Preparation of gold nanoparticles by a novel biodegradable graft copolymer sodium alginate-g-poly (N,N-dimethylacrylamide-co-acrylic acid) with anti micro bacterial application

Kolya, Haradhan; Pal, Sagar; Pandey, Akhil; Tripathy, Tridib

doi:10.1016/j.eurpolymj.2015.01.035

Cited by 40 publications

(22 citation statements)

References 29 publications

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“…In recent years, metal nanoparticles were extensively used as antibacterial agents towards many pathogens Jayaramudu, Raghavendra, Varaprasad, Sadiku, Ramam, et al, 2013;Raghavendra, Jayaramudu, Varaprasad, Mohan Reddy, & Raju, 2015). Among the various metal nanoparticles, silver nanoparticles were extensively studied because of their potential anti-bacterial properties (Kolya, Pal, Pandey, & Tripathy, 2015). However, the use of silver nanoparticles for medical applications is potentially limited due to their genotoxicity towards mammalian cell and their non-specific biologicaltoxicity (Nagender Reddy, Eladia Maria, & Josef, 2009;Gardner et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

“…Natural polysaccharides are extensively used for this purpose. Sodium alginate is one such natural polysaccharide, chemically it is the sodium salt of alginic acid, an unbranched copolymer with homopolymeric blocks of ␤-1,4-linked-d mannuronic acid and ␣-1,4-linked-l-guloronic acid (Kolya et al, 2015;Varaprasad et al, 2015). Further, due to its good tissue compatibility, it has been widely used in the field of tissue engineering including regeneration of skin, cartilage, bone and liver and in the treatment of exuding wounds and in enhancing the healing process (Shalumon et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Nano zinc oxide–sodium alginate antibacterial cellulose fibres

Varaprasad

Raghavendra

Jayaramudu

et al. 2016

Carbohydrate Polymers

172

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In the present study, antibacterial cellulose fibres were successfully fabricated by a simple and cost-effective procedure by utilizing nano zinc oxide. The possible nano zinc oxide was successfully synthesized by precipitation technique and then impregnated effectively over cellulose fibres through sodium alginate matrix. XRD analysis revealed the 'rod-like' shape alignment of zinc oxide with an interplanar d-spacing of 0.246nm corresponding to the (101) planes of the hexagonal wurtzite structure. TEM analysis confirmed the nano dimension of the synthesized zinc oxide nanoparticles. The presence of nano zinc oxide over cellulose fibres was evident from the SEM-EDS experiments. FTIR and TGA studies exhibited their effective bonding interaction. The tensile stress-strain curves data indicated the feasibility of the fabricated fibres for longer duration utility without any significant damage or breakage. The antibacterial studies against Escherichia coli revealed the excellent bacterial devastation property. Further, it was observed that when all the parameters remained constant, the variation of sodium alginate concentration showed impact in devastating the E. coli. In overall, the fabricated nano zinc oxide-sodium alginate cellulose fibres can be effectively utilized as antibacterial fibres for biomedical applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nano zinc oxide–sodium alginate antibacterial cellulose fibres

Varaprasad

Raghavendra

Jayaramudu

et al. 2016

Carbohydrate Polymers

172

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“…For example, Olivier et al reported that semicrystalline poly(ε‐caprolactone) (PCL) brushes were grafted on Au surface by the polymerization of CL from hydroxyl end‐group of thiol monolayer promoted by Sn(Oct) 2 at 50 °C for ROP . Furthermore, by using potassium peroxydisulfate (K 2 S 2 O 8 ) as the initiator, Kolya et al successfully prepared graft copolymer based on sodium alginate and a mixture of N , N ‐dimethylacrylamide or acrylic acid without addition of any reducing agent in aqueous medium, which exhibited excellent antibacterial activity toward a gram negative bacteria . In short, the “graft‐from” strategy was popularly used to synthesize well‐defined polymer@AuNP hybrid nanocomposites.…”

Section: Approaches To the Synthesis Of Polymer–aunp Hybridsmentioning

confidence: 99%

Recent Progress in Macromolecule‐Anchored Hybrid Gold Nanomaterials for Biomedical Applications

Luo

et al. 2018

Macromol. Rapid Commun.

