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Thermo-chemical and mechanical properties of tea tree (Melaleuca alternifolia) fibre reinforced tapioca starch composites

Melaleuca alternifolia or commonly known as tea tree is a tall shrub or small tree in the plant genus Melaleuca. It is popular for its oil, which is tea tree oil where it has been employed largely in various industries of its antimicrobial properties. Tea tree fibres as the underutilized fibres were...

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Main Author: Rodney Jammy
Format: Thesis
Language:English
English
Published: 2015
Subjects:
QH573-671 Cytology
Online Access:https://eprints.ums.edu.my/id/eprint/40609/1/24%20PAGES.pdf
https://eprints.ums.edu.my/id/eprint/40609/2/FULLTEXT.pdf
https://eprints.ums.edu.my/id/eprint/40609/
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spelling my.ums.eprints.406092024-08-21T08:38:39Z https://eprints.ums.edu.my/id/eprint/40609/ Thermo-chemical and mechanical properties of tea tree (Melaleuca alternifolia) fibre reinforced tapioca starch composites Rodney Jammy QH573-671 Cytology Melaleuca alternifolia or commonly known as tea tree is a tall shrub or small tree in the plant genus Melaleuca. It is popular for its oil, which is tea tree oil where it has been employed largely in various industries of its antimicrobial properties. Tea tree fibres as the underutilized fibres were investigated physically, chemically and mechanically. From this study, it was found out that the tea tree leaf (TTL) had the highest density 0.42 g/cm3, and had the highest percentage of water absorption, 69.9%. From the tensile strength, tea tree trunk (TTT) gave the highest value, 65.44MPa, followed by tea tree branch (TTB), 48.43MPa and tea tree leaf (TTL), 47.47MPa. The chemical composition of tea tree fibres showed TTT had the highest cellulose content, which is 33.9%, followed by TTB, 27.2% and TTL, 13.5%. Meanwhile, TTL had the highest extractive value, 16.4%, almost 3 times higher than TTB and TTT due to the existence of tea tree oil in TTL. The fabrication of tea tree fibres reinforced tapioca starch (TS) composite successfully developed using casting method. The physical, thermo-chemical, and mechanical properties are undergone in order to get the characterization of the composite. The addition of tea tree fibres do not affect the chemical properties of composite as shown in Fourier transform infrared (FTIR) results, where all of the tea tree fibres and its reinforced composites show same pattern. From the mechanical test, the addition of 5% v/v of tea tree fibre as filler, improved the tensile strength of TS composite up to 34.39% in TTL/TS, 82.80% in TTB/TS and 203.18% in TTT/TS. Thermogravimetric analysis (TGA) proves that tea tree fibres increase thermal stability of composites. Scanning electron microscopy (SEM) shows a good dispersion of the tea tree fibre in the TS matrix. The water absorption and swelling thickness test of all tea tree fibres reinforced composites decreased compared to TS composite. Above all, all parts of the tea tree waste, namely TTL, TTB and TTT have the potential novel fibres which can act as reinforcement in developing a green biocomposite. 2015 Thesis NonPeerReviewed text en https://eprints.ums.edu.my/id/eprint/40609/1/24%20PAGES.pdf text en https://eprints.ums.edu.my/id/eprint/40609/2/FULLTEXT.pdf Rodney Jammy (2015) Thermo-chemical and mechanical properties of tea tree (Melaleuca alternifolia) fibre reinforced tapioca starch composites. Masters thesis, Universiti Malaysia Sabah.
institution Universiti Malaysia Sabah
building UMS Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Sabah
content_source UMS Institutional Repository
url_provider http://eprints.ums.edu.my/
language English
English
topic QH573-671 Cytology
spellingShingle QH573-671 Cytology
Rodney Jammy
Thermo-chemical and mechanical properties of tea tree (Melaleuca alternifolia) fibre reinforced tapioca starch composites
description Melaleuca alternifolia or commonly known as tea tree is a tall shrub or small tree in the plant genus Melaleuca. It is popular for its oil, which is tea tree oil where it has been employed largely in various industries of its antimicrobial properties. Tea tree fibres as the underutilized fibres were investigated physically, chemically and mechanically. From this study, it was found out that the tea tree leaf (TTL) had the highest density 0.42 g/cm3, and had the highest percentage of water absorption, 69.9%. From the tensile strength, tea tree trunk (TTT) gave the highest value, 65.44MPa, followed by tea tree branch (TTB), 48.43MPa and tea tree leaf (TTL), 47.47MPa. The chemical composition of tea tree fibres showed TTT had the highest cellulose content, which is 33.9%, followed by TTB, 27.2% and TTL, 13.5%. Meanwhile, TTL had the highest extractive value, 16.4%, almost 3 times higher than TTB and TTT due to the existence of tea tree oil in TTL. The fabrication of tea tree fibres reinforced tapioca starch (TS) composite successfully developed using casting method. The physical, thermo-chemical, and mechanical properties are undergone in order to get the characterization of the composite. The addition of tea tree fibres do not affect the chemical properties of composite as shown in Fourier transform infrared (FTIR) results, where all of the tea tree fibres and its reinforced composites show same pattern. From the mechanical test, the addition of 5% v/v of tea tree fibre as filler, improved the tensile strength of TS composite up to 34.39% in TTL/TS, 82.80% in TTB/TS and 203.18% in TTT/TS. Thermogravimetric analysis (TGA) proves that tea tree fibres increase thermal stability of composites. Scanning electron microscopy (SEM) shows a good dispersion of the tea tree fibre in the TS matrix. The water absorption and swelling thickness test of all tea tree fibres reinforced composites decreased compared to TS composite. Above all, all parts of the tea tree waste, namely TTL, TTB and TTT have the potential novel fibres which can act as reinforcement in developing a green biocomposite.
format Thesis
author Rodney Jammy
author_facet Rodney Jammy
author_sort Rodney Jammy
title Thermo-chemical and mechanical properties of tea tree (Melaleuca alternifolia) fibre reinforced tapioca starch composites
title_short Thermo-chemical and mechanical properties of tea tree (Melaleuca alternifolia) fibre reinforced tapioca starch composites
title_full Thermo-chemical and mechanical properties of tea tree (Melaleuca alternifolia) fibre reinforced tapioca starch composites
title_fullStr Thermo-chemical and mechanical properties of tea tree (Melaleuca alternifolia) fibre reinforced tapioca starch composites
title_full_unstemmed Thermo-chemical and mechanical properties of tea tree (Melaleuca alternifolia) fibre reinforced tapioca starch composites
title_sort thermo-chemical and mechanical properties of tea tree (melaleuca alternifolia) fibre reinforced tapioca starch composites
publishDate 2015
url https://eprints.ums.edu.my/id/eprint/40609/1/24%20PAGES.pdf
https://eprints.ums.edu.my/id/eprint/40609/2/FULLTEXT.pdf
https://eprints.ums.edu.my/id/eprint/40609/
_version_ 1809140078901985280
score 13.211869

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