Synthesis of silver–polystyrene nanocomposite particles using water in supercritical carbon dioxide medium and its antimicrobial activity

Kamrupi, I. R.; Phukon, Pinkee; Konwer, B.K.; Dolui, Swapan Kumar

doi:10.1016/j.supflu.2010.09.027

Cited by 36 publications

(21 citation statements)

References 24 publications

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“…The nanocomposite synthesized via in-situ miniemulsion polymerization showed highly potent antibacterial activity toward both grampositive and gram-negative bacteria comparing the neat latex and the blended nanocomposite, which makes it useful for a wide range of biomedical and general applications [3]. Kamrupi et al (2011) reported a novel method based on ex-situ dispersion of silver nanoparticles within the monomers and subsequent emulsion polymerization using water-in-sc-CO2 medium has introduced in this study. Silver nanoparticles were synthesized by chemical reduction of silver nitrate using sodium borohydrate as a reducing agent and polydimethylsiloxane (PDMS) as a stabilizer in the water-in-sc-CO2 medium.…”

Section: Biomedical Application Of Metal-polymer Nanocompositesmentioning

confidence: 97%

“…First, in-situ technique nanoparticles are generated inside polymer matrix by decomposition of metal precursors and first monomer is polymerized in solution containing metal ions chemical species and then metal nanoparticles are obtained reducing metal ions through chemical, thermal or photolysis methods [3]. Second technique is ex-situ technique in which nanoparticles are produced first by chemical methods then are distributed into a polymer solution or monomer solution to polymerize [4]. Development of new nanocomposites by using various materials is highly demanding area by advance techniques.…”

Section: Inroductionmentioning

confidence: 99%

“…The silver/polystyrene nanocomposite particles exhibited antimicrobial activity against a number of bacteria. The current work represents a simple, reproducible and universal way to prepare a variety of metalpolymer nanocomposite particles [4].…”

Section: Biomedical Application Of Metal-polymer Nanocompositesmentioning

confidence: 99%

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Current view on biomedical applications of synthetic metal-polymer nanocomposites

Kaushik¹,

Sharma²

2014

Janaki Med. Coll. J. Med. Sci.

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Recent advances in the field of nanotechnology led several groups to recognize the promise of recruiting nanocomposities to the ongoing battle against pathogenic gram-positive and gramnegative bacteria and metal-polymer nanocomposites are a typical example. On the basis of recent literature, the nanocomposities are synthesized mainly by two techniques i.e. in-situ and ex-situ technique and these nanocomposities have great biomedical applications in terms of their antibacterial activity. A large battery of newly developed and discovered nanocomposities has been accumulating during the last decade.

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Section: Biomedical Application Of Metal-polymer Nanocompositesmentioning

confidence: 97%

Section: Inroductionmentioning

confidence: 99%

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Current view on biomedical applications of synthetic metal-polymer nanocomposites

Kaushik¹,

Sharma²

2014

Janaki Med. Coll. J. Med. Sci.

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“…This result is in good agreement with our earlier works showing molecular weight distribution in a similar range. 17,18 The PDI of the polymers are observed in the range of 1.26-1.67. From these GPC data, it can be confirmed that the PDI and molecular weight of the polymer particles are independent of the pressure at which the polymer was synthesized.…”

Section: Gel Permeation Chromatographic Analysismentioning

confidence: 98%

Synthesis of macroporous polymer particles by suspension polymerization using supercritical carbon dioxide as a pressure‐adjustable porogen

Kamrupi¹,

Pokhrel²,

Kalita³

et al. 2011

Adv Polym Technol

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ABSTRACT:Reported herein is a green route for the synthesis of macroporous polystyrene particles by suspension polymerization in water in sc-CO 2 medium using polyvinyl alcohol (PVA) as stabilizer, divinylbenzene (DVB) as cross-linker, and azobisisobutyronitrile (AIBN) as initiator. The solvent properties of sc-CO 2 are adjusted in such a way that it acts as a pressure-adjustable porogen. All the reactions were carried out at pressures of 70-320 bar and a temperature of 75• C with an agitation speed of 700 rpm. With an increase in pressure (>70 bar), the diameter of the particles increases (8-22 μm), and the surface area of the particles also increases. Similarly, the pore diameter of

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“…Nickel (II) complexes bearing N, O-chelate ligand activation for MMA polymerization yielded poly (methyl methacrylate) (PMMA) with rich syndiotacticity microstructure [4][5][6][7][8][9][10]. The chelating polymers find applications in bioinorganic industry [11], wastewater treatment [12,13], pollution control [14], hydrometallurgy [15], preconcentration [16], anionic polyelectrolyte hydrogels [17], cation-exchange resins [18] , showed potential applications in material science as conductive [19], luminescent [20], magnetic, porous, chiral or non-linear optical materials [21], catalytic [22][23][24][25],organic synthesis [26], polymer drug graft, recovery of trace metal ions [13] and antimicrobial activities [27,28].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization and Biological Activity of Polymer Nickel (Ii) Complex

Salah¹,

Elaasser²,

Osman³

et al. 2016

JAC

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I S S N 2 3 2 1 -8 0 7 x V o l u m e 1 2 N u m b e r 4 J o u r n a l o f A d v a n c e s i n C h e m i s t r y 4387 | P a g e c o u n c i l f o r I n n o v a t i v e R e s e a r c h A p r i l 2 0 1 6 w w w . c i r w o r l d . c o m (DTA and TGA). Conductivity measurement reveals the nonelectrolytic nature of the complex. This confirms that, the anion is coordinated to the metal ion. The IR reveal the metal ion is coordinated via the nitrogen atom of 4-VP. Nickel complex and polymer nickel complex have been tested invitro against number of tumor and number of microorganisms in order to assess their anti tumor and antimicrobial properties. The antimicrobial activity was observed by compounds VP-Ni and MMA-VP-Ni under the screening conditions. The activity against HCT-116 cells was detected for compound VP-Ni (with IC50 value 9.8±0.6 µg/ml), compared with reference standard (24.6±0.3 µg/ml) followed by MMA-VP-Ni (48.3±1.5). In conclusion, this study highlighted the synthesis of polymer nickel complex, and proved the promising biological activity of the synthesized compounds. SYNTHESIS, CHARACTERIZATION AND BIOLOGICAL ACTIVITY OF POLYMER NICKEL (II) COMPLEX

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Synthesis of silver–polystyrene nanocomposite particles using water in supercritical carbon dioxide medium and its antimicrobial activity

Cited by 36 publications

References 24 publications

Current view on biomedical applications of synthetic metal-polymer nanocomposites

Current view on biomedical applications of synthetic metal-polymer nanocomposites

Synthesis of macroporous polymer particles by suspension polymerization using supercritical carbon dioxide as a pressure‐adjustable porogen

Synthesis, Characterization and Biological Activity of Polymer Nickel (Ii) Complex

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