Hirmizi, Nor Hashila Mohd
(2011)
Synthesis, characterisation, thermal and electrical behaviour of copper and copper sulphide-epoxy nanocomposites.
Masters thesis, Universiti Sains Malaysia.
Abstract
Nanozarah kuprum (Cu) dan kuprum sulfida (CuS) disintesis di dalam fasa akueus dan serta-merta dipindahkan ke fasa organik yang mengandungi epoksi melalui kaedah pemindahan fasa. Spektrum penyerapan UV-vis menunjukkan kehadiran Cu dan CuS. Penambahan diglisidil eter bisfenol A (DGEBA) ke dalam organosol masing-masing dan setelah penyingkiran pelarut memberikan nanokomposit Cu- dan CuS-epoksi. Komposit ini dimatangkan menggunakan 4,4’-metilenadianilina (MDA). Bagi Cu-epoksi, kecekapan pemindahan zarah yang tertinggi adalah ≈ 97.2% apabila sampel disediakan menggunakan 5 mL isopropanol (IPA). IPA turut memberi kesan terhadap saiz purata zarah.
Copper (Cu) and copper sulphide (CuS) nanoparticles were synthesised in an aqueous phase and subsequently transferred into the organic phase containing epoxy via phase transfer technique. The UV-vis absorption spectra confirmed the existence of Cu and CuS. Incorporation of diglycidyl ether of bisphenol A (DGEBA) into the respective organosols and upon solvent removal afforded Cu- and CuS-epoxy nanocomposites. These composites were cured using 4,4’-methyelene-dianiline (MDA). In the case of Cu-epoxy, the highest particle transfer efficiency was at ≈ 97.2% when the samples were prepared with 5 mL isopropanol (IPA). IPA also exerts influence on the average particle size.
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