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Publications (10 of 137) Show all publications
Nierstrasz, V. (2023). Resource effective textile processes for functional and smart textiles. In: : . Paper presented at 8th International Symposium Technical Textiles – Present and Future, November 23, 2023, Iasi, Romania.
Open this publication in new window or tab >>Resource effective textile processes for functional and smart textiles
2023 (English)Conference paper, Oral presentation only (Refereed)
Keywords
Textile Materials Technology, resource effective processes, smart textile, functional textile
National Category
Textile, Rubber and Polymeric Materials
Identifiers
urn:nbn:se:hb:diva-30929 (URN)
Conference
8th International Symposium Technical Textiles – Present and Future, November 23, 2023, Iasi, Romania
Available from: 2023-11-27 Created: 2023-11-27 Last updated: 2023-12-01Bibliographically approved
Nierstrasz, V. (2023). Resource effective textile processes for functional and smart textiles. In: : . Paper presented at Seminar 'Hot Topics in Science and Technology' Lodz Univ. of Technol..
Open this publication in new window or tab >>Resource effective textile processes for functional and smart textiles
2023 (English)Conference paper, Oral presentation only (Other academic)
Keywords
Textile Materials Technology, resource effective processes, smart textile, functional textile
National Category
Textile, Rubber and Polymeric Materials
Identifiers
urn:nbn:se:hb:diva-30928 (URN)
Conference
Seminar 'Hot Topics in Science and Technology' Lodz Univ. of Technol.
Available from: 2023-11-27 Created: 2023-11-27 Last updated: 2023-12-01Bibliographically approved
Biswas, T., Yu, J. & Nierstrasz, V. (2022). Author Correction: Effects of ink characteristics and piezo-electric inkjetting parameters on lysozyme activity. Scientific Reports, 12(1), Article ID 21758.
Open this publication in new window or tab >>Author Correction: Effects of ink characteristics and piezo-electric inkjetting parameters on lysozyme activity
2022 (English)In: Scientific Reports, E-ISSN 2045-2322, Vol. 12, no 1, article id 21758Article in journal, Editorial material (Other academic) Published
National Category
Textile, Rubber and Polymeric Materials
Identifiers
urn:nbn:se:hb:diva-29298 (URN)10.1038/s41598-022-25674-5 (DOI)000934547900031 ()2-s2.0-85144141584 (Scopus ID)
Note

Correction to: Scientific Reports https://doi.org/10.1038/s41598-019-54723-9, published online 03 December 2019

Available from: 2023-01-17 Created: 2023-01-17 Last updated: 2024-02-01Bibliographically approved
Biswas, T., Yu, J. & Nierstrasz, V. (2022). Digital inkjet printing of antimicrobial lysozyme on pretreated polyester fabric. In: : . Paper presented at 10th INTERNATIONAL TEXTILE, CLOTHING & DESIGN CONFERENCE, October 2nd to 5th 2022, DUBROVNIK, CROATIA.
Open this publication in new window or tab >>Digital inkjet printing of antimicrobial lysozyme on pretreated polyester fabric
2022 (English)Conference paper, Published paper (Refereed)
Abstract [en]

Lysozyme was inkjet printed on two different polyester fabrics considering several challenges of printing enzymes on synthetic fabric surfaces. Wettability of both the fabrics were improved by alkaline pre-treatment resulting reduction in water contact angle to 60±2 from 95°±3 and to 80°±2 from 115°±2 for thinner and coarser fabric respectively. Activity of lysozyme in the prepared ink was 9240±34 units/ml and reduced to 5946±23 units/ml as of collected after jetting process (before printing on fabric). The formulated ink was effectively inkjet printed on alkali treated polyester fabric for antimicrobial applications. Retention of higher activity of the printed fabric requires further studies on enzyme-fibre binding mechanisms and understanding protein orientation on fabric surface after printing

