STUDIES OF PHYSICAL AND MECHANICAL PROPERTIES OF UNSATURATED POLYESTER RESIN HYBRID COMPOSITES REINFORCED WITH JUTE FIBRE AND MAIZE COB PARTICLES

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dc.contributor.authorBABA ALI, JAMILA
dc.date.accessioned2016-06-13T09:49:03Z
dc.date.available2016-06-13T09:49:03Z
dc.date.issued2016-01
dc.descriptionA DISSERTATION SUBMITTED TO THE SCHOOL OF POSTGRADUATE STUDIES. AHMADU BELLO UNIVERSITY, ZARIA IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE AWARD OF A MASTER DEGREE IN TEXTILE SCIENCE AND TECHNOLOGY. DEPARTMENT OF TEXTILE SCIENCE AND TECHNOLOGY, FACULTY OF SCIENCES AHMADU BELLO UNIVERSITY, ZARIA NIGERIAen_US
dc.description.abstractIn this study, Jute fibre/ Unsaturated Polyester Resin and Maize Cob / Unsaturated Polyester Resin Composites were prepared. Similarly, hybrid composites of Jute fibre (JF)/Maize Cob(MC) with Unsaturated Polyester Resin(UPR) were prepared using an open molding techniques at several percentage filler loadings, 10% Maize Cob and 10% Jute fibres were employed as the percentage for composites hybridization. The Physical and Mechanical properties of the composites were studied. The Scanning Electron Microscopy of the composites was also investigated. The study reveals that, as the percentage filler loading increases, the tensile strength, elongation, impact strength, hardness and flexural strength decreases due to clumping, voids and agglomerate formation which resulted in weak bonding or poor inter facial adhesion between the fillers and the matrix. However, the hybrid composite shows moderates improvement in the mechanical properties such as tensile strength of 32.86 Mpa and elongation of 19.60 % for 5%JF/5%MC which has the highest strength compared to its control samples which has tensile strength of 12.84Mpa and elongation at break of 12.80% for 10%JF/UPR and 21.55Mpa and 16.00% for 10% MC/UPR respectively. The hybrid composite also shows moderate value of impact strength, hardness and flexural strength with 0.48J/m, 37.65 shore A and 44.79Mpa respectively for filler loading of 5%JF/5%MC and 0.35 J/m,21.17 shore A and 41.47Mpa for varying fillers of 9%JF/1%MC hybrid composite sample. The improvements are likely attributed to the extent of good intermingling between the fillers and the matrix. The study also reveals that, density of the composites decreases with increase in filler loading the density drops from 1.66 to 0.80g/cm3 for 100%UPR and 15% JF/UPR composites respectively and from 1.66 to 0.70g/cm3 for 100% UPR and 20% MC/UPR composites respectively. The hybrid composite also shows decrease in density from 1.29 to 1.00g/cm3 with varying percentage of filler loadings of 9%JF/1%MC and 7%JF/3%MC respectively. The composites shows increase in water uptake with increasing filler loading and increasing number of days up to when the samples reaches their saturation when no water absorption was observed. The results shows that the highest water absorption rate was observed at 15% filler loading of JF having maximum water absorption of 6.4% and 3% for 20% MC and a maximum of 2.3% for hybrid composites. SEM analysis shows good interfacial interaction between the fillers and the matrix, random filler dispersion within the matrix and formation of few noticeable voids which could be due to air trapped during the composites fabrication and cracks along filler matrix interface which has effect in the mechanical properties of the composites samples. The mechanical and physical properties of the composites indicate that it can be useful in application which required moderate strength. These composites could be considered as a potential source of utilizing agricultural waste materials and as sustainable resources for manufacturing of structural materials such as particle board, fibre board, stores and library shelf‘s, partitioning panels, ceiling boards thereby reducing the amount of agricultural wastes and eliminating the pollution caused by burning of such residue (Maize Cob) and in turns adding value to Jute fibre.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/7995
dc.language.isoenen_US
dc.subjectSTUDIES,en_US
dc.subjectPHYSICAL,en_US
dc.subjectMECHANICAL PROPERTIES,en_US
dc.subjectUNSATURATED POLYESTER RESIN HYBRID COMPOSITES REINFORCED,en_US
dc.subjectJUTE FIBRE,en_US
dc.subjectMAIZE COB PARTICLES,en_US
dc.titleSTUDIES OF PHYSICAL AND MECHANICAL PROPERTIES OF UNSATURATED POLYESTER RESIN HYBRID COMPOSITES REINFORCED WITH JUTE FIBRE AND MAIZE COB PARTICLESen_US
dc.typeThesisen_US
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