Preparation of Microcrystalline Cellulose from Water Hyacinth Reinforced Polylactic Acid Biocomposite

Teerapa Semachai,Panitnad Chandranupap,Pravitra Chandranupap,J. Wang,Y.F. Yang

doi:10.1051/matecconf/201818702003

Teerapa Semachai, Panitnad Chandranupap + Show 3 more

Open Access

https://doi.org/10.1051/matecconf/201818702003

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Abstract

In this work, we successfully mixed polylactic acid (PLA) with microcrystalline cellulose (MCC) from water hyacinth. The MCC was prepared by treating water hyacinth fiber (WHF). Then hydrochloric acid was used to hydrolyze treated fiber to MCC. X-rays diffraction (XRD) showed that the MCC produced has 73.28 per cent crystallinity. Internal mixing was used to combine composites between MCC and PLA. Percentages of MCC were 1, 5, 10 and 15, respectively. Fourier transform infrared (FT-IR) spectroscopy indicated that the interaction between MCC and PLA are only mechanically interaction. Tensile testing of this composite (ASTM D638) revealed that tensile strength and percentage of elongation at break decreased but the increase of young's modulus. The morphological analysis was observed thru composites fractured surface by Scanning Electron Microscope (SEM). They showed a void between cellulosic fiber and PLA when high amount of MCC conformed with tensile results.

Highlights

Nowadays, there is an increasing demand for products made from renewable and sustainable non-petroleum based resources
Polylactic acid (PLA) is the second most important bioplastic of the world in regard to consumption in volume [2]. It has been used in several applications such as food packaging, water and milk bottles, barriers for sanitary products and diapers, as well as in automotive applications [3]
The crystallinity of microcrystalline cellulose (MCC) has been analyzed by x-ray diffractometer

Summary

Introduction

There is an increasing demand for products made from renewable and sustainable non-petroleum based resources. Polylactic acid (PLA) is the second most important bioplastic of the world in regard to consumption in volume [2]. It has been used in several applications such as food packaging, water and milk bottles, barriers for sanitary products and diapers, as well as in automotive applications [3]. Its can be derived from renewable resources like starch so it has high water vapor permeability but poor mechanical properties. To improve such properties, some additives or other ingredients such as nanoclays, fibers, carboxymathylcellulose (CMC), microcrystalline cellulose (MCC), etc. Some additives or other ingredients such as nanoclays, fibers, carboxymathylcellulose (CMC), microcrystalline cellulose (MCC), etc. have been added [4]

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