Relationship of moulding pressure and weight of granulate in improving the mechanical and characteristics of biopolymer from renewable resources
Waste cooking oils are problematic disposal especially in the developed countries. Options for disposing of waste cooking oil are limited. Pouring waste cooking oil down to the drain or sewers leads to clog and odour as well as damage wastewater leading to problems for humanlife. Thus, in this resea...
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| Format: | Thesis |
| Published: |
2016
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/9070/ http://eprints.uthm.edu.my/9070/1/Mohd_Khairul_Zaimy_Abd_Ghani.pdf |
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| Summary: | Waste cooking oils are problematic disposal especially in the developed countries.
Options for disposing of waste cooking oil are limited. Pouring waste cooking oil down
to the drain or sewers leads to clog and odour as well as damage wastewater leading
to problems for humanlife. Thus, in this research, vegetable waste cooking oil is used
as raw material to produce foam. This foam was crosslink with flexible isocyanate type
Polymethane Polyphenyl (Modify polymeric-MDI) and further processed into
granulate (powder) to be able to hot compress by hot compression moulding technique.
These fabricated samples were namely as biopolymer. The conversion process of biomonomer
into BP was examined using Fourier Transform Infra-Red (FTiR) show the
complete conversion of BP from bio-monomer indicated by 3351 cm-1 of N-H and
carbonyls C=O functional groups at 1743 cm-1. Meanwhile the weight loss of BP as a
function of temperature was determined by using Linseis Thermal Analyser (STA)
(TG + DTA) indicating 3 distinct regions comprises of soft and hard segment
degradation region at 253 °C and 410 °C respectively. The moulding pressure of 31
bar to 44 bar was set with different weight of granulate of BP from 110 gm to 160 gm.
The compressed BP gives the highest tensile and flexural value of 4.89 MPa and 18.08
MPa respectively. Evidently, both compress BP of the highest tensile and flexural were
affected by the highest density of 1.42 g/cm3. In general, the higher the compression
moulding pressure the less void was examined, as well as the weight of granulates in
the mould. The Scanning Electron Microscope (SEM) of fracture morphology surface
of BP shows both ductile and brittle modes, and experiencing a ductile to brittle
transition. This is due to increase interfacial strength at higher moulding pressure with
good interfacial adhesion between granulates. Thus, the optimal combination of
compression moulding parameters is helpful for polymer manufacturing with better
mechanical properties such as tensile and flexural strength. |
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