Mechanical Performance Of Bacterial Cellulose
Nanofibre-reinforced Epoxy Composites
Author(s)
H. Takagi, A. N. Nakagaito & K. Uchida
Abstract
This paper reports the preparation and characterization of a new type of natural
fibre nanocomposite, which is composed of bacterial cellulose nanofibre and
thermoset epoxy resin. Before combining with epoxy resin, the bacterial
cellulose nanofibre was prepared by a freeze-drying process. The effect of
nanofibre loading on the mechanical properties of the polymer composites has
been investigated. The tensile strength of the composites increased with
increasing fibre content, and reached the maximum tensile strength value of
about 74 MPa, reaching almost twice the strength of the neat resin. This strength
value was quite low as compared with a theoretical estimation. This discrepancy
seemed to be derived from weak interfacial adhesion.
Keywords: bacterial cellulose fibre, composites, epoxy resin, strength, modulus,
fracture, debonding.
1 Introduction
In recent years, much attention has been focused on plastic waste problems and
resource depletion in a global scale [1]. To build a sustainable society, research
and development of natural fibre reinforced polymer composites have been
carried out over a worldwide scale [1]. Some kinds of natural fibre composites
exhibit fully-biodegradable nature, and therefore they can be disposed off easily
and at the same time, there is no additional green house gas emissions even after
burning them (namely carbon neutrality) [2, 3].
Most of conventional studies on natural fibre composites have been made by
using macroscopic natural fibre bundle or single natural fibre (e.g. pulp) as a
reinforcement [4–10]. In the case of macroscopic natural fibres, they have often
Keywords
bacterial cellulose fibre, composites, epoxy resin, strength, modulus,
fracture, debonding.
Related Book
Other papers in this volume
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