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Yu, Junchun
Publications (10 of 30) Show all publications
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
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
Biswas, T., Yu, J. & Nierstrasz, V. (2021). Effective Pretreatment Routes of Polyethylene Terephthalate Fabric for Digital Inkjet Printing of Enzyme. Materials Science & Engineering: B. Solid-state Materials for Advanced Technology
Open this publication in new window or tab >>Effective Pretreatment Routes of Polyethylene Terephthalate Fabric for Digital Inkjet Printing of Enzyme
2021 (English)In: Materials Science & Engineering: B. Solid-state Materials for Advanced Technology, ISSN 0921-5107, E-ISSN 1873-4944Article in journal (Refereed) Published
Abstract [en]

Enzymes immobilized on synthetic polyethylene terephthalate (PET) textile surface by resource‐efficient inkjet printing technology can promote developments for various novel applications. Synthetic fabrics often require adequate pretreatments to facilitate such printing process. This work discusses PET–woven fabric pretreatment routes to improve wettability by alkaline, enzymatic, and plasma processes for effective printing of lysozyme using an industrial piezoelectric printhead. Results indicate that all pretreated samples contain a similar amount of enzymes upon printing. Plasma treated fabrics show relatively more hydrophilic surface characteristics, better protein binding stability, and lower retained activity. Alkali and cutinase‐treated samples possess relatively higher activity due to the greater amount of enzyme desorption to substrate solution. Depending on respective enzyme‐binding stability, a combination of a well-pretreated surface and inkjet as preferential placement technology, the approach of this study can be used as a facile enzyme immobilization method for suitable applications, for example, controlled‐release and bio‐sensing.

Keywords
biomaterials inkjet printing, lysozyme, polyethylene terephthalate (PET), pretreatment routes
National Category
Textile, Rubber and Polymeric Materials Other Biological Topics Polymer Chemistry Physical Chemistry
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-24895 (URN)10.1002/admi.202001882 (DOI)000611092100001 ()2-s2.0-85099740075 (Scopus ID)
Note

Correction to article published 23 November 2021: https://doi.org/10.1002/admi.202101935

Available from: 2021-01-28 Created: 2021-01-28 Last updated: 2023-01-11Bibliographically approved
Seipel, S., Yu, J. & Nierstrasz, V. (2020). Effect of physical parameters and temperature on the piezo-electric jetting behaviour of UV-curable photochromic inks. Scientific Reports, 10, 18841
Open this publication in new window or tab >>Effect of physical parameters and temperature on the piezo-electric jetting behaviour of UV-curable photochromic inks
2020 (English)In: Scientific Reports, E-ISSN 2045-2322, Vol. 10, p. 18841-Article in journal (Refereed) Published
Abstract [en]

Although resource-efficient processes like inkjet printing have a large potential to foster the development of smart and functional textiles, one bottleneck still is the development of functional inks. To make inkjet printing and UV curing given production techniques for smart and functional specialty products, e.g. photochromic textiles, deepened knowledge about the development, rheological behavior and jetting behavior of functional ink is needed. This paper focuses on the formulation and performance of UV-responsive and UV-curable inkjet inks, which are based on photochromic dyes and their application to produce UV-responsive textiles. Two commercial photochromic dyes—Reversacol Ruby Red (RR) and Sea Green (SG), which represent dyes of the naphthopyran and spirooxazine class, respectively, have been used to develop the inks. The photochromic inks are characterized according to their physical–chemical and rheological properties in respect to temperature. The influence of temperature on the drop formation of the inks in an industrial print head is analyzed using a high-speed camera, which reveals important information regarding challenges in ink jettability. It was found that the dye structure and type used in the ink can influence the jetting behavior of photochromic UV-curable ink. More pronounced temperature sensitivity of dyes can increase the temperature-related effects of drop formation as was observed for SG ink. The printability of the RR and SG inks is framed and underpinned by theoretical calculations of the Z number. Discrepancies are observed and discussed between existing theory of ink jettability and visual evaluation of the photochromic ink.

Place, publisher, year, edition, pages
London: Springer Nature, 2020
Keywords
Inkjet printing, UV curing, photochromic ink, jettability, drop formation
National Category
Materials Engineering Chemical Engineering Textile, Rubber and Polymeric Materials
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-24008 (URN)10.1038/s41598-020-75449-z (DOI)000589618700013 ()2-s2.0-85094872390 (Scopus ID)
Available from: 2020-11-04 Created: 2020-11-04 Last updated: 2024-02-01Bibliographically approved
Tadesse Abate, M., Seipel, S., Yu, J., Vikova, M., Vik, M., Ferri, A., . . . Nierstrasz, V. (2020). Supercritical CO2 dyeing of polyester fabric with photochromic dyes to fabricate UV sensing smart textiles. Dyes and pigments, 183
Open this publication in new window or tab >>Supercritical CO2 dyeing of polyester fabric with photochromic dyes to fabricate UV sensing smart textiles
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2020 (English)In: Dyes and pigments, ISSN 0143-7208, E-ISSN 1873-3743, Vol. 183Article in journal (Refereed) Published
Abstract [en]

