Abstract:Permanent deposition of silver nanoparticles (AgNPs) on the surface of textile fibre is essential for the long-term medical application of antibacterial textile products. This study aims to propose a new green method of using the pure leaf extract of Muntingia calabura and to create a permanent deposition of AgNPs on the fabric surfaces of cotton, polyester and nylon. The appearance of darker colour confirms the deposition of AgNPs on the fabric fibres. The capacity of water absorption decreased by 9.3, 12.0 a… Show more
“…In addition, both nano- and micro-Bi 2 O 3 showed better deposition on the polyester fabric than cotton fabric. This could be because polyester, which contains the ester functional group in its main chain, can interact well with Bi 2 O 3 …”
Section: Resultsmentioning
confidence: 91%
“…These findings are consistent with the FTIR results, suggesting that Bi 2 O 3 and the polyester fabric surface have substantial physical interactions. The results are in good accordance with those reported by Syafiuddin et al, who claimed that the deposition of silver nanoparticles (AgNPs) on polyester fiber showed less particle agglomeration than those that appeared on the surface of cotton fiber due to the soft and fluffy staple fiber of cotton, which has higher flexibility and can agglomerate the AgNPs more effectively. Besides, the more uniform distribution of AgNPs observed on the polyester fabric surface could be due to better interaction between the AgNPs and the polyester fiber.…”
Section: Resultsmentioning
confidence: 98%
“…This could be because polyester, which contains the ester functional group in its main chain, can interact well with Bi 2 O 3 . 10 …”
This research focuses on the development of environmentally
friendly
textile-based shielding composites, from micro-sized and nanosized
Bi
2
O
3
particles, against ionizing radiation.
Polyester fabric dyne-coated with either micro- or nano-Bi
2
O
3
particles shields some X-rays but the effectiveness
is poor. With only ∼58% uptake of micro-sized Bi
2
O
3
particles dyeing on polyester fabric, the insufficient
amount of Bi
2
O
3
leaded to the low density of
particles, resulting in only 30% of X-ray shielding at 80 kVp. Cotton
fabric coated with either micro- or nano-Bi
2
O
3
/poly(vinyl alcohol) (PVA) composites, on the other hand, demonstrated
the capacity to attenuate X-ray generated by high diagnostic X-ray
tube voltages of 70–100 kVp, in compliance with medical protection
requirements. The X-ray attenuation performance of cotton fabric coated
with either micro-Bi
2
O
3
/PVA or nano-Bi
2
O
3
/PVA nanocomposite decreased progressively with increasing
tube acceleration voltages, however their ionizing radiation-shielding
performance enhanced with the number of fabric layers. Interestingly,
for all X-ray tube voltages evaluated, the micro-Bi
2
O
3
/PVA composite outperformed the nano- Bi
2
O
3
/PVA composite in terms of X-ray shielding. At a weight ratio
of 66.7% Bi
2
O
3
, 10 layers of cotton fabric coated
with micro- Bi
2
O
3
/PVA composite can attenuate
90, 85, and 80% of X-ray photons at 70, 80, and 100 kVp, respectively.
As a result, these less harmful X-ray shielding materials have the
potential to replace lead-based composites, which are highly toxic
to human health and have negative environmental consequences.
“…In addition, both nano- and micro-Bi 2 O 3 showed better deposition on the polyester fabric than cotton fabric. This could be because polyester, which contains the ester functional group in its main chain, can interact well with Bi 2 O 3 …”
Section: Resultsmentioning
confidence: 91%
“…These findings are consistent with the FTIR results, suggesting that Bi 2 O 3 and the polyester fabric surface have substantial physical interactions. The results are in good accordance with those reported by Syafiuddin et al, who claimed that the deposition of silver nanoparticles (AgNPs) on polyester fiber showed less particle agglomeration than those that appeared on the surface of cotton fiber due to the soft and fluffy staple fiber of cotton, which has higher flexibility and can agglomerate the AgNPs more effectively. Besides, the more uniform distribution of AgNPs observed on the polyester fabric surface could be due to better interaction between the AgNPs and the polyester fiber.…”
Section: Resultsmentioning
confidence: 98%
“…This could be because polyester, which contains the ester functional group in its main chain, can interact well with Bi 2 O 3 . 10 …”
This research focuses on the development of environmentally
friendly
textile-based shielding composites, from micro-sized and nanosized
Bi
2
O
3
particles, against ionizing radiation.
