Synthesis And Properties Of Highly Cross-Linked Polysiloxane For LED Encapsulant

Looi, Yien Tyng (2012) Synthesis And Properties Of Highly Cross-Linked Polysiloxane For LED Encapsulant. Masters thesis, Universiti Sains Malaysia.

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The research focuses on the synthesis of two series of polysiloxane. The first series (S1) is hydrosilyl-terminated polydimethylsiloxane (HTP) that was cured with 2,4,6,8-tetramethyl-2,4,6,8-tetravinyl cyclotetrasiloxane (D4V) and second series (S2) is the incorporation of octaphenylcyclotetrasiloxane (P4) into first series. The polymers of both series underwent thermal curing. UV curing was performed on the first series to improve the curing time as well as comparing their properties. The polysiloxanes product was a water clear gel form. The elastomeric feature of series S1 was dependent on the end-capper concentration, 1,1,3,3- tetramethyldisiloxane while series S2 was dependent on the amount of phenyl group of octaphenylcyclotetrasiloxane (P4) employed during its synthesis. FTIR and NMR was used to confirm the functional group of HTP and completion of the hydrosilylation reaction.

Item Type: Thesis (Masters)
Subjects: T Technology > TN Mining Engineering. Metallurgy > TN1-997 Mining engineering. Metallurgy
Divisions: Kampus Kejuruteraan (Engineering Campus) > Pusat Pengajian Kejuruteraan Bahan & Sumber Mineral (School of Material & Mineral Resource Engineering) > Thesis
Depositing User: ASM Ab Shukor Mustapa
Date Deposited: 03 Jul 2019 01:30
Last Modified: 03 Jul 2019 01:30

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