Ändra sökning
Länk till posten
Permanent länk

Direktlänk
Publikationer (9 of 9) Visa alla publikationer
Warlin, N., Nilsson, E., Guo, Z., Mankar, S., Valsange, N., Rehnberg, N., . . . Zhang, B. (2021). Synthesis and melt-spinning of partly bio-based thermoplastic poly(cycloacetal-urethane)s toward sustainable textiles. Polymer Chemistry, 12(34), 4942-4953
Öppna denna publikation i ny flik eller fönster >>Synthesis and melt-spinning of partly bio-based thermoplastic poly(cycloacetal-urethane)s toward sustainable textiles
Visa övriga...
2021 (Engelska)Ingår i: Polymer Chemistry, ISSN 1759-9954, E-ISSN 1759-9962, Vol. 12, nr 34, s. 4942-4953Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

A rigid diol with a cyclic acetal structure was synthesized by facile acetalation of fructose-based 5-hydroxymethyl furfural (HMF) and partly bio-based di-trimethylolpropane (di-TMP). This diol (Monomer T) was copolymerized with potentially bio-based flexible polytetrahydrofuran and diisocyanates to prepare thermoplastic poly(cycloacetal-urethane)s. A modified one-step solution polymerization protocol resulted in relatively high molecular weights (Mn ∼ 41.5-98.9 kDa). All the obtained poly(cycloacetal-urethane)s were amorphous with tuneable glass transition temperatures up to 104 °C. Thermogravimetric analysis indicated that these polymers were thermally stable up to 253 °C and had a relatively high pyrolysis char residue, which may indicate potential inherent flame resistance. Melt rheology measurements were performed to determine a suitable processing window between 165-186 °C, after which the polymer was successfully melt-spun into ∼150 meters of homogeneous fibres at 185 °C. The resulting fibres could be readily hydrolysed under acidic conditions, resulting in partial recovery of the original chemical building blocks.

Ort, förlag, år, upplaga, sidor
Royal Society of Chemistry, 2021
Nyckelord
Esters, Flame resistance, Glass transition, Melt spinning, Reinforced plastics, Textiles, Thermogravimetric analysis, Acidic conditions, Chemical building blocks, High molecular weight, Polytetrahydrofuran, Processing windows, Solution polymerization, Sustainable textiles, Trimethylolpropane, Spinning (fibers)
Nationell ämneskategori
Polymerkemi
Identifikatorer
urn:nbn:se:ri:diva-56680 (URN)10.1039/d1py00450f (DOI)2-s2.0-85114348253 (Scopus ID)
Anmärkning

Funding details: 2016/1489; Funding details: Crafoordska Stiftelsen, 20160774, 20180939; Funding details: Kungliga Fysiografiska Sällskapet i Lund; Funding text 1: This work was financially supported by the Mistra Foundation (the “STEPS” project, No. 2016/1489), the Crafoord Foundation (No. 20160774 and 20180939), and the Royal Physiographic Society in Lund. Nilson Group AB is acknowledged for financial support. We thank Åsa Halldén Björklund and Linda Zellner from Perstorp AB and John P. Jensen from Nordzucker Technology for valuable discussions, Bartosz Schmidt for the SEC analysis, Sofia Essén for the mass spectrometry measurements.

Tillgänglig från: 2021-10-04 Skapad: 2021-10-04 Senast uppdaterad: 2023-06-08Bibliografiskt granskad
Lund, A., Rundqvist, K., Nilsson, E., Yu, L., Hagström, B. & Müller, C. (2018). Energy harvesting textiles for a rainy day: woven piezoelectrics based on melt-spun PVDF microfibres with a conducting core. npj Flexible Electronics, 2(1), Article ID 9.
Öppna denna publikation i ny flik eller fönster >>Energy harvesting textiles for a rainy day: woven piezoelectrics based on melt-spun PVDF microfibres with a conducting core
Visa övriga...
2018 (Engelska)Ingår i: npj Flexible Electronics, E-ISSN 2397-4621, Vol. 2, nr 1, artikel-id 9Artikel i tidskrift (Refereegranskat) Published
Nationell ämneskategori
Textil-, gummi- och polymermaterial
Identifikatorer
urn:nbn:se:ri:diva-71509 (URN)10.1038/s41528-018-0022-4 (DOI)
Tillgänglig från: 2024-01-26 Skapad: 2024-01-26 Senast uppdaterad: 2024-02-12Bibliografiskt granskad
Lund, A., Rundqvist, K., Nilsson, E., Yu, L., Hagström, B. & Müller, C. (2018). Energy harvesting textiles for a rainy day: woven piezoelectrics based on melt-spun PVDF microfibres with a conducting core. npj Flexible Electronics, 2, Article ID 9.
Öppna denna publikation i ny flik eller fönster >>Energy harvesting textiles for a rainy day: woven piezoelectrics based on melt-spun PVDF microfibres with a conducting core
Visa övriga...
2018 (Engelska)Ingår i: npj Flexible Electronics, Vol. 2, artikel-id 9Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Recent advances in ubiquitous low-power electronics call for the development of light-weight and flexible energy sources. The textile format is highly attractive for unobtrusive harvesting of energy from e.g., biomechanical movements. Here, we report the manufacture and characterisation of fully textile piezoelectric generators that can operate under wet conditions. We use a weaving loom to realise textile bands with yarns of melt-spun piezoelectric microfibres, that consist of a conducting core surrounded by β-phase poly(vinylidene fluoride) (PVDF), in the warp direction. The core-sheath constitution of the piezoelectric microfibres results in a—for electronic textiles—unique architecture. The inner electrode is fully shielded from the outer electrode (made up of conducting yarns that are integrated in the weft direction) which prevents shorting under wet conditions. As a result, and in contrast to other energy harvesting textiles, we are able to demonstrate piezoelectric fabrics that do not only continue to function when in contact with water, but show enhanced performance. The piezoelectric bands generate an output of several volts at strains below one percent. We show that integration into the shoulder strap of a laptop case permits the continuous generation of four microwatts of power during a brisk walk. This promising performance, combined with the fact that our solution uses scalable materials and well-established industrial manufacturing methods, opens up the possibility to develop wearable electronics that are powered by piezoelectric textiles.

