Imperial College London

Prof Milo Shaffer

Faculty of Natural SciencesDepartment of Chemistry

Professor of Materials Chemistry
 
 
 
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Contact

 

+44 (0)20 7594 5825m.shaffer Website

 
 
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Assistant

 

Mr John Murrell +44 (0)20 7594 2845

 
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Location

 

M221Royal College of ScienceSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Clancy:2017:10.1016/j.polymer.2017.10.047,
author = {Clancy, AJ and Serginson, JM and Greenfield, JL and Shaffer, MSP},
doi = {10.1016/j.polymer.2017.10.047},
journal = {Polymer},
pages = {263--271},
title = {Systematic Comparison of Single-Walled Carbon Nanotube/ Poly(vinyl Acetate) Graft-to Reactions},
url = {http://dx.doi.org/10.1016/j.polymer.2017.10.047},
volume = {133},
year = {2017}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - The covalent grafting of polymers to single-walled carbon nanotubes (SWCNTs) is widely used to improve solvent compatibility, as well as composite and functional performance. Here, three different graft-to strategies are directly compared, using azide, diazonium, and bromide terminated polymers, over four different molecular weights (oligomeric to 10 kDa) using specifically synthesized low polydispersity, end-group controlled poly(vinyl acetate) (PVAc) prepared by polymerisation using a bespoke protected-amine RAFT agent. Coupling of the bromo-polymer to reduced SWCNTs led to higher degrees of functionalisation (grafting ratios up to 68.9%) than the azide and diazonium grafting reactions, attributed to better initial dispersion of the pre-grafted SWCNTs. The use of higher molecular weight polymers led to a decrease in the total weight of polymer grafted, as the increase in per-polymer weight is more than offset by steric occlusion on the SWCNT surface. For these graft-to reactions, the dispersibility of grafted SWCNTs was found to depend most strongly on the polymer molecular weight, not total weight of grafted polymer or grafting chemistry, with an intermediate Mn∼5757 PVAc giving the best dispersibilities, at up to 118 mg L−1.
AU - Clancy,AJ
AU - Serginson,JM
AU - Greenfield,JL
AU - Shaffer,MSP
DO - 10.1016/j.polymer.2017.10.047
EP - 271
PY - 2017///
SN - 0032-3861
SP - 263
TI - Systematic Comparison of Single-Walled Carbon Nanotube/ Poly(vinyl Acetate) Graft-to Reactions
T2 - Polymer
UR - http://dx.doi.org/10.1016/j.polymer.2017.10.047
UR - http://hdl.handle.net/10044/1/52468
VL - 133
ER -