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Mehmood S, Akhtar N, Arshad M, Azhar U, Ullah S, Waris TS, Jabbar F, Hasan A, Iqbal F, Chaudhry AA, Rehman IU, Yar M. A novel methodology for stabilization of silver nanoparticles on cotton, nylon and cotton/nylon fabrics using chitosan and triethyl orthoformate for enhanced and elongated antibacterial performance. Int J Biol Macromol 2024; 267:129256. [PMID: 38493823 DOI: 10.1016/j.ijbiomac.2024.129256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Accepted: 01/03/2024] [Indexed: 03/19/2024]
Abstract
In the present study, the commercially available three different fabrics cotton, nylon and cotton/nylon were modified by chitosan and silver nanoparticles using a crosslinker triethyl orthoformate (TEOF). Resulted cotton‑silver (Ag-Cs-Cot), nylon‑silver (Ag-Cs-Nyl) and cotton-nylon silver (Ag-Cs-Cot-Nyl) fabrics showed significant anti-bacterial activity even after 50 washing cycles. Silver nanoparticles were prepared by reducing silver nitrate through sodium borohydride at 0 °C. In FTIR spectra the peak at near 1650 cm-1 confirmed that TEOF mediated attachment of chitosan with fabrics (due to C=N) and the stretching of secondary amine near the 3375 cm-1 indicated the silver attachment to the amine group of the chitosan. In Scanning Electron Microscope (SEM) images smooth surfaces of fabrics without any damage by modification process were observed. The antibacterial activity was Analyzed by agar diffusion and broth dilution assays against Escherichia coli and Staphylococcus aureus bacterial strains and results showed 90% bacterial inhibition against E. coli and 89% bacterial inhibition against S. aureus. For testing the antibacterial durability, the modified fabrics were washed with non-ionic detergent (10g/l) for 15 minutes under aggressive stirring (100 rpm) at room temperature. The modified fabrics retained antibacterial activity over the 50 washing cycles. Finally, the commercial potential of cotton-silver fabric was evaluated by stitching it with the socks of football players and interestingly results showed that the modified fabric on the socks showed more than 90% bacterial inhibition as compared to the plain fabric after 70 minutes of playing activity.
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Affiliation(s)
- Sadia Mehmood
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, 54000, Pakistan
| | - Naeem Akhtar
- Institute of Chemical Sciences, Bahauddin Zakariya University (BZU), Multan 60800, Pakistan
| | - Muhammad Arshad
- Institute of Chemistry, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Usaid Azhar
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, 54000, Pakistan
| | - Saleem Ullah
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, 54000, Pakistan
| | - Tayyba Sher Waris
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, 54000, Pakistan
| | - Faiza Jabbar
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, 54000, Pakistan
| | - Anwarul Hasan
- Department of Mechanical and Industrial Engineering, College of Engineering, Qatar University, Doha 2713, Qatar; Biomedical Research Center, Qatar University, Doha 2713, Qatar
| | - Farasat Iqbal
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, 54000, Pakistan
| | - Aqif Anwar Chaudhry
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, 54000, Pakistan
| | - Ihtesham Ur Rehman
- School of Medicine, University of Central Lancashire, Preston, Lancashire PR1 2HE, United Kingdom of Great Britain and Northern Ireleand
| | - Muhammad Yar
- Interdisciplinary Research Center in Biomedical Materials, COMSATS University Islamabad, Lahore Campus, 54000, Pakistan.
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Amitrano F, Coccia A, Pagano G, Biancardi A, Tombolini G, Marsico V, D’Addio G. Measuring Surface Electromyography with Textile Electrodes in a Smart Leg Sleeve. SENSORS (BASEL, SWITZERLAND) 2024; 24:2763. [PMID: 38732868 PMCID: PMC11086330 DOI: 10.3390/s24092763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 04/23/2024] [Accepted: 04/23/2024] [Indexed: 05/13/2024]
Abstract
This paper presents the design, development, and validation of a novel e-textile leg sleeve for non-invasive Surface Electromyography (sEMG) monitoring. This wearable device incorporates e-textile sensors for sEMG signal acquisition from the lower limb muscles, specifically the anterior tibialis and lateral gastrocnemius. Validation was conducted by performing a comparative study with eleven healthy volunteers to evaluate the performance of the e-textile sleeve in acquiring sEMG signals compared to traditional Ag/AgCl electrodes. The results demonstrated strong agreement between the e-textile and conventional methods in measuring descriptive metrics of the signals, including area, power, mean, and root mean square. The paired data t-test did not reveal any statistically significant differences, and the Bland-Altman analysis indicated negligible bias between the measures recorded using the two methods. In addition, this study evaluated the wearability and comfort of the e-textile sleeve using the Comfort Rating Scale (CRS). Overall, the scores confirmed that the proposed device is highly wearable and comfortable, highlighting its suitability for everyday use in patient care.
