Effects Of Microfibrillated Cellulose Addition
And Water Absorption On Mechanical Properties
Of Jute/PLA Composites
Author(s)
K. Takemura, S. Takai & H. Katogi
Abstract
In this study, the effects of microfibrillated cellulose (MFC) addition and water
absorption on mechanical properties of jute fiber reinforced composites were
investigated. Plain woven jute fiber cloth was used as reinforcement. Polylactic
acid (PLA) was used as matrix. Additions of MFC are conducted to matrix or
reinforcement. Specimens were fabricated by the compression molding method.
Static flexural and izod impact tests of composites were conducted. As a result,
the following conclusions are obtained. The addition of MFC was effective for
an improvement of flexural property. But, when the amount of MFC is too much,
the mechanical properties decreased. The reason is thought that the interfacial
adhesion was decreased by MFC addition．In addition, the interfacial adhesion
was decreased by absorbing water. The water absorption rate increased with an
increase of immersion time and adding MFC. Flexural strength decreases by
water absorption, but impact strength can be improved. Impact strength with
emulsion PLA almost did not change after immersion.
Keywords: biodegradable resin, microfibrillated cellulose, natural fiber, water
absorption, flexural, impact.
1 Introduction
Composite materials with high specific strength and high specific stiffness have
attracting attentions from a wide variety of fields. However, the solution of the
global warming is a major issue in the industrial society. Therefore, natural fiber
reinforced plastics (NFRP) composed by natural fiber and biodegradable resin is
focused as environmentally-friendly materials [1–3]. However, mechanical
properties of NFRP are inferior to glass fiber reinforce plastics. The
Keywords
biodegradable resin, microfibrillated cellulose, natural fiber, water
absorption, flexural, impact.
Related Book
Other papers in this volume
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