Synthesis of novel oligomeric polyols from epoxidised methyl oleate and epoxidised palm olein for elastic polyurethane products

Hoong S. S., . and Yeong S. K., . and Zainab Idris, . Synthesis of novel oligomeric polyols from epoxidised methyl oleate and epoxidised palm olein for elastic polyurethane products. pp. 401-413. ISSN 1511-2780

Novel oligomeric polyols were synthesised from epoxidised methyl oleate (EMO) and epoxidised palm olein (EPOo) through epoxide ring opening polymerisation catalysed by boron trifluoride diethyl etherate (BF3. Et2O). The properties of these oligomeric polyols were affected by the degree of epoxide of the feedstock as well as reaction conditions (monomer concentration catalyst amount reaction temperature and duration). Gel permeation chromatography (GPC) analysis showed that the oligomeric content of the synthesised oligomeric polyols were in the range of 85 “ 90 and the number average molecular weight (Mn) of the oligomeric polyols were between 1900 Da and 16 100 Da depending on the feedstock. In addition mass spectrometry Matrix-assisted laser desorption/ionisation-time of flight (MALDI-TOF) and nuclear magnetic resonance (NMR) analyses revealed that the oligomeric polyols were dimer and higher oligomers of feedstock linked by ether groups. These oligomeric polyols have desirable low acid values which were less than 1 mg KOH g-1 and hydroxyl values in between 35 to 45 mg KOH g-1. The oligomeric polyols made from EPOo was mixed with polyethylene glycol (PEG 3350) and reacted with diisocyanate to form polyurethane (PU) sample with good elastomeric properties.

Full text available from: Official URL: http://jopr.mpob.gov.my/synthesis-of-novel-oligome...

Abstract

Novel oligomeric polyols were synthesised from epoxidised methyl oleate (EMO) and epoxidised palm olein (EPOo) through epoxide ring opening polymerisation catalysed by boron trifluoride diethyl etherate (BF3. Et2O). The properties of these oligomeric polyols were affected by the degree of epoxide of the feedstock as well as reaction conditions (monomer concentration catalyst amount reaction temperature and duration). Gel permeation chromatography (GPC) analysis showed that the oligomeric content of the synthesised oligomeric polyols were in the range of 85 “ 90 and the number average molecular weight (Mn) of the oligomeric polyols were between 1900 Da and 16 100 Da depending on the feedstock. In addition mass spectrometry Matrix-assisted laser desorption/ionisation-time of flight (MALDI-TOF) and nuclear magnetic resonance (NMR) analyses revealed that the oligomeric polyols were dimer and higher oligomers of feedstock linked by ether groups. These oligomeric polyols have desirable low acid values which were less than 1 mg KOH g-1 and hydroxyl values in between 35 to 45 mg KOH g-1. The oligomeric polyols made from EPOo was mixed with polyethylene glycol (PEG 3350) and reacted with diisocyanate to form polyurethane (PU) sample with good elastomeric properties.

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Item Type:	Article
AGROVOC Term:	Renewable resources
AGROVOC Term:	Olein
AGROVOC Term:	Epoxides
AGROVOC Term:	Polyols
AGROVOC Term:	Polymerization
AGROVOC Term:	Vegetable oils
AGROVOC Term:	Mechanical properties
AGROVOC Term:	Chemical composition
AGROVOC Term:	Heating
AGROVOC Term:	Mixing
Geographical Term:	Malaysia
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	28 Apr 2025 06:52
URI:	http://webagris.upm.edu.my/id/eprint/24143

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