Synthesis and Characterization of Polyurethanes Made from Copolymers of Epoxidized Natural Oil and Tetrahydrofuran

Hoong, Seng Soi; Yeong, Shoot Kian; Hassan, Hamimah; Din, Ahmad; Choo, Yuen May

doi:10.5650/jos.ess14143

Cited by 5 publications

(2 citation statements)

References 15 publications

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“…Hoong et al reported on the preparation of high molecular weight polyols by cationic ring-opening copolymerization of epoxidized natural oils (ENO) with tetrahydrofuran (THF). 168 Epoxidation of the respective natural oils resulted in epoxidized methyl oleate (EMO), epoxidized soyabean oil (ESO), epoxidized cocoa butter (ECB), and epoxidized palm oil (EPO). Polyols were produced from the copolymerization of the respective epoxidized natural oil with THF.…”

Section: Miscellaneous Polymersmentioning

confidence: 99%

Recent advances in synthesis of polymers based on palm oil and its fatty acids

Stavila¹,

Yuliati²,

Adharis

et al. 2023

RSC Adv.

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Section: Miscellaneous Polymersmentioning

confidence: 99%

Recent advances in synthesis of polymers based on palm oil and its fatty acids

Stavila¹,

Yuliati²,

Adharis

et al. 2023

RSC Adv.

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“…Polyol can be synthesized from several epoxidized natural oils, such as epoxidized methyl oleate, epoxidized cocoa butter, epoxidized palm olein, and epoxidized soybean. Polyols were produced through a copolymerization reaction between the epoxidized oils and tetrahydrofuran with a Lewis acid catalyst (Hoong et al, 2015). Mohammed et al (2013) synthesized polyols by reacting palm oil and soybean oil with glycerol.…”

Section: Introductionmentioning

confidence: 99%

Hydroxylation Kinetics of Epoxidized Tung Oil Using Methanol as Nucleophilic Agent

Budiyati¹,

Rochmadi²,

Budiman³

et al. 2023

IJTech

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The synthesis of vegetable oil-based polyols has been carried out through the epoxidation-hydroxylation process. However, Tung oil has never been explored in the process, even though Tung oil has a high double bond. Epoxidized Tung Oil (ETO) with oxirane numbers of 3.92 to 4.04 mmol/g were hydroxylated with methanol and catalyzed by Sulfuric Acid (H2SO4). The objective of this study is to produce polyols from ETO and to evaluate the influence of temperature and catalyst concentration on the hydroxylation process. A second-order reaction kinetic study was also developed to represent the reaction. The ETO hydroxylation was carried out in a batch reactor for four hours. The reaction rate was determined based on the concentration of ETO (oxirane number) and Hydroxyl Value (OHV). The result shows that temperature and catalyst concentration have a directly proportional correlation to OHV and are inversely proportional to the concentration of ETO (epoxy). For temperatures above 40°C, the decreasing rate of the epoxy concentration at the beginning was relatively much faster than at the end of the reaction. In the temperature variation, the highest OHV obtained was 3.70 mmolKOH/g or 207.39 mgKOH/g at 80°C. The optimum catalyst concentration obtained in this study was 3%. The evaluated kinetics model gave great results for all reaction temperatures, with the highest total SSE for epoxy concentration and OHV data fitting of 0.156 and 0.045, respectively. The calculated activation energy (Ea) was 30.41 kJ/mol and the pre-exponential factor (A) was 255.00 g.mmol -1 .min -1 .

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Molecular Weight Distribution of Low Molecular Weight Polyols Derived from Fatty Acid Methyl Esters

Noor

Ismail

Sendijarević³

et al. 2017

J Americ Oil Chem Soc

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A series of commercial polyether polyols with well‐defined molecular weights (MW) was used along with propylene glycol and dipropylene glycol as gel permeation chromatography (GPC) calibration standards to determine the MW and oligomeric composition of the synthesized low MW fatty acid methyl ester (FAME) polyols, having an MW of lower than 600 Da. This GPC analysis was compared to the one calibrated against the commercially‐available polystyrene (PS) standards and to the number‐average molecular weight (Mn) obtained via vapor pressure osmometry (VPO) technique. The MW of FAME polyols obtained with GPC calibrated against polyether polyols were closer to the Mn values obtained via VPO than the MW obtained via GPC calibrated against PS standards. Using the reliable GPC calibration, the MW distribution and the hydroxyl functionality of FAME polyols were determined with greater confidence.

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Synthesis and Characterization of Polyurethanes Made from Copolymers of Epoxidized Natural Oil and Tetrahydrofuran

Cited by 5 publications

References 15 publications

Recent advances in synthesis of polymers based on palm oil and its fatty acids

Recent advances in synthesis of polymers based on palm oil and its fatty acids

Hydroxylation Kinetics of Epoxidized Tung Oil Using Methanol as Nucleophilic Agent

Molecular Weight Distribution of Low Molecular Weight Polyols Derived from Fatty Acid Methyl Esters

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