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Synthesis of Silver Nanoparticles Using a Novel Graft Copolymer and Enhanced Particle Stability via a "Polymer Brush Effect"

Vivek, A. V and Pradipta , S. M and Dhamodharan , R. (2008) Synthesis of Silver Nanoparticles Using a Novel Graft Copolymer and Enhanced Particle Stability via a "Polymer Brush Effect". Macromolecular rapid communications, 29 (9). pp. 737-742. ISSN 1022-1336

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Abstract

Polymer-encapsulated silver nanoparticles were synthesized and sterically stabilized by a new core-shell type system consisting of poly(S-alt-MA)-graft-PMMA copolymer that acts as a scaffold for the synthesis of size confined nanoparticles. The graft copolymer is synthesized via ambient temperature ATRP using the CuBr/PMDETA catalytic system at ambient temperature. The graft copolymer is hypothesized to function as a scaffold with the anhydride part interacting strongly with the silver ions, while the PMMA graft functions as a polymer brush that stabilizes the dispersion and prevents the particle aggregation due to a 'polymer brush effect'. UV absorption and TEM studies confirm that the synthesized silver composite particles have a core-shell structure.

Item Type:Article
Subjects:Physical Science > Nanophysics
Physical Science > Nano objects
Material Science > Nanochemistry
Material Science > Nanostructured materials
Divisions:Faculty of Engineering, Science and Mathematics > School of Physics
Faculty of Engineering, Science and Mathematics > School of Chemistry
ID Code:5828
Deposited By:JNCASR
Deposited On:11 Aug 2009 07:20
Last Modified:11 Aug 2009 07:20

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