Synthesis, characterization and properties of the new unsaturated polyester resins for composite applications

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dc.contributor.authorMohammad, Noorshashillawati Azura
dc.date.accessioned2014-11-18T07:47:29Z
dc.date.available2014-11-18T07:47:29Z
dc.date.issued2007
dc.descriptionMasteren_US
dc.description.abstractCurrently the unsaturated polyester resin is an important matrix resins for thermosetting polymer composites. Major objectives of this study were to synthesis and characterize new unsaturated polyester resins for composite applications. Two types of new unsaturated polyester resins were synthesized based on Bis-(2-hydroxyethyl) fumarate (I) and Bis-(6-hydroxyhexyl) fumarate (II). Bis-(2-hydroxyethyl) fumarate (I) and Bis-(6-hydroxyhexyl) fumarate (II) were synthesized from ethylene glycol and 1, 6-hexanediol with fumaric acid in the presence of p-toluene sulfonic acid as catalyst. The chemical structures were confirmed by CHN analyses, FT-IR and 1H-NMR spectroscopy. New unsaturated polyesters were carried out by the condensation reaction between terepthaloyl chloride and the monomer I and II. The chemical structures of this polymer were confirmed by CHN analyses, FT-IR, 1H-NMR, thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). New oil palm empty fruit bunches (OPEFB) reinforced polyester composite derived from the new unsaturated polyester resins containing bis-(2-hydroxyethyl) fumarate and bis- (6-hydroxyhexyl) fumarate were prepared. The mechanical and physical properties such as tensile, flexural, impact properties and water absorption of OPEFB reinforced polyester composite were also studied. In general, the results showed that the new polyester reinforced OPEFB composite exhibits highest mechanical properties as compared to commercial polyester reinforced OPEFB composites.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/577
dc.language.isoenen_US
dc.subjectScienceen_US
dc.subjectunsaturated polyesteren_US
dc.subjectresinsen_US
dc.subjectcomposite applicationsen_US
dc.titleSynthesis, characterization and properties of the new unsaturated polyester resins for composite applicationsen_US
dc.typeThesisen_US
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