Overcoming interfacial affinity issues in natural fiber reinforced polylactide biocomposites by surface adsorption of amphiphilic block copolymers

Magniez, Kevin, Voda, Andreea S., Kafi, Abdullah A., Fichini, Audrey, Guo, Qipeng and Fox, Bronwyn L. 2013, Overcoming interfacial affinity issues in natural fiber reinforced polylactide biocomposites by surface adsorption of amphiphilic block copolymers, ACS applied materials and interfaces, vol. 5, no. 2, pp. 276-283.

Attached Files
Name Description MIMEType Size Downloads

Title Overcoming interfacial affinity issues in natural fiber reinforced polylactide biocomposites by surface adsorption of amphiphilic block copolymers
Author(s) Magniez, Kevin
Voda, Andreea S.
Kafi, Abdullah A.
Fichini, Audrey
Guo, Qipeng
Fox, Bronwyn L.
Journal name ACS applied materials and interfaces
Volume number 5
Issue number 2
Start page 276
End page 283
Total pages 8
Publisher American Chemical Society
Place of publication Washington, D.C.
Publication date 2013
ISSN 1944-8244
1944-8252
Keyword(s) amphiphile
biocomposites
interfacial interaction
natural fibers
polylactide
surface adsorption
Summary This work demonstrates that the interfacial properties in a natural fiber reinforced polylactide biocomposite can be tailored through surface adsorption of amphiphilic and biodegradable poly (ethylene glycol)-b-poly-(L-lactide) (PEG-PLLA) block copolymers. The deposition from solvent solution of PEG-PLLA copolymers onto the fibrous substrate induced distinct mechanisms of molecular organization at the cellulosic interface, which are correlated to the hydrophobic/hydrophilic ratios and the type of solvent used. The findings of the study evidenced that the performance of the corresponding biocomposites with polylactide were effectively enhanced by using these copolymers as interfacial coupling agents. During the fabrication stage, diffusion of the polylactide in the melt induced a change in the environment surrounding block copolymers which became hydrophobic. It is proposed that molecular reorganization of the block copolymers at the interface occurred, which favored the interactions with both the hydrophilic fibers and hydrophobic polylactide matrix. The strong interactions such as intra- and intermolecular hydrogen bonds formed across the fiber−matrix interface can be accounted for the enhancement in properties displayed by the biocomposites. Although the results reported here are confined, this concept is unique as it shows that by tuning the amphiphilicity and the type of building blocks, it is possible to control the surface properties of the substrate by self-assembly and disassembly of the amphiphiles for functional materials.
Language eng
Field of Research 091202 Composite and Hybrid Materials
100706 Nanofabrication, Growth and Self Assembly
Socio Economic Objective 870303 Polymeric Materials (e.g. Paints)
HERDC Research category C1 Refereed article in a scholarly journal
Persistent URL http://hdl.handle.net/10536/DRO/DU:30053631

Document type: Journal Article
Collection: Institute for Frontier Materials
Connect to link resolver
 
Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved.

Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 0 times in TR Web of Science
Scopus Citation Count Cited 1 times in Scopus
Google Scholar Search Google Scholar
Access Statistics: 30 Abstract Views, 3 File Downloads  -  Detailed Statistics
Created: Fri, 12 Jul 2013, 15:32:46 EST

Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.