Jumardi Sarifudin (2018) Studies to the effects of alumina nanoparticle (Al2O3) composite reinforced with tapioca starch. Masters thesis, Universiti Malaysia Sabah.
![[img]](https://eprints.ums.edu.my/style/images/fileicons/text.png) |
Text
24 PAGES.pdf Download (1MB) |
|
Text
FULLTEXT.pdf Restricted to Registered users only Download (3MB) |
Abstract
The tapioca starch is characterized as natural polymer from plant whereas the mechanical properties should be increased to allow these materials to really be competitive with other petroleum-based plastic. The purpose of performed investigations was improvement of mechanical properties of this material by introducing Alumina-nanoparticle (Al2O3) as reinforcement to form a composites material. The composites were manufactured by fabrication with weight as follow; water (100 g), glycerol as plasticizer (2.5g), (5g starch and 0 g alumina nanoparticle-sample A), (10g starch and 0g alumina nanoparticle-sample B), (15g starch and 0g alumina nanoparticle-sample C). For sample (A, B, C), the amount of starch is decrease by 0.3g and amount of alumina nanoparticle increase by 0.3g for each 5 sub-sample. Tensile test had done for each sample (force applied and elongation at break). SEM analysis were continue to explore the fractography properties and multiple linear regression functioned to obtain an equation of composites. There was noticed enhancement in (tensile strength; Young modulus) and decreasing in elongation. The interpretation of model starch and alumina explained 82.3 % variation of stress. If starch increase by 1 g and other factors constant, it increased stress by 0.018 and if alumina increases by 1 g and others factors constant, it increased stress by 0.0189. Interpretation of model starch and alumina may explain 86.4 % variation of elongation. If starch increase by 1 g and others factors constant, it increased elongation by 0.443 mm and if alumina increase by 1g and others factor constant, it increased elongation by 5.674. Reinforced alumina nanoparticle to starch was effective to increase the strength of composites. Starch-alumina nanoparticle can be applied as a new finding to the composites material field.
| Item Type: | Thesis (Masters) |
|---|---|
| Keyword: | Tapioca starch, Alumina nanoparticles, Composites materials, Tensile strength, Young’s modulus, Elongation at break, Fractography |
| Subjects: | T Technology > TP Chemical technology > TP1-1185 Chemical technology |
| Department: | FACULTY > Faculty of Engineering |
| Depositing User: | DG MASNIAH AHMAD - |
| Date Deposited: | 25 Mar 2025 15:17 |
| Last Modified: | 25 Mar 2025 15:17 |
| URI: | https://eprints.ums.edu.my/id/eprint/43334 |
Actions (login required)
 |
View Item |