ABSTRACT
This study focuses on the development of a high-performance composite using a novel technique incorporating nanocellulose extracted from water hyacinth. The extraction procedure of nanocellulose from water hyacinth stems involves acid hydrolysis and sonication, followed by its incorporation into jute, glass, and cotton fabric through the dip coating method. The crystallinity index of the nanocellulose was determined to be 40.72% using X-ray diffraction (XRD) analysis. Additionally, the functional groups of the extracted nanocellulose were identified through FT-IR analysis, while scanning electron microscopy (SEM) demonstrated morphological changes after nanocellulose coating. Our synthesized water hyacinth nanocellulose exhibited compliance with previously studied results in FT-IR analysis. Both tensile and flexural strength tests revealed that the nanocellulose coating significantly improved the strength of the jute, cotton, and glass fabric-reinforced composites compared to their raw counterparts. Specifically, the jute nanocomposite exhibited a 24.61% increase in strength, the cotton woven nanocomposite showed a 19.39% enhancement, and the glass nanocomposite displayed 8.47% increment in strength. Similarly, the flexural stress of jute and cotton fabric nanocomposites showed a notable 11% and 8.9% increase, surpassing the 3.59% rise observed in glass nanocomposites. Overall, this research successfully completed all tests and achieved superior findings compared to earlier studies.
ABSTRACT
The main thrust of this project is the fabrication of silver nanoparticles (AgNPs) from electronic waste (PCB board) and applying it on 100% cotton fabric as an antimicrobial agent. The nanoparticle formation of silver was done by green synthesis way using an aqueous leaf extract of Eichhornia crassipes. Furthermore, chitosan was also applied to the fabric with silver nanoparticles by coating. FTIR and SEM tests characterized the fabricated silver nanoparticles, and antimicrobial tests were followed by the disc diffusion method. The SEM analysis showed an average particle size of 76.91 nm. The FTIR analysis showed the successful reduction of silver nanoparticles and the bonding with chitosan and cellulose. Besides, the EDX reports confirmed the existence of AgNPs by indicating a strong signal in the silver region. In addition, SEM characteristics analysis confirmed the uniform deposition of silver nanoparticles. Finally, the antimicrobial property was tested against gram-positive (Staphylococcus aureus) and gram-negative (Escherichia coli) bacteria. The antimicrobial result was found satisfactory in the case of green-synthesized recycled AgNPs. However, the effectiveness was not observed to be higher than green-synthesized pure AgNPs. In this study, the zone of inhibition of AgNPs was also compared to the reference antibiotics Ciprofloxacin.
Subject(s)
Chitosan , Electronic Waste , Metal Nanoparticles , Nanocomposites , Silver , Textiles , Escherichia coliABSTRACT
Betel-nut leaf plate fiber (BLPF) is a lingo-cellulosic natural fiber that can be used to make eco-friendly and biodegradable blended or hybrid fabric with Banana fiber. In the world of organic textiles, naturally dyed BLPF-Banana fiber can be used for wearable products and satisfy health and hygiene issues. BLPF and Banana fiber can be good natural fibers for hybrid fabrics despite being considered waste materials. In this research work, both of the fibers were pretreated carefully to get the desired fineness, color, flexibilities, etc., which are necessary to manufacture fabric. BLPF-Banana woven (1 × 1) hybrid fabric was developed where 12 Ne Banana yarns were used in the warp direction, and 20 Ne BLPF yarns were used in the weft direction and it was dyed naturally with Turmeric. Evaluations of different physico-mechanical properties; tensile strength (854.9 N), tearing strength (14.5 N), stiffness (3.1 N), crease recovery (75° angle), and fabric thickness (1.33 mm) of naturally dyed BLPF-Banana blended fabric were tested, and found satisfactory. SEM, FTIR, and Water vapor transmission tests were also conducted in this study. It attempted to turn the wastages into an asset to make a unique biodegradable BLPF-Banana hybrid fabric by blending two types of natural fibers with the help of natural dyeing substance; it could be a god replacement for synthetic blended fabric.
ABSTRACT
This article aims to study the thermo-regulating properties of infiltrated Phase change material (PCM) micro-particles treated on polyester fabric. The melt infiltration method was implemented for the synthesis of the Silica aero-gel/Eicosane particles by dispersing eicosane in silica aero-gel. Synthesized particles were incorporated into the polyester knitted fabric by both exhaustion dyeing and coating method to impart the thermoregulation characteristics. The crystalline structure and the particle size of aero-gel infiltrated PCM particles were measured by X-ray diffraction (XRD) analyzer. The presence of eicosane particles deposited on the fabric surface was confirmed by the Fourier Transform Infrared Spectroscopy (FT-IR) and Scanning Electron Microscope (SEM). Finally, while the sample was subjected to heating, both the dyed and coated fabric showed resistance against the rise of temperature due to the presence of phase transition PCM micro-particles compared to the untreated raw fabric sample.