Photochromic molecules are well-established colourants in the manufacturing of niche products, providing reversible colour change effects when irradiated with ultraviolet (UV) light. The high material cost of such speciality dyes along with the general high carbon footprint and extensive water consumption of textile products necessitates resource-efficient production processes. The use of supercritical CO2 (scCO(2)) dyeing technique enables the economic production of textile high-end products, where a uniform through colouration is desired. This study investigates the potential application of two commercial photochromic dyes based on spirooxazine (Sea Green - SO-SG) and naphthopyran (Ruby Red - NP-RR) to polyester fabric using scCO(2) dyeing technique and examines their photochromic behaviour. The dyeing was carried out at 120 degrees C and 25 MPa for 1 h. The photochromic performance was evaluated using a specially designed online colour measurement system capable of simultaneous UV irradiation and continuous measurement of photochromic colour change even after the shutdown of the UV source. The colour yields (K/S values), photoswitching rates and durability against washing were the main parameters examined. The results showed that scCO(2) dyed photochromic polyester fabrics exhibited reversible colour changing properties upon UV exposure and removal. The samples dyed with SO-SG demonstrated a comparable degree of photo-colouration, lower background colour, faster colouration and decolouration speeds, but inferior wash fastness compared with NP-RR dyed samples. Particularly, the same class of dyes applied by scCO(2) dyeing showed faster fading rates compared with conventionally dyed and screen printed samples. This study shows that scCO(2) dyeing method is a potential alternative to develop uniformly coloured photochromic textiles providing excellent photochromic performance with additional economic and environmental benefits.

Place, publisher, year, edition, pages
Elsevier, 2020
Keywords
Supercritical carbon dioxide (scCO(2)) dyeing, Polyester, Photochromic dye, Spirooxazine, Naphthopyran
National Category
Materials Engineering
Identifiers
urn:nbn:se:hb:diva-24796 (URN)10.1016/j.dyepig.2020.108671 (DOI)000569771600002 ()2-s2.0-85089103809 (Scopus ID)
Available from: 2021-01-25 Created: 2021-01-25 Last updated: 2022-01-20Bibliographically approved
Seipel, S., Yu, J., Viková, M., Vik, M., Koldinská, M., Havelka, A. & Nierstrasz, V. (2019). Color performance, durability and handle of inkjet-printed and UV-cured photochromic textiles for multi-colored applications. Fibers And Polymers, 20
Open this publication in new window or tab >>Color performance, durability and handle of inkjet-printed and UV-cured photochromic textiles for multi-colored applications
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2019 (English)In: Fibers And Polymers, ISSN 1229-9197, E-ISSN 1875-0052, Vol. 20Article in journal (Refereed) Published
Abstract [en]

The development and design of novel functional and smart textile materials such as textile sensors and multicolored systems based on photochromic dyes necessitate controls of color intensities, switching speeds, and material durability. Precise control and synchronization of dye kinetics are important for multi-colored photochromic applications especially. However, durability towards abrasion and washing should not be compromised on if we aim to design reliable future textile products. In this study, two different commercial photochromic dyes — a naphthopyran and a spirooxazine-based dye — have been applied on PET fabric by inkjet printing and UV-LED curing. The photochromic textiles’ color behavior, fastness to abrasion and washing, and handle are evaluated using spectrophotometry, scanning electron microscopy, and Kawabata evaluation system. Despite a decrease in color performance after washing, the photochromic inkjet print is effective and barely influences the textile structure. Reduced rigidity of the host matrix promoted higher color yields and faster dye kinetics, but also improved durability towards abrasion and washing. In order to synchronize kinetics of the different dye types for multi-colored applications, distinct curing conditions are preferable, which, however, result in varying print durability. In the design of multi-colored photochromic textiles, dye kinetics, and durability have to be balanced.

Keywords
Inkjet printing, UV curing, textile sensor, photochromic, durability
National Category
Engineering and Technology
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-21901 (URN)10.1007/s12221-019-1039-6 (DOI)000476535100014 ()2-s2.0-85069496188 (Scopus ID)
Available from: 2019-10-29 Created: 2019-10-29 Last updated: 2021-10-20Bibliographically approved
Biswas, T., Yu, J. & Nierstrasz, V. (2019). Effects of ink characteristics and piezo-electric inkjetting parameters on lysozyme activity. Scientific Reports, 9(18252)
Open this publication in new window or tab >>Effects of ink characteristics and piezo-electric inkjetting parameters on lysozyme activity
2019 (English)In: Scientific Reports, E-ISSN 2045-2322, Vol. 9, no 18252Article in journal (Refereed) Published
Abstract [en]

Inkjet printing of enzymes can facilitate many novel applications where a small amount of materials need to be deposited in a precise and flexible manner. However, maintaining the satisfactory activity of inkjet printed enzyme is a challenging task due to the requirements of ink rheology and printhead parameters. Thus to find optimum inkjetting conditions we studied the effects of several ink formulation and jetting parameters on lysozyme activity using a piezoelectric printhead. Within linear activity range of protein concentrations ink containing 50 µg/mL lysozyme showed a satisfactory activity retention of 85%. An acceptable activity of jetted ink was found at pH 6.2 and ionic strength of 0.06 molar. Glycerol was found to be an effective viscosity modifier (10–15 mPa.s), humectant and protein structure stabilizer for the prepared ink. A non-ionic surfactant when used just below critical micelle concentration was found to be favourable for the jetted inks. An increase in activity retention was observed for inks jetted after 24 hours of room temperature incubation. However, no additional activity was seen for inkjetting above the room temperature. Findings of this study would be useful for formulating other protein-based inks and setting their inkjet printing parameters without highly compromising the functionality.

Keywords
biological ink, lysozyme, inkjet printing, piezoelectric
National Category
Textile, Rubber and Polymeric Materials
Research subject
Textiles and Fashion (General)
Identifiers
urn:nbn:se:hb:diva-22771 (URN)10.1038/s41598-019-54723-9 (DOI)000501310300001 ()2-s2.0-85075948827 (Scopus ID)
Available from: 2020-02-03 Created: 2020-02-03 Last updated: 2023-01-11Bibliographically approved
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