Keywords
inkjet, lysozyme, antimicrobial, digital printing
National Category
Textile, Rubber and Polymeric Materials Biocatalysis and Enzyme Technology Other Medical Biotechnology Medical Materials
Identifiers
urn:nbn:se:hb:diva-28930 (URN)
Conference
10th INTERNATIONAL TEXTILE, CLOTHING & DESIGN CONFERENCE, October 2nd to 5th 2022, DUBROVNIK, CROATIA
Available from: 2022-11-17 Created: 2022-11-17 Last updated: 2022-11-17Bibliographically approved
Biswas, T., Yu, J. & Nierstrasz, V. (2022). Inkjet printing of enzymes on synthetic fabrics. In: : . Paper presented at 11th International Conference on Fiber & Polymer Biotechnology, 13th to 15th November 2022, Graz, Austria.
Open this publication in new window or tab >>Inkjet printing of enzymes on synthetic fabrics
2022 (English)Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

Enzymes can be immobilized on textiles to impart anti-microbial properties in a more environment-friendly manner compared to conventional biocide-based solutions. Such application requires ensuring precise, flexible and contamination-free immobilization methods that can be offered by digital printing compared to coating or screen-printing techniques. Drop-on-demand inkjet printing is a resource-efficient technology that can ensure these requirements. The use of polyester and polyamide-based fabrics is rising for applications ranging from apparel and home furnishing to hygiene and medical textiles. These fibers offer superior chemical, physical, and mechanical properties due to their inert nature but challenge the printing process due to hydrophobicity and lack of functional groups. Lysozyme and tyrosinase are two enzymes showing great potential for grafting on synthetic fabrics paving the way to use them for inkjet printing as well.

Challenges for inkjet printing of enzymes on synthetic fabric surfaces come in multiple forms i.e. ink recipe formation, printer mechanics and fabric surface characteristics. The ink must maintain a suitable viscosity and surface tension for effective drop ejection and a feasible ionic nature for enzyme activity. Then, the enzyme must be able to sustain the temperature and shear stress generated inside an inkjet printhead. Finally, influential fabric characteristics include surface structure, pore size distribution, evaporation rate and binding mechanism. By considering these parameters, lysozyme and tyrosinase were successfully printed on variously modified synthetic fabrics using a combination of sustainable technologies.

National Category
Textile, Rubber and Polymeric Materials Biocatalysis and Enzyme Technology Medical Materials
Identifiers
urn:nbn:se:hb:diva-28931 (URN)
Conference
11th International Conference on Fiber & Polymer Biotechnology, 13th to 15th November 2022, Graz, Austria
Available from: 2022-11-17 Created: 2022-11-17 Last updated: 2022-11-24Bibliographically approved
Biswas, T., Yu, J. & Nierstrasz, V. (2022). Piezoelectric inkjet printing of tyrosinase (polyphenol oxidase) enzyme on atmospheric plasma treated polyamide fabric. Scientific Reports, 12(1), Article ID 6828.
Open this publication in new window or tab >>Piezoelectric inkjet printing of tyrosinase (polyphenol oxidase) enzyme on atmospheric plasma treated polyamide fabric
2022 (English)In: Scientific Reports, E-ISSN 2045-2322, Vol. 12, no 1, article id 6828Article in journal (Refereed) Published
Abstract [en]

Tyrosinase enzyme was digitally printed on plasma pretreated polyamide-6,6 fabric using several sustainable technologies. Ink containing carboxymethyl cellulose was found to be the most suitable viscosity modifier for this enzyme. Before and after being deposited on the fabric surface, the printed inks retained enzyme activity of 69% and 60%, respectively, compared to activity prior printing process. A good number of the printed enzyme was found to be strongly adsorbed on the fabric surface even after several rinsing cycles due to surface activation by plasma treatment. Rinsed out fabrics retained a maximum activity of 34% resulting from the well-adsorbed enzymes. The activity of tyrosinase on printed fabrics was more stable than ink solution for at least 60 days. Effects of pH, temperature and enzyme kinetics on ink solution and printed fabrics were assessed. Tyrosinase printed synthetic fabrics can be utilized for a range of applications from biosensing and wastewater treatment to cultural heritage works.

