Synthesis of Micro-cellulose Reinforced Polyvinyl Alcohol Micro-Biocomposite Materials
| dc.contributor.advisor | Hundessa, Dessalegn (PhD) | |
| dc.contributor.author | Tadele, Beyene | |
| dc.date.accessioned | 2020-11-26T08:52:36Z | |
| dc.date.accessioned | 2023-11-10T14:54:36Z | |
| dc.date.available | 2020-11-26T08:52:36Z | |
| dc.date.available | 2023-11-10T14:54:36Z | |
| dc.date.issued | 2018-07 | |
| dc.description.abstract | This study focused on developing and evaluating the performance of cellulose/polyvinyl alcohol microbiocomposites. Cellulose has a potential to become a key resource in the development of biodegradable films composites and therefore, incorporating microcellulose into different materials have become an attractive research topics for production of micro-biocomposite materials. The objective of this study was to fabricate cellulose reinforced polyvinyl alcohol micro-biocomposite materials and evaluate the effectiveness of the reinforcement. The extraction of microcellulose was done by alkaline treatment with 8%-20%wt NaOH aqueous solution with the ratio of 1:10 solid: liquid loading (w/v) in temperatures range of (40 C) for (1hr-5hr) and 36.65% optimum yield was obtained. The particle size analysis by dynamic light scattering (DLS) showed the mean particle size found was 871.35µm confirming the product was microcellulose. The Fourier transform infrared spectroscopy (FTIR) indicated the effectiveness of pretreatment in removing lignin and hemicellulose. Solvent casting method was used to reinforce microcellulose in PVOH polymer. Water absorption test results shown that the reinforcement reduced the water absorption of the PVOH from 84% for neat PVOH to 62 % for 8% MCC composite and from 84 % to 75 % for 4% SCB and 84% to 69 % for 4% MCC. Increment in tensile strength from 31 MPa for neat PVOH to 54 MPa for PVOH/ 8%MCC and reduction in elongation at break from 355MPa for neat PVOH to 132 MPa for PVOH/ 8%MCC were observed from the mechanical property test results. The SEM micrograph and optical transparency of the films showed uniform distribution and formation of network structure through hydrogen bonding. | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/12345678/23617 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | bagasse | en_US |
| dc.subject | natural filler | en_US |
| dc.subject | extraction | en_US |
| dc.subject | celluloses | en_US |
| dc.subject | biocomposite | en_US |
| dc.subject | interaction | en_US |
| dc.subject | morphology | en_US |
| dc.title | Synthesis of Micro-cellulose Reinforced Polyvinyl Alcohol Micro-Biocomposite Materials | en_US |
| dc.type | Thesis | en_US |