Abu jerami dalam kaca, seramik kaca dan komposit polimer
| dc.contributor.author | Ismail, Hamisah | |
| dc.date.accessioned | 2015-05-25T07:36:32Z | |
| dc.date.available | 2015-05-25T07:36:32Z | |
| dc.date.issued | 2010 | |
| dc.description.abstract | This work consists of three main parts; characterization of rice straw and rice straw ash, rice straw ash in glasses and glass ceramics, and rice straw ash as a filler in polymer composites. Rice straws were burnt at fix temperatures of 500, 700, 900 and 1050 °C, heating rate of 10°C/min, and soaking time of one hour. Tests that were carried included X-ray fluorescence (XRF), X-ray diffraction (XRD), differential thermal analysis/thermal gravimetry (DT A/TG), fourier transform infrared spectroscopy (FTIR) and field emission scanning electron microscopy (FESEM). A rice straw which is burnt at 1 050 °C is found to have more silica content, which is 79 % in weight, compared to others temperature. Rice straw ash was used in glass making as a replacement for silica which is the main component in glass and normally resourced from silica sand. Three types of glasses produced, i.e AJ glass which used rice straw ash entirely as the silica source, AJPS glass used a mixture of 50 weight % of ash and 50 by % weight silica sand, and PS glass which were used silica sand entirely. Tests conducted on these three glasses were density and hardness tests. The parent glasses were analyzed by thermal analysis (DSC) to determine the nucleation and crystallization temperatures for subsequent heat treatment to produce glass ceramics. The tests for glass ceramics were density, hardness, XRD and also morphological analysis of the fracture surface. AJPS shows the highest density and hardness values, followed by PS and AJ glass and glass ceramics. The density for AJPS glass and glass ceramics is 2.6949 gcm-3 and 2.7349 gcm-3 , whilst the Knoop hardness is 648.58 HK and 704.49 HK respectively. Rice straw ash was also used as a filler in polymer composites and silica and this was compared to illite. Particle size and density analyses were carried out for all the fillers. The fillers and polypropylene (PP) matrix were compounded using the Brabender Plasticorder internal mixer at a temperature and rotor speed of 190°C and 50 rpm respectively. The filler loading was varied between 10% and 40% by weight. Various mechanical testing were carried out such as hardness, density, tensile and also morphological examination of the fractured surfaces. Polymer composites using illite as the filler ( 40 % weight) showed an excellent result compared to rice straw ash and silica filler. The density of the composite with 40 % weight illite is 2.1167 gem -J, whereas the hardness as measured by a durometer typeD is 77.3, tensile strength is 23.91 MPa, Young Modulus is 2511 MPa and result for elongation at break is 3.11 %. | en_US |
| dc.identifier.uri | http://hdl.handle.net/123456789/726 | |
| dc.language.iso | other | en_US |
| dc.title | Abu jerami dalam kaca, seramik kaca dan komposit polimer | en_US |
| dc.type | Thesis | en_US |
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