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Gold nanoparticles (AuNPs), with elegant thermal, optical, or chemical properties due to quantum size effects, may serve as unique species for therapeutic or diagnostic applications. It is worth mentioning that their small size also results in high surface activity, leading to significantly impaired stability, which greatly hinders their biomedical utilizations. To overcome this problem, various types of macromolecular materials are utilized to anchor AuNPs so as to achieve advanced synergistic effect by dispersing, protecting, and stabilizing the AuNPs in polymeric-Au hybrid self-assemblies. In this review, the most recent development of polymer-AuNP hybrid systems, including AuNPs@polymeric nanoparticles, AuNPs@polymeric micelle, AuNPs@polymeric film, and AuNPs@polymeric hydrogel are discussed with respect to their different synthetic strategies. These sophisticated materials with diverse functions, oriented toward biomedical applications, are further summarized into several active domains in the areas of drug delivery, gene delivery, photothermal therapy, antibacterials, bioimaging, etc. Finally, the possible approaches for future design of multifunctional polymer-AuNP hybrids by combining hybrid chemistry with biological interface science are proposed.

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“…Therefore, the preparation of metal nanoparticles by green technique are free from toxic hazardous chemicals and has gained much importance in several applications. Among the various nanoparticles, gold (Au) nanocomposites/nanoparticles are synthesised by green method as well as chemical method and their wide range of applications are also reported . Recently synthesis of various metal nanoparticles including Au by the use of polysaccharide based graft copolymer has gained considerable importance for various applications because of their eco‐friendly in nature and has greater potentiality to act as reducing and capping agents .…”

Section: Introductionmentioning

confidence: 98%

Simultaneous Electrochemical Sensing of p‐Aminophenol and Hydroquinone by Using Grafted Tricholoma Mushroom Polysaccharide/Gold Composite Nanoparticles in Aqueous Media

Mondal

Bhanja²,

Tripathy

2019

ChemistrySelect

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Herein, we report for the first time a novel electrochemical sensor for the simultaneous detection of para‐aminophenol (p‐AP) and hydroquinone (HQ) in aqueous medium using Tricholoma mushroom polysaccharide based graft copolymer‐Au composite nanoparticles (TMPG−Au NPs). The graft copolymer is synthesised by radical polymerization technique in aqueous medium using a mixture of acrylamide (AM), acrylic acid (AA) and Tricholoma mushroom polysaccharide (TMP). Further, TMPG−Au NPs is prepared using the graft copolymer as a reducing as well as stabilizing agent by green technique. The graft copolymer and TMPG−Au NPs are properly characterised. The detection of p‐AP and HQ in aqueous medium is carried out by linear sweep voltammetry (LSV) and Chronoamperometry (CA) without interfering other common phenolic compounds and environmentally relevant metal ions. In LSV experiment the p‐AP and HQ show clear and distinct oxidation peaks at 0.0814 V and −0.077 V respectively. The proposed sensor successfully detects p‐AP and HQ with very low detection limit 0.41 μM and 0.32 μM respectively and effectively.

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Preparation of gold nanoparticles by a novel biodegradable graft copolymer sodium alginate-g-poly (N,N-dimethylacrylamide-co-acrylic acid) with anti micro bacterial application

Cited by 40 publications

References 29 publications

Nano zinc oxide–sodium alginate antibacterial cellulose fibres

Nano zinc oxide–sodium alginate antibacterial cellulose fibres

Recent Progress in Macromolecule‐Anchored Hybrid Gold Nanomaterials for Biomedical Applications

Simultaneous Electrochemical Sensing of p‐Aminophenol and Hydroquinone by Using Grafted Tricholoma Mushroom Polysaccharide/Gold Composite Nanoparticles in Aqueous Media

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