Development of semi-interpenetrating carbohydrate polymeric hydrogels embedded silver nanoparticles and its facile studies on E. coli

Babu, V. Ramesh; Kim, Chang‐Dae; Kim, Sangsu; Ahn, Chuljin; Lee, Yong‐Ill

doi:10.1016/j.carbpol.2010.02.050

Cited by 53 publications

(25 citation statements)

References 41 publications

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“…When semi‐IPN hydrogels were equilibrated in AgNO 3 aqueous solutions, most of the Ag + were exchanged from solution into networks by the complexation with NH 2 , OH, or CONH groups of polymer chains. The reduction of various complexes with Ag + leads to the formation of Ag atoms, which is followed by agglomeration into oligomeric clusters 25. The clusters eventually resulted in the formation of colloidal Ag nanoparticles.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and properties of silver nanoparticles in chitosan‐based thermosensitive semi‐interpenetrating hydrogels

Wen

Zhang

et al. 2012

J of Applied Polymer Sci

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In this article, thermosensitive poly(N‐isopropyl acrylamide‐co‐vinyl pyrrolidone)/chitosan [P(NIPAM‐co‐NVP)/CS] semi‐interpenetrating (semi‐IPN) hydrogels were prepared by redox‐polymerization using N,N‐methylenebisacrylamide as crosslinker and ammonium persulfate/N,N,N′,N′‐tetramethylethylenediamine as initiator. Highly stable and uniformly distributed Ag nanoparticles were prepared by using the semihydrogel networks as templates via in situ reduction of silver nitrate in the presence of sodium borohydride as a reducing agent. Introduction of CS improves the hydrogels swelling ratio (SR) and stabilizes the formed Ag nanoparticles in networks. Scanning electron microscopy and transmission electron microscopy revealed that Ag nanoparticles were well dispersed with diameters of 10 nm. The semi‐IPN hydrogel/Ag composites had higher SR and thermal stability than its corresponding semi‐IPN hydrogels. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

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Section: Resultsmentioning

confidence: 99%

Synthesis and properties of silver nanoparticles in chitosan‐based thermosensitive semi‐interpenetrating hydrogels

Wen

Zhang

et al. 2012

J of Applied Polymer Sci

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“…In recent years, the term metal nanoparticles has arisen and metal nanoparticles have attracted great attention due to their large surface area to volume ratio as well as their unique optical, electronic, and catalytic properties, which make them find applications in many different fields [1,2]. Metal nanoparticles are mainly utilized in many applications such as water purification, catalysis of chemical reactions, and hydrogen storage.…”

Section: Introductionmentioning

confidence: 99%

A fast green synthesis of Ag nanoparticles in carboxymethyl cellulose (CMC) through UV irradiation technique for antibacterial applications

Basuny

Othman

El-Gawad³

et al. 2015

J Sol-Gel Sci Technol

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Silver nanoparticles embedded in a carboxymethyl cellulose matrix (AgNPs/CMC) were synthesized by a UV irradiation technique. The successful formation of AgNPs/CMC was examined using UV-Vis spectroscopy, XPS, XRD, TEM, and FTIR. The factors in the preparation process that affected the final products were extensively studied. Thus, 5.0 mM AgNO 3 , 0.5 g l -1 CMC, and exposure to UV light for 2.5 min provide excellent combinations to accomplish the AgNPs/CMC formation. Measurements of optical spectra showed that the surface plasmon resonance was localized around 426 nm when the reaction mixture exposed to UV light for 0.5 min; that is monotonically blue shifted to 403 nm up to 2.5 min exposure time. This is manifested in a quick reduction of Ag ? into smaller Ag nanoparticles. The IR analysis indicated that hydroxyl and carboxylate groups in CMC were included in coordination with the Ag ? ions through displacement of one proton. Upon absorbing UV light, the cellulose hydroxyl and carboxymethylic groups get excited, which reduce Ag ? ions to Ag nanoparticles. The TEM image for the optimal designed AgNPs/CMC sample confirmed that AgNPs are formed with many individual spherical shapes and an average diameter of 15.5 nm. This AgNPs/CMC sample showed promising antibacterial properties toward E. coli. Graphical Abstract

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“…In this context, Sharma, Yngard, and Lin (2009), Korbekandi, Iravani, and Abbasi (2009) have reviewed the various green strategies using myriad of bioresources explored for the preparation of nanoparticles. It is pertinent to mention that carbohydrate templated silver nanoparticles (Babu, Kim, Kim, Ahn, & Lee, 2010) have carved a unique niche in the domain of nanobiotechnology with an immense spectrum of applications particularly as anti-microbial bio-polymer nanocomposite. Macromolecules, such as starch, when used for encapsulation or entrapment of inorganic particles can impart novel properties to the latter (Ziolo et al, 1992).…”

Section: Introductionmentioning

confidence: 99%

Effect of sonication and aging on the templating attribute of starch for “green” silver nanoparticles and their interactions at bio-interface

Konwarh¹,

Karak²,

Sawian³

et al. 2011

Carbohydrate Polymers

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Development of semi-interpenetrating carbohydrate polymeric hydrogels embedded silver nanoparticles and its facile studies on E. coli

Cited by 53 publications

References 41 publications

Synthesis and properties of silver nanoparticles in chitosan‐based thermosensitive semi‐interpenetrating hydrogels

Synthesis and properties of silver nanoparticles in chitosan‐based thermosensitive semi‐interpenetrating hydrogels

A fast green synthesis of Ag nanoparticles in carboxymethyl cellulose (CMC) through UV irradiation technique for antibacterial applications

Effect of sonication and aging on the templating attribute of starch for “green” silver nanoparticles and their interactions at bio-interface

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