Characteristic of renewable polymer incorporated with stabilizer to characterize the endurance to ultra voilet irradiation exposure
Waste vegetable from palm oils are most abundant biological sources and important raw materials for production of renewable polymer because of their versatility with high possibility to modify the chemical structure of triglycerides and it derivatives. In this study, waste vegetable oil was synthesi...
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| Format: | Thesis |
| Language: | English English English |
| Published: |
2016
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| Online Access: | http://eprints.uthm.edu.my/821/1/24p%20NIK%20NORMUNIRA%20MAT%20HASSAN.pdf http://eprints.uthm.edu.my/821/2/NIK%20NORMUNIRA%20MAT%20HASSAN%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/821/3/NIK%20NORMUNIRA%20MAT%20HASSAN%20WATERMARK.pdf |
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| Summary: | Waste vegetable from palm oils are most abundant biological sources and important raw materials for production of renewable polymer because of their versatility with high possibility to modify the chemical structure of triglycerides and it derivatives. In this study, waste vegetable oil was synthesized and crosslink with polymethane polyphenyl isocyanate, distilled water and titanium dioxide (TiO2) as filler to form renewable polymer. Two fabrication method was used; (i) manual casting which produced renewable polymer foam (RF) and (ii) compression moulding at 90 oC based on the evaporation of volatile matter and the product is known as compressed renewable polymer (CR). Composites of RF and CR is known as RFC and CRC respectively. The physical, vibration and damping properties are measured to determine the endurance of renewable polymer to UV irradiation exposure. The morphological structure and porosity of renewable polymer shows no significant changes after UV irradiation exposure. As the loading of TiO2 increased (up to 10 % of monomer weight), the thermal degradation temperature were increased at three different decomposition stages. The vibration transmissibility of renewable polymer based on resonance peak, resonance frequency and attenuation frequency at different thickness were shifted to lower frequency range from 23 Hz to 21 Hz with increasing of UV irradiation exposure time. Meanwhile, the damping property of 10 % and 5 % TiO2 filler loading (RFC10 and CRC5) gives maximum values of 0.5 and 0.6 respectively with increasing of UV irradiation exposure time. This is due to the potential of RFC10 and CRC5 to dissipate more energy in foam block system. Hence, TiO2 act as UV stabilizer enhance the photostability of renewable polymer which exhibit endurance to prolonged UV irradiation exposure. |
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