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| dc.contributor.author | TEGEGN, BETHELHEM | |
| dc.date.accessioned | 2020-03-17T05:36:11Z | |
| dc.date.available | 2020-03-17T05:36:11Z | |
| dc.date.issued | 2020-03-17 | |
| dc.identifier.uri | http://hdl.handle.net/123456789/10449 | |
| dc.description.abstract | The purpose of this research was to prepare biodegradable composite film for non-food packing application using gelatin, starch, PVA, glycerol and glutaraldehyde .Cow wet blue shaving dust with 2.1 % chrome content subjected to thermo-chemical treatment using alkali method (MgO) was used. The collagen hydrolysate had been filtered through filler press, collected and stored at 40C.Tamarind seed powder have been used as a row material for starch extraction, tamarind seed powder was boiled; the supernatant was filtered and mixed with equal amount of 99.6% ethanol alcohol. The precipitated polysaccharide was filtered, collected and stored. The film solution was prepared by varying gelatin, starch, and PVA, plasticizer and cross linker ratio. The extracted gelatin, starch and composite films have been analyzed for different physical chemical, mechanical properties and bio degradation property. Texture analyzer, viscometer, pH meter, mechanical testing machine, FTIR for functional group characterization, TGA for thermal property characterization have been used. The collagen hydrolysate has been analyzed for determination of chromium by using SLC 208 method and trace amount of chromium 0.0072% was found. The nitrogen, protein and ash content of the collagen hydrolysate on dry base is found to be 6.81%, 42.6% and 5.6% respectively. Degradable film developed by using gelatin, starch, PVA, glycerol and GA as a cross linker, has been tested for tensile strength, elongation at break, solubility, thermal stability and biodegradability. The composite film is thermally stable, had solubility (12.2%) and better elongation at break properties (76.5%,), biodegradability property compare with other degradable films for non-food item packing material application, But it’s tensile strength value is lower (1.1MPa).The approach wastes to resource not only reduce the burden of chrome containing waste disposal but also reduce environmental pollution caused by non-degradable packing materials. | en_US |
| dc.language.iso | en | en_US |
| dc.subject | Environmental Engineeringin | en_US |
| dc.title | PREPARATION OF BIODEGRADABLE FILM USING GELATIN FROM WET BLUE SHAVING DUST AND STARCH FROM TAMARIND SEED | en_US |
| dc.type | Thesis | en_US |