Keywords
covalent immobilization, biosensor, adsorption
National Category
Textile, Rubber and Polymeric Materials
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-27875 (URN)10.1038/s41598-022-10852-2 (DOI)000787775900070 ()2-s2.0-85128933473 (Scopus ID)
Available from: 2022-05-16 Created: 2022-05-16 Last updated: 2023-01-11Bibliographically approved
Hashemi Sanatgar, R., Cayla, A., Guan, J., Chen, G., Nierstrasz, V. & Campagne, C. (2022). Piezoresistive Properties of 3D-Printed Polylactic Acid (PLA) Nanocomposites. Polymers, 14(15), Article ID 2981.
Open this publication in new window or tab >>Piezoresistive Properties of 3D-Printed Polylactic Acid (PLA) Nanocomposites
Show others...
2022 (English)In: Polymers, E-ISSN 2073-4360, Vol. 14, no 15, article id 2981Article in journal (Refereed) Published
Abstract [en]

An increasing interest is focused on the application of 3D printing for sensor manufacturing. Using 3D printing technology offers a new approach to the fabrication of sensors that are both geometrically and functionally complex. This work presents the analysis of the 3D-printed thermoplastic nanocomposites compress under the applied force. The response for the corresponding resistance changes versus applied load is obtained to evaluate the effectiveness of the printed layer as a pressure/force sensor. Multi-walled carbon nanotubes (MWNT) and high-structured carbon black (Ketjenblack) (KB) in the polylactic acid (PLA) matrix were extruded to develop 3D-printable filaments. The electrical and piezoresistive behaviors of the created 3D-printed layers were investigated. The percolation threshold of MWNT and KB 3D-printed layers are 1 wt.% and 4 wt.%, respectively. The PLA/1 wt.% MWNT 3D-printed layers with 1 mm thickness exhibit a negative pressure coefficient (NPC) characterized by a decrease of about one decade in resistance with increasing compressive loadings up to 18 N with a maximum strain up to about 16%. In the cyclic mode with a 1 N/min force rate, the PLA/1 wt.% MWNT 3D-printed layers showed good performance with the piezoresistive coefficient or gauge factor (G) of 7.6 obtained with the amplitude of the piezoresistive response (Ar) of about -0.8. KB composites could not show stable piezoresistive responses in a cyclic mode. However, under high force rate compression, the PLA/4 wt.% KB 3D-printed layers led to responses of large sensitivity (Ar = −0.90) and were exempt from noise with a high value of G = 47.6 in the first cycle, which is a highly efficient piezoresistive behavior.

Place, publisher, year, edition, pages
MDPI, 2022
Keywords
piezoresistive properties, 3D printing, fused deposition modelling (FDM), polylactic acid (PLA), multi-walled carbon nanotubes (MWNT), high-structured carbon black (KB)
National Category
Textile, Rubber and Polymeric Materials Polymer Technologies
Identifiers
urn:nbn:se:hb:diva-28412 (URN)10.3390/polym14152981 (DOI)000840231400001 ()35893945 (PubMedID)2-s2.0-85137106152 (Scopus ID)
Note

(This article belongs to the Special Issue Polymers and Their Application in 3D Printing)

Available from: 2022-08-25 Created: 2022-08-25 Last updated: 2024-01-17Bibliographically approved
Morshed, M. N. & Nierstrasz, V. (2022). Removal of pharmaceutical residue from wastewater using catalytically active functional textiles. In: 11th International Conference on Fiber & Polymer Biotechnology; 13th – 15th November 2022, Graz, Austria: . Paper presented at 11th International Conference on Fiber & Polymer Biotechnology. Graz, Austria
Open this publication in new window or tab >>Removal of pharmaceutical residue from wastewater using catalytically active functional textiles
2022 (English)In: 11th International Conference on Fiber & Polymer Biotechnology; 13th – 15th November 2022, Graz, Austria, Graz, Austria, 2022Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

The increase in the human life expectancy coupled with the rise in population has boosted the use of pharmaceuticals. These biologically active compounds do not fully metabolize by the human body and excreted out into the wastewater which often resistant to conventional wastewater treatment processes.  Herein, this study presents the progress and prospects of catalytically active textiles-based heterogeneous bio-electro-Fenton reactor for effective removal of pharmaceutical residue from wastewater. The reactor consists of a bio-anode prepared by immobilized redox enzyme on synthetic nonwoven textiles and a cathode by zerovalent iron nanoparticles immobilized functional textiles has been extensively explored for removal of pharmaceuticals from simulated wastewater. The results of this current study will be of great importance as its expected to deliver the much-needed upgrade in the conventional wastewater treatment system with bio-based, sustainable, and textiles-based system. 

