Characterisation of amine functionalised poly(3-hydroxybuturate-co-3-hydroxyvalerate) surfaces

Luk, Jing Zhong, Rondeau, Elisabeth, Trau, Matt, Cooper-White, Justin and Grondahl, Lisbeth (2011) Characterisation of amine functionalised poly(3-hydroxybuturate-co-3-hydroxyvalerate) surfaces. Polymer, 52 15: 3251-3258. doi:10.1016/j.polymer.2011.05.048

Author Luk, Jing Zhong
Rondeau, Elisabeth
Trau, Matt
Cooper-White, Justin
Grondahl, Lisbeth
Title Characterisation of amine functionalised poly(3-hydroxybuturate-co-3-hydroxyvalerate) surfaces
Journal name Polymer   Check publisher's open access policy
ISSN 0032-3861
Publication date 2011-07
Sub-type Article (original research)
DOI 10.1016/j.polymer.2011.05.048
Volume 52
Issue 15
Start page 3251
End page 3258
Total pages 8
Place of publication United Kingdom
Publisher Elsevier
Collection year 2012
Language eng
Formatted abstract
There is an increasing acceptance of the importance of tailoring biomaterial surface properties. This study aimed to introduce and characterise amine functionalities onto the hydrophobic bacterial polymer poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV). Gamma irradiation induced simultaneous grafting of 2-aminoethyl methacrylate (AEMA) onto PHBV films was carried out using various concentrations of AEMA (2.5 or 4.5 w/v%) in either water or methanol and at two irradiation doses (4.5 or 9 kGy). Successful grafting was verified from XPS analysis, water contact angle and ATR-FTIR spectroscopy. Characterisation using DSC indicated that grafting had occurred predominantly in the amorphous region of the PHBV substrate. 1H NMR of the grafting solution post grafting showed that monomer conversion is incomplete in methanol. The use of gold nano-particles (AuNPs) as a simple tool to probe the presence of these functional groups was evaluated using a suspension of citrate functionalized AuNPs prepared by reduction of Au(III) with citric acid. These particles were found to be polydisperse (0.8-2 nm and 7-70 nm) and negatively charged (zeta potential of -33 ± 9 mV) and capable of interacting electrostatically with the amine groups on the PHBV surface and imaged using SEM.
Keyword Surface modification
Induced Graft-Copolymerization
Gold Nanoparticles
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2012 Collection
School of Chemistry and Molecular Biosciences
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