Development Of New Organic Wood Paints With Lignin As Additive

Mustapha, Asniza (2011) Development Of New Organic Wood Paints With Lignin As Additive. Masters thesis, Universiti Sains Malaysia.

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Lignin has been used as additive in preparation of the new organic paints. Soda lignin was extracted from black liquor of soda-AQ (anthraquinone) pulping of oil palm empty fruit bunch (EFB) fibers by 20% sulfuric acid precipitation. Two different types of azo pigment namely, phenyl-azo-2-naphthol and 4-Hydroxyphenylazo-3-N-(4-hydroxyphenyl)maleimide were synthesized by azo coupling reaction. Phenyl-azo-2-naphthol which was represented as aromatic azo pigment was produced from the reaction of diazonium salt (phenyldiazonium chloride) with pure 2-naphthol as the coupling agent whereas a new heterocyclic coupling agent namely, N-(4-hydroxy-phenyl)maleimide was synthesized by the reaction of maleic anhydride and p-aminophenol in the presence of di-phosphorus pentoxide (P2O5) as a catalyst.

Item Type: Thesis (Masters)
Subjects: T Technology > T Technology (General) > T1-995 Technology(General)
Divisions: Pusat Pengajian Teknologi Industri (School of Industrial Technology) > Thesis
Depositing User: ASM Ab Shukor Mustapa
Date Deposited: 27 Aug 2018 02:43
Last Modified: 12 Apr 2019 05:26

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