Publication: Experimental investigation on the polymer flow in a restriction flow path
| datacite.subject.fos | oecd::Engineering and technology::Materials engineering::Materials engineering | |
| dc.contributor.author | Muhammad Afiq Bin Nurul Rashidi | |
| dc.date.accessioned | 2025-06-11T07:06:25Z | |
| dc.date.available | 2025-06-11T07:06:25Z | |
| dc.date.issued | 2024-08-01 | |
| dc.description.abstract | The experimental investigation of polymer behaviour in restricted flow paths is critical for optimizing industrial processing techniques and enhancing material properties. This thesis focuses on the rheological properties of polypropylene (PP) subjected to various shear rates and temperatures. Utilizing capillary rheometer testing, the viscosity, shear stress, and shear rate of PP melts were analysed. The study reveals that the viscosity of PP decreases with increasing shear rate, indicating shear-thinning behaviour. Furthermore, thermal imaging provides insight into surface characteristics post-extrusion. Notably, the observation shows that PP melts processed at higher temperatures exhibit lower viscosity and clearer colour, which can be attributed to reduced molecular entanglement and degradation. Additionally, the die swell phenomenon was quantified, demonstrating its dependence on shear rate and temperature by using both numerical analysis and experimental analysis. The data obtained from the numerical analysis may help in determining the best possible parameters needed to prevent more die swell to occur when doing the experimental analysis, potentially leading to more efficient manufacturing practices and improved material performance. | |
| dc.identifier.uri | https://erepo.usm.my/handle/123456789/22095 | |
| dc.language.iso | en | |
| dc.title | Experimental investigation on the polymer flow in a restriction flow path | |
| dc.type | Resource Types::text::report::research report | |
| dspace.entity.type | Publication | |
| oairecerif.author.affiliation | Universiti Sains Malaysia |