Nyckelord
Electrical and electronic engineering, Energy harvesting, Materials for devices
Nationell ämneskategori
Elektroteknik och elektronik Textil-, gummi- och polymermaterial
Identifikatorer
urn:nbn:se:ri:diva-34718 (URN)10.1038/s41528-018-0022-4 (DOI)
Tillgänglig från: 2018-08-15 Skapad: 2018-08-15 Senast uppdaterad: 2024-06-13Bibliografiskt granskad
Nilsson, E., Hagström, B. & Rössler, J. (2016). Electrically conductive fibres - recent development. In: : . Paper presented at 55th Man Made fibre Congress 2016, 20-22 september, 2016, Dornbirn, Österrike.
Öppna denna publikation i ny flik eller fönster >>Electrically conductive fibres - recent development
2016 (Engelska)Konferensbidrag, Muntlig presentation med publicerat abstract (Övrigt vetenskapligt)
Nationell ämneskategori
Annan elektroteknik och elektronik
Identifikatorer
urn:nbn:se:ri:diva-30233 (URN)
Konferens
55th Man Made fibre Congress 2016, 20-22 september, 2016, Dornbirn, Österrike
Tillgänglig från: 2017-08-08 Skapad: 2017-08-08 Senast uppdaterad: 2019-06-20Bibliografiskt granskad
Nilsson, E., Rigdahl, M. & Hagström, B. (2015). Electrically conductive polymeric bi-component fibers containing a high load of low-structured carbon black (ed.). Journal of Applied Polymer Science, 132(29), Article ID 42255.
Öppna denna publikation i ny flik eller fönster >>Electrically conductive polymeric bi-component fibers containing a high load of low-structured carbon black
2015 (Engelska)Ingår i: Journal of Applied Polymer Science, ISSN 0021-8995, E-ISSN 1097-4628, Vol. 132, nr 29, artikel-id 42255Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Melt spinning at semi-industrial conditions of carbon black (CB) containing textiles fibers with enhanced electrical conductivity suitable for heating applications is described. A conductive compound of CB and high density polyethylene (HDPE) was incorporated into the core of bi-component fibers which had a sheath of polyamide 6 (PA6). The rheological and fiber-forming properties of a low-structured and a high-structured CB/HDPE composite were compared in terms of their conductivity. The low-structured CB gave the best trade-off between processability and final conductivity. This was discussed in terms of the strength of the resulting percolated network of carbon particles and its effect on the spin line stability during melt spinning. The conductivity was found to be further enhanced with maintained mechanical properties by an in line thermal annealing of the fibers at temperatures in the vicinity of the melting point of HDPE. By an adequate choice of CB and annealing conditions a conductivity of 1.5 S/cm of the core material was obtained. The usefulness of the fibers for heating applications was demonstrated by means of a woven fabric containing the conductive fibers in the warp direction. By applying a voltage of 48 V the surface temperature of the fabric rose from 20 to 30°C.

