The Effect Of Chemically Modified Lignin As A Filler In Ultraviolet Curable Resin System

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dc.contributor.authorKoay, Ee Ling
dc.date.accessioned2018-08-15T02:12:14Z
dc.date.available2018-08-15T02:12:14Z
dc.date.issued2011-06
dc.description.abstractAlcell lignin was used as filler and reactive component in a ultraviolet (UV) curable system. In the preliminary study, different parameters have been used such as type of photoinitiator, percentage of photoinitiators and to determine suitable photoinitiator in the presence of lignin. The results showed gel content of the film of free radical photoinitiator has higher efficiency than cationic photoinitiator. Subsequently, the effect of lignin content in UV curable system was studied. The results indicated that the hardness of film increase as the lignin content was increased to the optimum point (10%), after which it decreased. This phenomenon may due to the insufficient resin or oligomer to act as matrix to hold the lignin as filler in the system. In order to enhance the interfacial of lignin and matrix of resin, chemical modification of lignin has been carried out with glycidyl methacrylate (GMA) and ally glycidyl ether (AGE). The result indicated that the increase the ratio of the reactant to lignin could increased WPG. It can be said that interaction between lignin and reactant has occurred and more unsaturated groups have been added in lignin molecule. Iodine number determination of modified lignin was carried out the similar trends observed with WPG result. The effect of lignin as filler and reactive component in ultraviolet curable resin systems were investigated by tensile strength, tensile modulus, elongation at break, gel content, pendulum hardness, cross hatch adhesion, abrasion resistance and Fourier transform infrared spectroscopy (FTIR). In addition to that, weight percentage gain (WPG) and iodine number was used to study the modification effect of lignin.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/6311
dc.language.isoenen_US
dc.publisherUniversiti Sains Malaysiaen_US
dc.subjectThe effect of lignin contenten_US
dc.subjectin UV curable systemen_US
dc.titleThe Effect Of Chemically Modified Lignin As A Filler In Ultraviolet Curable Resin Systemen_US
dc.typeThesisen_US
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