Cellulose–polymer–Ag nanocomposite fibers for antibacterial fabrics/skin scaffolds

Raghavendra, Gownolla Malegowd; Jayaramudu, Tippabattini; Varaprasad, Kokkarachedu; Sadiku, Rotimi; Ray, Suprakas Sinha; Raju, K. Mohana

doi:10.1016/j.carbpol.2012.12.035

Cited by 134 publications

(64 citation statements)

References 27 publications

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“…Hence, the inhibition zones were observed to be larger for P(NP-AAm) 3 + Ag 0 + Au 0 than for P(CP-AAm) 3 + Ag 0 + Au 0 . 36 Furthermore, according to the standard antibacterial test "SNV 195920-1992", specimens showing more than a 1 mm zone of microbial inhibition can be considered good antibacterial agents. 43 Hence, the novel inorganic Au-core Agshell nanocomposite hydrogels developed via an eco-friendly green process can be considered good antibacterial agents, effective at killing bacteria.…”

Section: Antibacterial Activitymentioning

confidence: 99%

Antibacterial nanocomposite hydrogels for superior biomedical applications: a Facile eco-friendly approach

et al. 2015

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In this scientific paper, we report a facile and eco-friendly fabrication of antibacterial nanocomposite hydrogels of Au-core Ag-shell nanoparticles, embedded within Carbopol® 980 NF/Noveon® AA-1 polycarbophil acrylic acid polymeric matrix. The aim of the study was to investigate whether these nanocomposite hydrogels have the potential to be used for bacterial inactivation applications. The key feature was that, unlike the use of chemical reductants, auxiliary stabilizers and specialized expensive equipment, the Au-core Ag-shell nanoparticles ($15 AE 3 nm) were synthesized utilizing aqueous mint leaf extracts. The developed hydrogels were characterized by Fourier transform infrared spectroscopy, transmission electron microscopy, scanning electron microscopy/energy-dispersive spectroscopy and thermogravimetric analysis. Swelling studies were performed in phosphate buffered saline (pH 7.4) solution. A sustained antibacterial study against E. coli (GÀ) and B. subtilis (G+) showed their excellent antibacterial efficiency, which suggested that the developed hydrogels are potential candidates for a wide range of biomedical applications.

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Section: Antibacterial Activitymentioning

confidence: 99%

Antibacterial nanocomposite hydrogels for superior biomedical applications: a Facile eco-friendly approach

et al. 2015

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“…1,2 Among the noble nanoparticles, nano silver particle has gained very good prominence as antimicrobial agent and it has also been used in the clothing, food industries, sunscreens, wounds dressing, and cosmetics. [3][4][5] Furthermore, silver nanoparticles with polymers have gained popularity in an ointment, wound dressing, and other applications. 6 Therefore, nano silver particle is set to be the future generation antimicrobials agent.…”

Section: Introductionmentioning

confidence: 99%

“…20,21 Moreover, by using this process, plenty of nanomaterials can be synthesized at ambient temperature, resulting in the absence of residues and with good control of particle size. 5,22,23 procedure. 20,[24][25][26] However, according to literature, there has been limited reports for the synthesis of nano sized silver particles by this process.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of poly(ethylene glycol) stabilized nano silver particles by a mechanochemical assisted ball mill process

Jayaramudu

Raghavendra

Varaprasad

et al. 2015

J of Applied Polymer Sci

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Nano silver particles with an average mean crystallite size of between 10 and 12 nm were synthesized from different molecular weights of poly(ethylene glycol) as a stabilizing agents, through solid state oxidation of silver nitrate using a higher energy planetary ball mill. Ultraviolet-Visible spectra were used to confirm the synthesis of nano silver particles. The surface plasmon resonance bands were observed around 410 nm. Fourier transformed infrared spectrum, X-ray diffraction, and transmission electronic microscopy techniques were used to characterize the nano silver particles synthesized. Thermal stability was determined using thermogravimetic analysis and the elemental composition of the sample was determined by energy dispersive X-ray analysis. The nano silver particles synthesized, exhibited very good antibacterial activity against Gram-positive bacteria (Bacillus) and Gram-negative bacteria (Pseudomonas aeruginosa). Based on the obtained results, it was additionally explored that the size and the stabilization of the nano silver particles synthesized, strongly depend on the molecular weight of poly(ethylene glycol).

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“…(Eicchorn et al, 2010). Cellulose based polymer composites are widely studied in tissue engineering (Raghavendra et al, 2013;Zulkifli, Hussain, Rasad, & Yusoff, 2014), dialysis, ultrafiltration, per-meation, separation (Shibazaki, Kuca, Onabe, & Usuda, 1993), and purification (Anirudhan, Nima, & Divya, 2013). Polyvinyl alcohol (PVA) is the synthetic water soluble polymer with high swelling rate.…”

Section: Introductionmentioning

confidence: 99%

Surface stiffening and enhanced photoluminescence of ion implanted cellulose – polyvinyl alcohol – silica composite

Shanthini

Sakthivel

Menon

et al. 2016

Carbohydrate Polymers

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Novel Cellulose (Cel) reinforced polyvinyl alcohol (PVA)-Silica (Si) composite which has good stability and in vitro degradation was prepared by lyophilization technique and implanted using N 3+ ions of energy 24 keV in the fluences of 1 × 10 15 , 5 × 10 15 and 1 × 10 16 ions/cm 2 . SEM analysis revealed the formation of microstructures, and improved the surface roughness on ion implantation. In addition to these structural changes, the implantation significantly modified the luminescent, thermal and mechanical properties of the samples. The elastic modulus of the implanted samples has increased by about 50 times compared to the pristine which confirms that the stiffness of the sample surface has increased remarkably on ion implantation. The photoluminescence of the native cellulose has improved greatly due to defect site, dangling bonds and hydrogen passivation. Electric conductivity of the ion implanted samples was improved by about 25%. Hence, low energy ion implantation tunes the mechanical property, surface roughness and further induces the formation of nano structures. MG63 cells seeded onto the scaffolds reveals that with the increase in implantation fluence, the cell attachment, viability and proliferation have improved greatly compared to pristine. The enhancement of cell growth of about 59% was observed in the implanted samples compared to pristine. These properties will enable the scaffolds to be ideal for bone tissue engineering and imaging applications.

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Cellulose–polymer–Ag nanocomposite fibers for antibacterial fabrics/skin scaffolds

Cited by 134 publications

References 27 publications

Antibacterial nanocomposite hydrogels for superior biomedical applications: a Facile eco-friendly approach

Antibacterial nanocomposite hydrogels for superior biomedical applications: a Facile eco-friendly approach

Preparation and characterization of poly(ethylene glycol) stabilized nano silver particles by a mechanochemical assisted ball mill process

Surface stiffening and enhanced photoluminescence of ion implanted cellulose – polyvinyl alcohol – silica composite

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