Place, publisher, year, edition, pages
Graz, Austria: , 2022
National Category
Industrial Biotechnology
Identifiers
urn:nbn:se:hb:diva-28948 (URN)
Conference
11th International Conference on Fiber & Polymer Biotechnology
Note

Acknowledgment

The authors would like to thank Sparbanksstiftelsen Sjuhärad and the University of Borås for their financial and technical support for this project

Available from: 2022-11-22 Created: 2022-11-22 Last updated: 2022-11-24Bibliographically approved
Nierstrasz, V. (2022). Resource-effective textile processes for functional and smart textiles.. In: 11th International Conference on Fiber & Polymer Biotechnology: . Paper presented at 11th International Conference on Fiber & Polymer Biotechnology, Graz, Austria, 13-15 November, 2022.. Graz, Austria, 11
Open this publication in new window or tab >>Resource-effective textile processes for functional and smart textiles.
2022 (English)In: 11th International Conference on Fiber & Polymer Biotechnology, Graz, Austria, 2022, Vol. 11Conference paper, Oral presentation only (Other academic)
Abstract [en]

Research at the research group Textile Material Technology at the University of Borås focuses on the development of advanced functional and smart materials using novel, resource-effective processes to produce such materials in an effective and efficient way.

Examples of such technologies in the TMT group are:

· Digital printing

o Inkjet for functional and smart textiles

o 3D printing

o Valvejet (Chromojet)

· Supercritical CO2 (liquid CO2)

· Spray technology

· UV curing

· Plasma

· Catalysis and Biocatalysis

It is a very multidisciplinary domain where e.g. interface and surface science, (bio)catalysis, chemistry, biotechnology, digital technologies (inkjet, 2D and 3D printing), 3D body scanning, coating, printing, dyeing, and nanotechnology meet.

Place, publisher, year, edition, pages
Graz, Austria: , 2022
Keywords
Supercritical CO2 (liquid CO2), Spray technology, UV curing, Plasma, Catalysis and Biocatalysis
National Category
Industrial Biotechnology Textile, Rubber and Polymeric Materials
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-28978 (URN)
Conference
11th International Conference on Fiber & Polymer Biotechnology, Graz, Austria, 13-15 November, 2022.
Available from: 2022-11-28 Created: 2022-11-28 Last updated: 2023-01-04Bibliographically approved
Biswas, T., Yu, J. & Nierstrasz, V. (2022). Sequential Inkjet Printing of Lysozyme and Tyrosinase on Polyamide Fabric: Sustainable Enzyme Binding on Textile Surface. Advanced Materials Interfaces, 9(22), Article ID 2200723.
Open this publication in new window or tab >>Sequential Inkjet Printing of Lysozyme and Tyrosinase on Polyamide Fabric: Sustainable Enzyme Binding on Textile Surface
2022 (English)In: Advanced Materials Interfaces, ISSN 2196-7350, Vol. 9, no 22, article id 2200723Article in journal (Refereed) Published
Abstract [en]

An ink containing tyrosinase catalyzes the tyrosine residues on lysozyme protein to bind it on a plasma-treated polyamide-6,6 (PA) fabric. Inkjet printing enables controlled and sequential deposition of two enzymes on PA which is necessary for proper binding. The effect of different printing sequences on crosslinking stability and enzymatic activity is presented. The lysozyme bound on the fabric shows satisfactory antimicrobial activity. The printed fabric retains about 68% of the ink activity when tyrosinase is printed before lysozyme. Further, this fabric retains about 24% of the initial activity up to four reuses. The fabric shows acceptable inhibition of bacterial growth and retains almost half of its initial activity when cold stored for a month. This work shows the potential of protein binding on textile surface using various means of sustainable technologies, namely enzyme, inkjet, and plasma. 

Place, publisher, year, edition, pages
John Wiley & Sons, 2022
National Category
Materials Chemistry Physical Chemistry
Identifiers
urn:nbn:se:hb:diva-28241 (URN)10.1002/admi.202200723 (DOI)000819562000001 ()2-s2.0-85133156944 (Scopus ID)
Note

This work was financially supported by the research school at the University of Borås. The authors are thankful for the support from TEKO (Sveriges Textil- och Modeföretag) and Sparbanksstiftelsen Sjuhärad.

Available from: 2022-07-08 Created: 2022-07-08 Last updated: 2023-02-07Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-4369-9304

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