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Affiliation(s)
- Federica Amitrano
- Bioengineering Unit, Telese Terme Institute, Istituti Clinici Scientifici Maugeri IRCCS, 82037 Telese Terme, Italy; (F.A.); (G.D.)
| | - Armando Coccia
- Bioengineering Unit, Telese Terme Institute, Istituti Clinici Scientifici Maugeri IRCCS, 82037 Telese Terme, Italy; (F.A.); (G.D.)
| | - Gaetano Pagano
- Bioengineering Unit, Bari Institute, Istituti Clinici Scientifici Maugeri IRCCS, 70124 Bari, Italy;
| | - Arcangelo Biancardi
- Bioengineering Unit, Telese Terme Institute, Istituti Clinici Scientifici Maugeri IRCCS, 82037 Telese Terme, Italy; (F.A.); (G.D.)
| | | | - Vito Marsico
- Orthopaedics Unit, Bari Institute, Istituti Clinici Scientifici Maugeri IRCCS, 70124 Bari, Italy;
| | - Giovanni D’Addio
- Bioengineering Unit, Telese Terme Institute, Istituti Clinici Scientifici Maugeri IRCCS, 82037 Telese Terme, Italy; (F.A.); (G.D.)
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Coccia A, Capodaglio EM, Amitrano F, Gabba V, Panigazzi M, Pagano G, D'Addio G. Biomechanical Effects of Using a Passive Exoskeleton for the Upper Limb in Industrial Manufacturing Activities: A Pilot Study. SENSORS (BASEL, SWITZERLAND) 2024; 24:1445. [PMID: 38474980 DOI: 10.3390/s24051445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 02/16/2024] [Accepted: 02/21/2024] [Indexed: 03/14/2024]
Abstract
This study investigates the biomechanical impact of a passive Arm-Support Exoskeleton (ASE) on workers in wool textile processing. Eight workers, equipped with surface electrodes for electromyography (EMG) recording, performed three industrial tasks, with and without the exoskeleton. All tasks were performed in an upright stance involving repetitive upper limbs actions and overhead work, each presenting different physical demands in terms of cycle duration, load handling and percentage of cycle time with shoulder flexion over 80°. The use of ASE consistently lowered muscle activity in the anterior and medial deltoid compared to the free condition (reduction in signal Root Mean Square (RMS) -21.6% and -13.6%, respectively), while no difference was found for the Erector Spinae Longissimus (ESL) muscle. All workers reported complete satisfaction with the ASE effectiveness as rated on Quebec User Evaluation of Satisfaction with Assistive Technology (QUEST), and 62% of the subjects rated the usability score as very high (>80 System Usability Scale (SUS)). The reduction in shoulder flexor muscle activity during the performance of industrial tasks is not correlated to the level of ergonomic risk involved. This preliminary study affirms the potential adoption of ASE as support for repetitive activities in wool textile processing, emphasizing its efficacy in reducing shoulder muscle activity. Positive worker acceptance and intention to use ASE supports its broader adoption as a preventive tool in the occupational sector.
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Affiliation(s)
- Armando Coccia
- Bioengineering Unit of Telese Terme Institute, Istituti Clinici Scientifici Maugeri IRCCS, 82037 Telese Terme, BN, Italy
| | - Edda Maria Capodaglio
- Occupational Therapy and Ergonomics Unit of Pavia Institute, Istituti Clinici Scientifici Maugeri IRCCS, 27100 Pavia, PV, Italy
| | - Federica Amitrano
- Bioengineering Unit of Telese Terme Institute, Istituti Clinici Scientifici Maugeri IRCCS, 82037 Telese Terme, BN, Italy
| | - Vittorio Gabba
- Department of Clinical-Surgical, Diagnostic and Pediatrics, University of Pavia, 27100 Pavia, PV, Italy
| | - Monica Panigazzi
- Occupational Therapy and Ergonomics Unit of Montescano Institute, Istituti Clinici Scientifici Maugeri IRCCS, 27040 Montescano, PV, Italy
| | - Gaetano Pagano
- Bioengineering Unit of Bari Institute, Istituti Clinici Scientifici Maugeri IRCCS, 70124 Bari, BA, Italy
| | - Giovanni D'Addio
- Bioengineering Unit of Telese Terme Institute, Istituti Clinici Scientifici Maugeri IRCCS, 82037 Telese Terme, BN, Italy
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Al-Qahtani AM, Ali S, Khan A, Bermak A. Performance Optimization of Wearable Printed Human Body Temperature Sensor Based on Silver Interdigitated Electrode and Carbon-Sensing Film. SENSORS (BASEL, SWITZERLAND) 2023; 23:1869. [PMID: 36850466 PMCID: PMC9964601 DOI: 10.3390/s23041869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 01/22/2023] [Accepted: 02/01/2023] [Indexed: 06/18/2023]
Abstract
The human body's temperature is one of the most important vital markers due to its ability to detect various diseases early. Accurate measurement of this parameter has received considerable interest in the healthcare sector. We present a novel study on the optimization of a temperature sensor based on silver interdigitated electrodes (IDEs) and carbon-sensing film. The sensor was developed on a flexible Kapton thin film first by inkjet printing the silver IDEs, followed by screen printing a sensing film made of carbon black. The IDE finger spacing and width of the carbon film were both optimized, which considerably improved the sensor's sensitivity throughout a wide temperature range that fully covers the temperature of human skin. The optimized sensor demonstrated an acceptable temperature coefficient of resistance (TCR) of 3.93 × 10-3 °C-1 for temperature sensing between 25 °C and 50 °C. The proposed sensor was tested on the human body to measure the temperature of various body parts, such as the forehead, neck, and palm. The sensor showed a consistent and reproducible temperature reading with a quick response and recovery time, exhibiting adequate capability to sense skin temperatures. This wearable sensor has the potential to be employed in a variety of applications, such as soft robotics, epidermal electronics, and soft human-machine interfaces.
