CHEMICAL TREATMENTS OF BAGASSE NATURAL FIBRE AND APPLICATION FOR USE AS FILLER IN UNSATURATED POLYESTER COMPOSITE

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dc.contributor.authorOMOLE, Josephine Taiye
dc.date.accessioned2016-06-30T10:32:59Z
dc.date.available2016-06-30T10:32:59Z
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 OF SCIENCE DEGREE IN TEXTILE SCIENCE AND TECHNOLOGY DEPARTMENT OF TEXTILE SCIENCE AND TECHNOLOGY, FACULTY OF SCIENCES, AHMADU BELLO UNIVERSITY, ZARIA, NIGERIA.en_US
dc.description.abstractThis work has investigated the effect of various chemical treatments on the properties of bagasse fibre for use as filler in unsaturated polyester composite. Bagasse is a natural fibre obtained as a by-product of the sugarcane milling process. As with other natural fibres it has the setback of being hydrophilic; this research tried to explore the use of chemical modification of the fibre surface as a way of remedy. Four different chemicals, namely, Sodium hydroxide, Acetic acid, Acrylic acid and Potassium permanganate were used in carrying out the treatments. Mechanical properties such as tensile strength and modulus, flexural strength and modulus were carried out. The treatments were carried out for 3hours at 70oC except for Sodium hydroxide treatment that was done at room temperature using 2wt% concentration. The Fourier Transform Infrared Spectroscopy (FTIR) analysis of the fibre revealed that the Potassium permanganate treatment had more effect as most of the OH group visible at a peak of around 3400cm-1 were reduced. Also the peaks showing lignin, pectin, and hemicelluose at peaks of 1250-1260cm-1, 1600-1650cm-1, and 1720-1750cm-1 respectively were also removed which were all present in the untreated fibre. The Scanning Electron Microscope (SEM) studies of Potassium permanganate treated fibre composite revealed the roughness of the fibre increased as a result of the various chemicals which also showed that Potassium permanganate treated fibre became rougher as compared to the untreated fibre and also had more micropores. The tensile strength of Potassium permanganate treated fibre composite was found to be 77.85MPa as compared to 68.50MPa of the untreated fibre composite. The water absorption level was found to be lower at 2.2% maximum than the untreated fibre composite except for the unsaturated polyester composite which is as expected and was at an average of 5%. The hardness and impact strength were also improved for all chemically treated samples. However, in the case of flexural strength not much effect was seen and in fact the flexural modulus of KMnO4 treated fibre composite dropped to vi 21.1MPa and NaOH treated fibre composite was 25.60MPa, Acetic acid (CH3COOH) treated fibre composite 20.91MPa and CH2=CHCO2H treated fibre composite 15.90MPa, all of which were lower than the untreated fibre composite. SEM studies on the composites indicated that higher interaction was found in KMnO4 treated fibre composite although little debonding was observed.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/8036
dc.language.isoenen_US
dc.subjectCHEMICAL TREATMENTS,en_US
dc.subjectBAGASSE NATURAL FIBRE,en_US
dc.subjectAPPLICATION,en_US
dc.subjectUSE,en_US
dc.subjectFILLER,en_US
dc.subjectUNSATURATED POLYESTER COMPOSITE,en_US
dc.titleCHEMICAL TREATMENTS OF BAGASSE NATURAL FIBRE AND APPLICATION FOR USE AS FILLER IN UNSATURATED POLYESTER COMPOSITEen_US
dc.typeThesisen_US
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