Polyester fabric dyne-coated with either micro- or nano-Bi
2
O
3
particles shields some X-rays but the effectiveness
is poor. With only ∼58% uptake of micro-sized Bi
2
O
3
particles dyeing on polyester fabric, the insufficient
amount of Bi
2
O
3
leaded to the low density of
particles, resulting in only 30% of X-ray shielding at 80 kVp. Cotton
fabric coated with either micro- or nano-Bi
2
O
3
/poly(vinyl alcohol) (PVA) composites, on the other hand, demonstrated
the capacity to attenuate X-ray generated by high diagnostic X-ray
tube voltages of 70–100 kVp, in compliance with medical protection
requirements. The X-ray attenuation performance of cotton fabric coated
with either micro-Bi
2
O
3
/PVA or nano-Bi
2
O
3
/PVA nanocomposite decreased progressively with increasing
tube acceleration voltages, however their ionizing radiation-shielding
performance enhanced with the number of fabric layers. Interestingly,
for all X-ray tube voltages evaluated, the micro-Bi
2
O
3
/PVA composite outperformed the nano- Bi
2
O
3
/PVA composite in terms of X-ray shielding. At a weight ratio
of 66.7% Bi
2
O
3
, 10 layers of cotton fabric coated
with micro- Bi
2
O
3
/PVA composite can attenuate
90, 85, and 80% of X-ray photons at 70, 80, and 100 kVp, respectively.
As a result, these less harmful X-ray shielding materials have the
potential to replace lead-based composites, which are highly toxic
to human health and have negative environmental consequences.
“…The samples were weighed before and after immersion, and then the water absorption was calculated using Equation (1). where W is the water absorption of the samples in (%), m a is the sample mass (mg) after water absorption, and m o is the initial mass of the samples before water absorption [ 25 ].…”
The oldest preservation techniques used are drying techniques, which are employed to remove moisture and prevent microorganisms’ growths, prolonging a material’s shelf life. This study evaluates the effects of drying methods on carboxymethyl cellulose (CMC) + citric acid (CA) coating layers on cotton threads. For this reason, cotton threads were washed and then coated with different layers of CMC cross-linked with CA, followed by drying using an oven (OD), infrared (IR), and a combination of oven + IR (OIR) drying methods at 65 °C. Our investigations revealed that CMC + CA yields a pliable biopolymer. The differences in drying regimes and coating layers of CMC + CA have a significant effect on the coated cotton thread strength and absorption capability. The study concluded that the IR drying regime is more effective to dry a single-layered cotton thread with a single layer of CMC + CA coating to enhance desirable properties for wound dressing modification.
“…The inhibitory effect of nylon, cotton, and polyester fabrics is superior to that of Chromobacterium haemolyticum and then superior to that of Bacillus cereus as compared to the Escherichia coli . 93 Figure 22.SEM micrographs of untreated cotton fabric and fabric treated with Ag nanoparticles. 93 …”
During current COVID-19 crises, the antimicrobial textiles primarily those utilized in hospital by doctors and paramedical staff have become increasingly important. Thus, there is an unmet requirement to develop antimicrobial textiles for infection control and hygiene practices. Metallic nanoparticles exhibit great effectiveness towards resistant microbial species making them a potential solution to the increasing antibiotic resistance. Due to this, nanoparticles particularly copper and silver have become most prevalent forms of antibacterial finishing agents for the development of antimicrobial textiles. This review is mainly focused on the significance of copper and silver nanoparticles for the development of antimicrobial textiles. The comparative analysis of the antibacterial effectiveness of copper and silver nanoparticles as well as the possible physical and chemical interactions responsible for their antibacterial action are explained. The negative impact of pathogenic microbes on textiles and possible interactions of antimicrobial agents with microbes have also been highlighted. The significance of nanotechnology for the development of antimicrobial textiles and their applications in medical textiles domain have also been discussed. Various green synthesis and chemical methods used for the synthesis of Ag and Cu nanoparticles and their application on textile substrates to impart antimicrobial functionality have also been discussed. The various qualitative and quantitative standard testing protocols utilised for the antimicrobial characterization of textiles have also discussed in this review. The developed Cu and Ag coated textiles could be effectively applied in the field of hospital textiles for the preparation of antibacterial scrub suits, surgical gowns, panel covers, protective clothing, bedding textiles, coveralls, wound dressings, table covers, curtains, and chair covers etc.
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