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Affiliation(s)
- Aisha M. Al-Qahtani
- Division of Information and Computing Technology, College of Science and Engineering, Hamad Bin Khalifa University, Qatar Foundation, Doha 5825, Qatar
| | - Shawkat Ali
- Division of Information and Computing Technology, College of Science and Engineering, Hamad Bin Khalifa University, Qatar Foundation, Doha 5825, Qatar
- Sensors Lab, Advanced Membranes and Porous Materials Center, Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Arshad Khan
- Division of Information and Computing Technology, College of Science and Engineering, Hamad Bin Khalifa University, Qatar Foundation, Doha 5825, Qatar
| | - Amine Bermak
- Division of Information and Computing Technology, College of Science and Engineering, Hamad Bin Khalifa University, Qatar Foundation, Doha 5825, Qatar
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Zamora-Mendoza L, Guamba E, Miño K, Romero MP, Levoyer A, Alvarez-Barreto JF, Machado A, Alexis F. Antimicrobial Properties of Plant Fibers. Molecules 2022; 27:7999. [PMID: 36432099 PMCID: PMC9699224 DOI: 10.3390/molecules27227999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/09/2022] [Accepted: 11/12/2022] [Indexed: 11/19/2022] Open
Abstract
Healthcare-associated infections (HAI), or nosocomial infections, are a global health and economic problem in developed and developing countries, particularly for immunocompromised patients in their intensive care units (ICUs) and surgical site hospital areas. Recurrent pathogens in HAIs prevail over antibiotic-resistant bacteria, such as methicillin-resistant Staphylococcus aureus (MRSA) and Pseudomonas aeruginosa. For this reason, natural antibacterial mechanisms are a viable alternative for HAI treatment. Natural fibers can inhibit bacterial growth, which can be considered a great advantage in these applications. Moreover, these fibers have been reported to be biocompatible and biodegradable, essential features for biomedical materials to avoid complications due to infections and significant immune responses. Consequently, tissue engineering, medical textiles, orthopedics, and dental implants, as well as cosmetics, are fields currently expanding the use of plant fibers. In this review, we will discuss the source of natural fibers with antimicrobial properties, antimicrobial mechanisms, and their biomedical applications.
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Affiliation(s)
- Lizbeth Zamora-Mendoza
- School of Biological Sciences & Engineering, Yachay Tech University, Urcuquí 100119, Ecuador
| | - Esteban Guamba
- School of Biological Sciences & Engineering, Yachay Tech University, Urcuquí 100119, Ecuador
| | - Karla Miño
- School of Biological Sciences & Engineering, Yachay Tech University, Urcuquí 100119, Ecuador
| | - Maria Paula Romero
- School of Biological Sciences & Engineering, Yachay Tech University, Urcuquí 100119, Ecuador
| | - Anghy Levoyer
- Colegio de Ciencias e Ingenierías, Universidad San Francisco de Quito (USFQ), Departamento de Ingeniería Química, Quito 170901, Ecuador
| | - José F. Alvarez-Barreto
- Colegio de Ciencias e Ingenierías, Universidad San Francisco de Quito (USFQ), Departamento de Ingeniería Química, Quito 170901, Ecuador
| | - António Machado
- Colegio de Ciencias Biológicas y Ambientales COCIBA, Instituto de Microbiología, Universidad San Francisco de Quito (USFQ), Laboratorio de Bacteriología, Quito 170901, Ecuador
| | - Frank Alexis
- Colegio de Ciencias e Ingenierías, Universidad San Francisco de Quito (USFQ), Departamento de Ingeniería Química, Quito 170901, Ecuador
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