Waterborne polyurethane dispersions synthesized from jatropha oil

Saalah, Sariah; Abdullah, Luqman Chuah; Aung, Min Min; Salleh, Mek Zah; Biak, Dayang Radiah Awang; Basri, Mahiran; Jusoh, Emiliana Rose

doi:10.1016/j.indcrop.2014.10.046

Cited by 130 publications

(64 citation statements)

References 21 publications

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“…The hard segment chain of polyurethane first is decomposed, and the decomposition temperature is between 260°C and 340°C. The decomposition temperature of soft segment chain is mainly from 340°C to 410°C . It can be seen that the thermogravimetric curves of the composites with RGO/ATP‐Fe 3 O 4 /CS are shifted to high temperature compared with pure WPU.…”

Section: Resultsmentioning

confidence: 96%

Research on WPU‐RGO/ATP‐Fe₃O₄/chitosan composites with excellent electrical and magnetic properties

Song

Zhou

et al. 2020

Polymers for Advanced Techs

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First, attapulgite-Fe 3 O 4 magnetic filler (ATP-Fe 3 O 4 ) was prepared by using a chemical precipitation method. Subsequently, graphite oxide (GO) was prepared through Hummer method, and then reduced GO (RGO) was prepared through GO reduced by chitosan (CS). Finally, a series of WPU-RGO/ATP-Fe 3 O 4 /CS composites were prepared by introduced RGO/ATP-Fe 3 O 4 /CS to waterborne polyurethane. The structure and properties were characterized by scanning electron microscopy (SEM), Fourier transform infrared (FTIR), X-ray diffraction (XRD), vibrating sample magnetometry (VSM), thermogravimetric analysis TGA, conductivity test, and tensile test. The experimental results indicated that thermal stability and tensile strength of nanocomposites were improved with the increase of the content of RGO/ATP-Fe 3 O 4 /CS. Meanwhile, with the increase of the RGO/ATP-Fe 3 O 4 /CS content, the electrical and magnetic properties of WPU-RGO/ATP-Fe 3 O 4 /CS composites were improved. When the content of RGO/ATP-Fe 3 O 4 /CS was 8 wt%, the electrical conductivity and the saturation magnetic strength of WPU-RGO/ATP-Fe 3 O 4 /CS composites were 3.

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Section: Resultsmentioning

confidence: 96%

Research on WPU‐RGO/ATP‐Fe₃O₄/chitosan composites with excellent electrical and magnetic properties

Song

Zhou

et al. 2020

Polymers for Advanced Techs

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“…Depending on the application, vegetable oil-based polyols with relatively high OH numbers are generally desired for production of rigid polyurethane [ 19 ]. However, polyols with low OH numbers are advantageous in terms of bio-based content, as they require less diisocyanate as a hard segment in the polyurethane [ 20 ]. The combination of the OH numbers and hard segment content was reported as a key role in controlling the structure and the thermophysical and mechanical properties of the polyurethane film [ 16 , 17 , 18 , 19 , 20 ].…”

Section: Resultsmentioning

confidence: 99%

Physicochemical Properties of Jatropha Oil-Based Polyol Produced by a Two Steps Method

et al. 2017

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A low cost, abundant, and renewable vegetable oil source has been gaining increasing attention due to its potential to be chemically modified to polyol and thence to become an alternative replacement for the petroleum-based polyol in polyurethane production. In this study, jatropha oil-based polyol (JOL) was synthesised from non-edible jatropha oil by a two steps process, namely epoxidation and oxirane ring opening. In the first step, the effect of the reaction temperature, the molar ratio of the oil double bond to formic acid, and the reaction time on the oxirane oxygen content (OOC) of the epoxidised jatropha oil (EJO) were investigated. It was found that 4.3% OOC could be achieved with a molar ratio of 1:0.6, a reaction temperature of 60 °C, and 4 h of reaction. Consequently, a series of polyols with hydroxyl numbers in the range of 138–217 mgKOH/g were produced by oxirane ring opening of EJOs, and the physicochemical and rheological properties were studied. Both the EJOs and the JOLs are liquid and have a number average molecular weight (Mn) in the range of 834 to 1457 g/mol and 1349 to 2129 g/mol, respectively. The JOLs exhibited Newtonian behaviour, with a low viscosity of 430–970 mPas. Finally, the JOL with a hydroxyl number of 161 mgKOH/g was further used to synthesise aqueous polyurethane dispersion, and the urethane formation was successfully monitored by Fourier Transform Infrared (FTIR).

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“…In recent years, a variety of methods to obtain polyols from plant oils have been studied, including: epoxidation and oxirane ring-opening [2,4,[26][27][28][29][30][31][32][33][34][35][36][37][38]; hydroformylation and hydrogenation [2,4,16,36,37,39]; ozonolysis [2,4,16,36,37]; air oxidation [16,40]; dihydroxylation [16]; thiol-ene coupling [4,19,37,[41][42][43]; transesterification and transamidation [4,20,[26][27][28]37,38,44,45], and photochemical epoxidation (Schenck-ene reaction) [46][47][48]. However, nearly all of the published papers about polyol synthesis from plant oils are focused just on low or medium functionality/hydroxyl value polyol synthesis.…”

Section: Introductionmentioning

confidence: 99%

High Functionality Bio-Polyols from Tall Oil and Rigid Polyurethane Foams Formulated Solely Using Bio-Polyols

et al. 2020

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High-quality rigid polyurethane (PU) foam thermal insulation material has been developed solely using bio-polyols synthesized from second-generation bio-based feedstock. High functionality bio-polyols were synthesized from cellulose production side stream—tall oil fatty acids by oxirane ring-opening as well as esterification reactions with different polyfunctional alcohols, such as diethylene glycol, trimethylolpropane, triethanolamine, and diethanolamine. Four different high functionality bio-polyols were combined with bio-polyol obtained from tall oil esterification with triethanolamine to develop rigid PU foam formulations applicable as thermal insulation material. The developed formulations were optimized using response surface modeling to find optimal bio-polyol and physical blowing agent: c-pentane content. The optimized bio-based rigid PU foam formulations delivered comparable thermal insulation properties to the petro-chemical alternative.

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Waterborne polyurethane dispersions synthesized from jatropha oil

Cited by 130 publications

References 21 publications

Research on WPU‐RGO/ATP‐Fe₃O₄/chitosan composites with excellent electrical and magnetic properties

Research on WPU‐RGO/ATP‐Fe₃O₄/chitosan composites with excellent electrical and magnetic properties

Physicochemical Properties of Jatropha Oil-Based Polyol Produced by a Two Steps Method

High Functionality Bio-Polyols from Tall Oil and Rigid Polyurethane Foams Formulated Solely Using Bio-Polyols

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Waterborne polyurethane dispersions synthesized from jatropha oil

Cited by 130 publications

References 21 publications

Research on WPU‐RGO/ATP‐Fe3O4/chitosan composites with excellent electrical and magnetic properties

Research on WPU‐RGO/ATP‐Fe3O4/chitosan composites with excellent electrical and magnetic properties

Physicochemical Properties of Jatropha Oil-Based Polyol Produced by a Two Steps Method

High Functionality Bio-Polyols from Tall Oil and Rigid Polyurethane Foams Formulated Solely Using Bio-Polyols

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Research on WPU‐RGO/ATP‐Fe₃O₄/chitosan composites with excellent electrical and magnetic properties

Research on WPU‐RGO/ATP‐Fe₃O₄/chitosan composites with excellent electrical and magnetic properties