
Resource Recovery
Identifiers
urn:nbn:se:hb:diva-13429 (URN)10.1002/pat.4116 (DOI)000418367000031 ()2-s2.0-85026517387 (Scopus ID)
Available from: 2018-01-13 Created: 2018-01-13 Last updated: 2018-06-20Bibliographically approved
Persson, N.-K., Skrifvars, M. & Persson, N.-K. (2017). High-strengthelectrically conductive fibers: Functionalization of polyamide, aramid andpolyester fibers with PEDOT polymer. Polymers for Advanced Technologies
Open this publication in new window or tab >>High-strengthelectrically conductive fibers: Functionalization of polyamide, aramid andpolyester fibers with PEDOT polymer
2017 (English)In: Polymers for Advanced Technologies, ISSN 1042-7147, E-ISSN 1099-1581Article in journal (Refereed) Published
Abstract [en]

In this work, high-performance fibers such as aramid (Twaron), polyamide (PA6), polyester (PET), and hybrid Twaron/PA6 fibers were transformed into electroactive fibers by coating them with conjugated polymer, poly(3,4-ethylenedioxythiophene) (PEDOT) through vapor phase polymerization (VPP) method. The VPP is considered as an efficient technique for depositing CPs on different substrates regardless of their lower solubility in various solvents. In this paper, PEDOT-coated high-performance fibers were prepared under already optimized reaction conditions, and then a comparison between electrical, thermal, and mechanical properties of different fibers, before and after coating, was made. The obtained coated fibers were characterized through scanning electron microscope (SEM), thermogravimetric analysis (TGA), 2-probe electrical resistance measurement method, and tensile testing. It was revealed that at particular reaction conditions, all high performance textile substrates were successfully converted into electroactive fibers. The voltage-current (V-I) characteristics showed that PEDOT-coated polyester fibers exhibited highest conductivity value among all other substrate fibers. The active PEDOT layers on high performance fibers could behave as an antistatic coating to minimize the risks associated with static charges at work places. Also, the obtained fibers have potential to be used as smart materials for various medical, sports, and military applications.

National Category
Textile, Rubber and Polymeric Materials
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-13504 (URN)10.1002/pat.4116 (DOI)000418367000031 ()2-s2.0-85026517387 (Scopus ID)
Available from: 2018-01-15 Created: 2018-01-15 Last updated: 2018-01-15Bibliographically approved
Maziz, A., Concas, A., Stålhand, J., Persson, N.-K. & Jager, E. W. (2017). Knitting and weaving artificial muscles. Science Advances, 3(1)
Open this publication in new window or tab >>Knitting and weaving artificial muscles
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2017 (English)In: Science Advances, E-ISSN 2375-2548, Vol. 3, no 1Article in journal (Refereed) Published
Abstract [en]

A need exists for artificial muscles that are silent, soft, and compliant, with performance characteristics similar to those of skeletal muscle, enabling natural interaction of assistive devices with humans. By combining one of humankind’s oldest technologies, textile processing, with electroactive polymers, we demonstrate here the feasibility of wearable, soft artificial muscles made by weaving and knitting, with tunable force and strain. These textile actuators were produced from cellulose yarns assembled into fabrics and coated with conducting polymers using a metal-free deposition. To increase the output force, we assembled yarns in parallel by weaving. The force scaled linearly with the number of yarns in the woven fabric. To amplify the strain, we knitted a stretchable fabric, exhibiting a 53-fold increase in strain. In addition, the textile construction added mechanical stability to the actuators. Textile processing permits scalable and rational production of wearable artificial muscles, and enables novel ways to design assistive devices.

Keywords
Artificial muscles, advanced textile technology, Conducting Polymers, soft robotics, actuators
National Category
Textile, Rubber and Polymeric Materials
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-13500 (URN)10.1126/sciadv.1600327 (DOI)000393789900001 ()2-s2.0-85021692202 (Scopus ID)
Available from: 2018-01-15 Created: 2018-01-15 Last updated: 2018-11-30Bibliographically approved
Persson, N.-K. (2017). Nextgeneration Smart Textiles - morphing and actuating devices. In: E-MRS 2017 Spring Meeting, Strasbourg: . Paper presented at E-MRS 2017 Spring Meeting, Strasbourg Germany, May 22-26, 2017.
Open this publication in new window or tab >>Nextgeneration Smart Textiles - morphing and actuating devices
2017 (English)In: E-MRS 2017 Spring Meeting, Strasbourg, 2017Conference paper, Oral presentation with published abstract (Refereed)
National Category
Materials Engineering
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-13505 (URN)
Conference
E-MRS 2017 Spring Meeting, Strasbourg Germany, May 22-26, 2017
Available from: 2018-01-15 Created: 2018-01-15 Last updated: 2018-01-15Bibliographically approved
Carney Almroth, B. M., Åström, L., Roslund, S., Petersson, H., Johansson, M. & Persson, N.-K. (2017). Quantifying shedding of synthetic fibers from textiles; a source ofmicroplastics released into the environment. Environmental science and pollution research international, Article ID 10.1007/s11356-017-0528-7.
Open this publication in new window or tab >>Quantifying shedding of synthetic fibers from textiles; a source ofmicroplastics released into the environment
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2017 (English)In: Environmental science and pollution research international, ISSN 0944-1344, E-ISSN 1614-7499, article id 10.1007/s11356-017-0528-7Article in journal (Refereed) Published
Abstract [en]

Microplastics in the environment are a subject of intense research as they pose a potential threat to marine organisms. Plastic fibers from textiles have been indicated as a major source of this type of contaminant, entering the oceans via wastewater and diverse non-point sources. Their presence is also documented in terrestrial samples. In this study, the amount of microfibers shedding from synthetic textiles was measured for three materials (acrylic, nylon, polyester), knit using different gauges and techniques. All textiles were found to shed, but polyester fleece fabrics shed the greatest amounts, averaging 7360 fibers/m−2/L−1 in one wash, compared with polyester fabrics which shed 87 fibers/m−2/L−1. We found that loose textile constructions shed more, as did worn fabrics, and high twist yarns are to be preferred for shed reduction. Since fiber from clothing is a potentially important source of microplastics, we suggest that smarter textile construction, prewashing and vacuum exhaustion at production sites, and use of more efficient filters in household washing machines could help mitigate this problem.

National Category
Oceanography, Hydrology and Water Resources
Identifiers
urn:nbn:se:hb:diva-13502 (URN)10.1007/s11356-017-0528-7 (DOI)000419944100019 ()2-s2.0-85032340088 (Scopus ID)
Available from: 2018-01-15 Created: 2018-01-15 Last updated: 2018-12-01Bibliographically approved
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