Effects Of Hybridization Of Graphene Oxide And Halloysite Nanoclay On The Oil Absorption Of Polyurethane Nanocomposite Foams

• Main Author: Cheng, Wen Cai
• Format: Monograph
• Language: English
• Published: Universiti Sains Malaysia 2022
• Subjects: T Technology; TN Mining Engineering. Metallurgy
• Online Access: http://eprints.usm.my/56739/1/Effects%20Of%20Hybridization%20Of%20Graphene%20Oxide%20And%20Halloysite%20Nanoclay%20On%20The%20Oil%20Absorption%20Of%20Polyurethane%20Nanocomposite%20Foams_Cheng%20Wen%20Cai.pdf; http://eprints.usm.my/56739/
• Institution: Universiti Sains Malaysia

This present study is aimed at determining the effect of halloysite nanoclay (HNC), graphene oxide (GO) and nanofiller hybrid (HNC/GO) on the properties and oil absorption behaviour of polyurethane (PU) nanocomposite foams. The loading of the HNC and GO is 0.3, 0.6, 0.9, and 1.2 phr. The PU nanocomposite foams were characterised using oil absorption test, density tests, compression tests, and scanning electron microscopy (SEM). The SEM images show that the pore size of the PU foams decreases when HNC or GO are introduced into the formulation. The density of PU/HNC and PU/GO increases as the filler loading increases. PU/HNC nanocomposite foam shows an increment of compressive strength until 0.9 phr and a slight decrease at 1.2 phr, while PU/GO shows the highest compressive stress at 0.3 phr and the compressive stress drops as filler loading increases. The oil adsorption of the PU nanocomposite foam was increased by adding HNC or GO. The hybridization of the HNC and GO is based on the consideration of foamability, compressive strength, and oil absorption capacity. The PU/HNC-0.3/GO-0.3 exhibited good compressive strength (0.019MPa) and oil absorption capacity (432.395%). From the absorption kinetics study, it was found that the oil absorption of the PU nanocomposite foams fit well with the pseudo-second-order kinetic model, indicating that chemisorption happens between the oil and the PU nanocomposite foam.