Physical and mechanical behaviors of pineapple leaf fibre reinforced thermoplastics corn starch bio polymer composites
Recently, the desire to develop environmentally friendly products is growing due to the accumulating of non-biodegradable waste, mainly the disposable product. Starch is one of the potential materials due to the easy availability, low cost, renewability and biodegradability. However, the natural...
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| Format: | Thesis |
| Language: | English English English |
| Published: |
2020
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/920/2/24p%20NAZRI%20%20HUZAIMI%20%20ZAKARIA.pdf http://eprints.uthm.edu.my/920/1/NAZRI%20%20HUZAIMI%20%20ZAKARIA%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/920/3/NAZRI%20%20HUZAIMI%20%20ZAKARIA%20WATERMARK.pdf http://eprints.uthm.edu.my/920/ |
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| Summary: | Recently, the desire to develop environmentally friendly products is growing due to
the accumulating of non-biodegradable waste, mainly the disposable product. Starch
is one of the potential materials due to the easy availability, low cost, renewability and
biodegradability. However, the natural behaviours associated with corn starch (CS)
have demonstrated poor mechanical behaviours. Therefore, the modification of CS
with the glycerol was applied to form thermoplastics corn starch (TPCS). Hence,
characterizations of the TPCS were investigated and the best result was obtained from
a mixture of 70 wt.% CS and 30 wt.% glycerol. Meanwhile, pineapple leaf fibre
(PALF) is a versatile plant which can be
considered a renewable source for composite
development. Then, the modification procedure to enhance the behaviours of TPCS
reinforced by PALF was employed by using several method; (I) preparation by using
multi layers and single layer (2) reinforcement with different lengths of PALF, and (3)
treatment with sodium hydroxide (NaOH). PALF reinforcement at the weight ratio of
20:80, 30:70, 40:60, 50:50, and 60:40 was prepared with TPCS. Consequently, the
findings showed that the mechanical behaviours of the treated PALE/TPCS bio
composite were improving via single layer. The tensile strength at low PALF loadings
produced low values but when reached 40 to 50 wt.%, the tensile strength achieved
the highest results. In terms of physical analysis, the preparation of treated
PALE/TPCS bio-composite by single layer had a significant impact on moisture
absorption and water absorption characteristics. In addition, the tests such as soil burial
and water solubility were also affected by the fibre loading. Next, the PALF length
affected the physical and mechanical behaviours of PALE/TPCS bio-composite. PALF
with a length of IO mm showed better characteristics than the length of 2 mm and 30
mm. In conclusion, the TPCS/PALF bio-composites are potential materials for
biodegradable products such as non-load bearing applications. |
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