Effects of cobalt stearate on the properties of compatibilized low density polyethylene/ jackfruit seeds flour blends
The effect of adipic acid (AA) and citric acid (CA) on the tensile, morphological, and thermal properties of low-density polyethylene (LDPE)/ jackfruit seeds flour (JSF) was investigated. Initially, the LDPE was mixed with various JSF contents for I 0 minutes by using internal mixer (Brabender). Th...
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my-unimap-781802023-04-04T02:00:54Z Effects of cobalt stearate on the properties of compatibilized low density polyethylene/ jackfruit seeds flour blends Sam Sung, Ting, Dr. The effect of adipic acid (AA) and citric acid (CA) on the tensile, morphological, and thermal properties of low-density polyethylene (LDPE)/ jackfruit seeds flour (JSF) was investigated. Initially, the LDPE was mixed with various JSF contents for I 0 minutes by using internal mixer (Brabender). The tensile properties were evaluated by using Universal Testing Machine (UTM) according to ASTM D638. The tensile strength and elongation at the break (Eb) were significantly improved by the addition of AA and CA, as evidenced by morphological analysis using scanning electron microscopy (SEM). On the other hand, the Young's modulus increased with JSF content up to 3 wt% and decreased thereafter. The crystallinity and crystallization temperatures of the blends increase with the incorporation of AA and CA, compared with uncompatibilized blends. The thermal stability of the mixture was lower with increasing JSF content. However, AA and CA had improved the thermal stability of LDPE/JSF blends. The water absorption increased with increasing amount of JSF content. The degradability of the sample had been investigated for 9 months soil burial and natural weathering test. It was found that for higher JSF content resulted in higher degradation. In the presence of compatibilizer, the interfacial adhesion was significantly improved and lower the degradation duration. Lastly, cobalt stearate (CS) had been added as prooxidantin order to accelerate the degradation process. The tensile strength and Eb of the blends with CS were more susceptible to degradation compare to the blends without CS. Meanwhile, during weathering and soil burial test, the crystallinity increased with the addition of CS in the blends. Universiti Malaysia Perlis (UniMAP) Thesis en http://dspace.unimap.edu.my:80/xmlui/handle/123456789/78180 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78180/4/license.txt 8a4605be74aa9ea9d79846c1fba20a33 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78180/5/Page%201-24%20%28Santhiya%29.pdf d3cf7312253f8bef7170c993d5336c51 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78180/2/Full%20text.pdf 75819e51ac5453abb9db31fd74bbf50f http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78180/3/Declaration%20Form.pdf 5871c27e960347ff2d256bd2d3d1d8b7 Universiti Malaysia Perlis (UniMAP) Jackfruit Jackfruit seeds flour (JSF) Polymer Polymer blends School of Bioprocess Engineering |
| institution |
Universiti Malaysia Perlis |
| collection |
UniMAP Institutional Repository |
| language |
English |
| advisor |
Sam Sung, Ting, Dr. |
| topic |
Jackfruit Jackfruit seeds flour (JSF) Polymer Polymer blends |
| spellingShingle |
Jackfruit Jackfruit seeds flour (JSF) Polymer Polymer blends Effects of cobalt stearate on the properties of compatibilized low density polyethylene/ jackfruit seeds flour blends |
| description |
The effect of adipic acid (AA) and citric acid (CA) on the tensile, morphological, and thermal properties of low-density polyethylene (LDPE)/ jackfruit seeds flour (JSF) was investigated. Initially, the LDPE was mixed with various JSF contents
for I 0 minutes by using internal mixer (Brabender). The tensile properties were evaluated by using Universal Testing Machine (UTM) according to ASTM D638. The tensile strength and elongation at the break (Eb) were significantly improved
by the addition of AA and CA, as evidenced by morphological analysis using scanning electron microscopy (SEM). On the other hand, the Young's modulus increased with JSF content up to 3 wt% and decreased thereafter. The crystallinity and crystallization temperatures of the blends increase with the incorporation of AA and CA, compared with uncompatibilized blends. The thermal stability of the mixture was lower with increasing JSF content. However, AA and CA had improved the thermal stability of LDPE/JSF blends. The water absorption increased with increasing amount of JSF content. The degradability of the sample
had been investigated for 9 months soil burial and natural weathering test. It was found that for higher JSF content resulted in higher degradation. In the presence of compatibilizer, the interfacial adhesion was significantly improved and lower
the degradation duration. Lastly, cobalt stearate (CS) had been added as prooxidantin order to accelerate the degradation process. The tensile strength and Eb of the blends with CS were more susceptible to degradation compare to the blends
without CS. Meanwhile, during weathering and soil burial test, the crystallinity
increased with the addition of CS in the blends. |
| format |
Thesis |
| title |
Effects of cobalt stearate on the properties of compatibilized low density polyethylene/ jackfruit seeds flour blends |
| title_short |
Effects of cobalt stearate on the properties of compatibilized low density polyethylene/ jackfruit seeds flour blends |
| title_full |
Effects of cobalt stearate on the properties of compatibilized low density polyethylene/ jackfruit seeds flour blends |
| title_fullStr |
Effects of cobalt stearate on the properties of compatibilized low density polyethylene/ jackfruit seeds flour blends |
| title_full_unstemmed |
Effects of cobalt stearate on the properties of compatibilized low density polyethylene/ jackfruit seeds flour blends |
| title_sort |
effects of cobalt stearate on the properties of compatibilized low density polyethylene/ jackfruit seeds flour blends |
| granting_institution |
Universiti Malaysia Perlis (UniMAP) |
| granting_department |
School of Bioprocess Engineering |
| url |
http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78180/5/Page%201-24%20%28Santhiya%29.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78180/2/Full%20text.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78180/3/Declaration%20Form.pdf |
| _version_ |
1776104282770112512 |