Production of rigid polyurethane foams using polyol from liquefied oil palm biomass: Variation of isocyanate indexes

Umar Adli, Amran and Kushairi, Mohd Salleh and Sarani, Zakaria and Rasidi, Roslan and Chin, Hua Chia and Sharifah Nabihah, Syed Jaafar and Mohd Shaiful, Sajab and Marhaini, Mostapha (2021) Production of rigid polyurethane foams using polyol from liquefied oil palm biomass: Variation of isocyanate indexes. Polymers, 13 (18). pp. 1-20. ISSN 2073-4360. (Published)

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Development of polyurethane foam (PUF) containing bio-based components is a complex process that requires extensive studies. This work reports on the production of rigid PUFs from polyol obtained via liquefaction of oil palm empty fruit bunch (EFB) biomass with different isocyanate (NCO) indexes. The effect of the NCO index on the physical, chemical and compressive properties of the liquefied EFB-based PUF (EFBPUF) was evaluated. The EFBPUFs showed a unique set of properties at each NCO index. Foaming properties had affected the apparent density and cellular morphology of the EFBPUFs. Increasing NCO index had increased the crosslink density and dimensional stability of the EFBPUFs via formation of isocyanurates, which had also increased their thermal stability. Combination of both foaming properties and crosslink density of the EFBPUFs had influenced their respective compressive properties. The EFBPUF produced at the NCO index of 120 showed the optimum compressive strength and released the least toxic hydrogen cyanide (HCN) gas under thermal degradation. The normalized compressive strength of the EFBPUF at the NCO index of 120 is also comparable with the strength of the PUF produced using petrochemical polyol.

Item Type: Article
Additional Information: Indexed by Scopus
Uncontrolled Keywords: Cellular polymer; Compressive; Empty fruit bunch; Liquefaction; Polyol
Subjects: Q Science > QD Chemistry
T Technology > TP Chemical technology
Faculty/Division: Faculty of Industrial Sciences And Technology
Depositing User: Mrs Norsaini Abdul Samat
Date Deposited: 10 Jan 2022 00:56
Last Modified: 10 Jan 2022 00:56
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