Ort, förlag, år, upplaga, sidor
John Wiley and Sons Inc., 2015
Nyckelord
composites, conducting polymers, fibers, graphene and fullerenes, nanotubes
Nationell ämneskategori
Materialteknik
Identifikatorer
urn:nbn:se:ri:diva-13312 (URN)10.1002/app.42255 (DOI)2-s2.0-84929050556 (Scopus ID)
Tillgänglig från: 2016-09-22 Skapad: 2016-09-22 Senast uppdaterad: 2019-07-03Bibliografiskt granskad
Andersson, D., Nilsson, E. & Wetter, G. (2015). Interconnection of electrically conductive fibersfor application in smart textiles. In: : . Paper presented at in Proceedings of the SMTA Pan Pacific Microelectronics Symposium, Pan Pacific, January 25-28.
Öppna denna publikation i ny flik eller fönster >>Interconnection of electrically conductive fibersfor application in smart textiles
2015 (Engelska)Konferensbidrag, Muntlig presentation med publicerat abstract (Övrigt vetenskapligt)
Nationell ämneskategori
Elektroteknik och elektronik
Identifikatorer
urn:nbn:se:ri:diva-30246 (URN)
Konferens
in Proceedings of the SMTA Pan Pacific Microelectronics Symposium, Pan Pacific, January 25-28
Tillgänglig från: 2017-08-09 Skapad: 2017-08-09 Senast uppdaterad: 2023-05-16Bibliografiskt granskad
Nilsson, E., Oxfall, H., Wandelt, W., Rychwalski, R. W. & Hagström, B. (2013). Melt spinning of conductive textile fibers with hybridized graphite nanoplatelets and carbon black filler (ed.). Journal of Applied Polymer Science, 130(4), 2579-2587
Öppna denna publikation i ny flik eller fönster >>Melt spinning of conductive textile fibers with hybridized graphite nanoplatelets and carbon black filler
Visa övriga...
2013 (Engelska)Ingår i: Journal of Applied Polymer Science, ISSN 0021-8995, E-ISSN 1097-4628, Vol. 130, nr 4, s. 2579-2587Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

In this study, two different carbon fillers: carbon black (CB) and graphite nanoplatelets (GNP) are studied as conductive fillers for the preparation of conductive polypropylene (PP) nanocomposites. In order to obtain a homogenous dispersion of GNP, GNP/PP composites were prepared by two different methods: solid state mixing (SSM) and traditional melt mixing (MM). The result shows that MM is more efficient in the dispersion of GNP particles compared to SSM method. PP nanocomposites containing only one conductive filler and two fillers were prepared at different filler concentrations. Based on the analysis of electrical and rheological properties of the prepared nanocomposites, it shows that a hybridized composite with equal amounts of GNP and CB has favorable processing properties. Conductive fibers with a core/sheath structure were produced on a bicomponent melt spinning line. The core materials of these fibers are the hybridized GNP/CB/PP nanocomposite and the sheath is pure polyamide. It was found that GNPs were separated during melt and cold drawing which results in the decrease of conductivity. However, the conductivity could partly be restored by the heat treatment.

Nyckelord
conducting polymers, fibers, graphene and fullerenes, manufacturing, nanotubes, textiles
Nationell ämneskategori
Materialteknik
Identifikatorer
urn:nbn:se:ri:diva-13325 (URN)10.1002/app.39480 (DOI)2-s2.0-84883050196 (Scopus ID)
Tillgänglig från: 2016-09-22 Skapad: 2016-09-22 Senast uppdaterad: 2020-12-01Bibliografiskt granskad
Nilsson, E., Lund, A., Jonasson, C., Johansson, C. & Hagström, B. (2013). Poling and characterization of piezoelectric polymer fibers for use in textile sensors. Sensors and Actuators A-Physical, 201, 477-486
Öppna denna publikation i ny flik eller fönster >>Poling and characterization of piezoelectric polymer fibers for use in textile sensors
Visa övriga...
2013 (Engelska)Ingår i: Sensors and Actuators A-Physical, ISSN 0924-4247, E-ISSN 1873-3069, Vol. 201, s. 477-486Artikel i tidskrift (Refereegranskat) Published
Nationell ämneskategori
Textil-, gummi- och polymermaterial
Identifikatorer
urn:nbn:se:ri:diva-71507 (URN)10.1016/j.sna.2013.08.011 (DOI)
Tillgänglig från: 2024-01-26 Skapad: 2024-01-26 Senast uppdaterad: 2024-02-12Bibliografiskt granskad
Nilsson, E., Oxfall, H., Wandelt, W., Rychwalski, R. & Hagström, B. (2012). Electrically conductive textile fibres with hybridized graphite nanoplatelets and carbon black filler. In: : . Paper presented at Nordic polymer days, May 29-31, Copenhagen, Denmark.
Öppna denna publikation i ny flik eller fönster >>Electrically conductive textile fibres with hybridized graphite nanoplatelets and carbon black filler
Visa övriga...
2012 (Engelska)Konferensbidrag, Enbart muntlig presentation (Övrigt vetenskapligt)
Nationell ämneskategori
Textil-, gummi- och polymermaterial
Identifikatorer
urn:nbn:se:ri:diva-34238 (URN)
Konferens
Nordic polymer days, May 29-31, Copenhagen, Denmark
Tillgänglig från: 2018-07-18 Skapad: 2018-07-18 Senast uppdaterad: 2019-06-28Bibliografiskt granskad
Identifikatorer
ORCID-id: ORCID iD iconorcid.org/0000-0002-1950-8762

Sök vidare i DiVA

Visa alla publikationer