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Carbon nanotube-graft-block copolymers containing silver nanoparticles

Adeli, M ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1142/S0219581X09006365
  3. Abstract:
  4. Polycaprolactone-polylactide block copolymers (PCL-block-PLA) were grafted onto filled multi-wall carbon nanotubes (MWCNT) successfully. In this synthesis, MWCNTs were opened and functionalized, and then they were filled by silver nanoparticles. The filled MWCNT were used as macroinitiator for ring opening polymerization of ε-caprolactone and L-lactide. Then the end hydroxyl functional groups of MWCNT-graft-PCL or MWCNT-graft-PLA were used as initiator for ring opening polymerization of lactide and ε-caprolactone and MWCNT-graft-PCL-block-PLA or MWCNT-graft-PLA-block-PCL were obtained, respectively. Length of grafted copolymer chains onto the MWCNT was controlled using CNT/monomer ratio. Nanocomposites' properties depend on the length of polymer blocks strongly. Structure of nanocomposites was evaluated by TEM and spectroscopy methods. © 2009 World Scientific Publishing Company
  5. Keywords:
  6. Nanoparticles ; Poly(caprolactone) ; Poly(lactide) ; Caprolactone ; Functionalized ; Grafted copolymers ; L-lactide ; Macroinitiators ; Multi-wall carbon nanotubes ; MWCNT ; Polymer blocks ; Silver nanoparticles ; TEM ; Block copolymers ; Carbon nanotubes ; Copolymerization ; Functional groups ; Functional polymers ; Grafting (chemical) ; Multiwalled carbon nanotubes (MWCN) ; Nanocomposites ; Nanoparticles ; Organic polymers ; Polycaprolactone ; Polymers ; Silver ; Spectroscopic analysis ; Synthesis (chemical) ; Ring opening polymerization
  7. Source: International Journal of Nanoscience ; Volume 8, Issue 6 , 2009 , Pages 533-541 ; 0219581X (ISSN)
  8. URL: http://www.worldscientific.com/doi/abs/10.1142/S0219581X09006365