Next Article in Journal
The Effects of Loading Rate and Duration on the Axial Behavior of Low-Strength and Medium-Strength Noncircular Concrete Members Confined by Fiber-Reinforced Polymer Sheets
Previous Article in Journal
A Coarse-Grained DNA Model Parameterized from Atomistic Simulations by Inverse Monte Carlo
Polymers 2014, 6(6), 1676-1684; doi:10.3390/polym6061676
Article

Laccase Functionalization of Flax and Coconut Fibers

1,* , 2
,
1
,
3
,
3,4
,
5
 and
1,5
Received: 25 March 2014 / Revised: 20 May 2014 / Accepted: 26 May 2014 / Published: 30 May 2014
View Full-Text   |   Download PDF [209 KB, 4 June 2014; original version 30 May 2014]   |   Browse Figures

Abstract

Natural fibers have gained much attention as reinforcing components in composite materials. Despite several interesting characteristics like low cost, low density, high specific properties and biodegradability they show poor compatibility with the polymer matrix. We have shown that it is possible to use a laccase from Trametes hirsuta as a biocatalyst to attach different types of functional phenolic molecules onto the fibers. A 5% incorporation of the functional molecules was achieved as measured via X-ray photoelectron spectroscopy (XPS) in flax although it was lower in coconut fibers. In combination with different mediators it was possible to broaden the activation scope and graft hydrophobic molecules like dimer fatty amines. Among the different mediators tested 1-hydroxybenzotriazole (HBT), 2,2,6,6-tetramethylpiperidin-1-yloxy (TEMPO) and 2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS), TEMPO were the most effective achieving a 10% increase in carbon as measured by XPS.
Keywords: laccase; flax; coconut; dimer fatty amine laccase; flax; coconut; dimer fatty amine
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Share & Cite This Article

Further Mendeley | CiteULike
Export to BibTeX |
EndNote
MDPI and ACS Style

Acero, E.H.; Kudanga, T.; Ortner, A.; Kaluzna, I.; de Wildeman, S.; Nyanhongo, G.S.; Guebitz, G.M. Laccase Functionalization of Flax and Coconut Fibers. Polymers 2014, 6, 1676-1684.

View more citation formats

Article Metrics

For more information on the journal, click here

Comments

Cited By

[Return to top]
Polymers EISSN 2073-4360 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert