Preparation and characterization of polyurethane foams using a palm oil-based polyol

Tanaka, Ryôhei; Hirose, Satoshi; Hatakeyama, Hyōe

doi:10.1016/j.biortech.2007.07.007

Cited by 173 publications

(110 citation statements)

References 15 publications

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“…Generally, the mechanism of polyurethane thermal degradation is rather complicated due to the complex structure of the material. For all samples, the values of the initial temperature of degradation corresponding to 2 and 5 wt% mass loss were in the range of 188-259°C, which is related to the initial stage of polyurethane degradation, involving the decomposition of less stable groups such as, biuret, alophanate and urethane (Lee et al 2002;Somania et al 2003;Tanaka et al 2008). The consecutive steps of degradation consisted of the decomposition of long polyol chains, and were relatively slower than the first step (Cervantes-Uc et al 2009).…”

Section: Mechanical and Thermal Properties Of Analyzed Polyurethanesmentioning

confidence: 93%

Biopolyols obtained via crude glycerol-based liquefaction of cellulose: their structural, rheological and thermal characterization

et al. 2016

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In this work lignocellulose biomass liquefaction was used to produce biopolyols suitable for the manufacturing of rigid polyurethane foams. In order to better evaluate the mechanism of the process, pure cellulose was applied as a raw material. The effect of time and temperature on the effectiveness of liquefaction and the parameters of resulting biopolyols were characterized. The prepared materials were analyzed in terms of their chemical structure, rheology, thermal and oxidative stability, and basic physical and mechanical properties that are important from the point of view of polyurethane manufacturing. The optimal parameters for the biopolyol production with a 94 % yield were achieved at 150°C for a 6-h reaction duration. The obtained polyols were characterized by the hydroxyl number of 643 mg KOH/g and enhanced thermal and oxidative stability compared to the polyols obtained at lower temperatures, which is associated with the altered mechanism of liquefaction. The results of rheological tests, analyzed with the use of Ostwald-de Waele and Herschel Bulkley models, revealed that the prepared biopolyols can be classified as pseudoplastic fluids with the viscosity values similar to those of commercially available products. Rigid foams obtained via partial substitution of petrochemical polyol with prepared biobased one were characterized by slightly increased apparent density and average cell size comparing to unmodified materials. The best mechanical performance was observed for the sample containing 35 wt% of biopolyol in the polyol mixture, which indicates a synergistic effect between the applied polyols. The applied modification delayed thermal degradation of foams due to changes in thermal decomposition process. In conclusion, the presented work confirms that lignocellulose biomass liquefaction can be successfully applied as a manufacturing method of polyols later used in the production of polyurethanes.

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Section: Mechanical and Thermal Properties Of Analyzed Polyurethanesmentioning

confidence: 93%

Biopolyols obtained via crude glycerol-based liquefaction of cellulose: their structural, rheological and thermal characterization

et al. 2016

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“…The absorption bands at 2850-2930 cm 1 were attributed to the symmetric and non-symmetric stretching of the aliphatic C-H of polyols, whereas a small absorption peak was observed at 3008 cm 1 soya-polyol and 3010 cm . These peaks suggest that urethane groups are formed by the reaction of MDI with polyols 18 .…”

Section: Characterizationmentioning

confidence: 98%

Structure-Property Studies of Thermoplastic and Thermosetting Polyurethanes Using Palm and Soya Oils-Based Polyols

Mohammed¹,

Al-Mulla²,

Kadar³

et al. 2013

J. Oleo Sci.

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“…Palm oil is a readily available renewable agricultural raw material, which can be used for the synthesis of polyols suitable for the preparation of flexible or semi-rigid PUR foams [16,17]. Analysis of the content of unsaturated bonds in various oils confirmed that palm oil is a convenient raw material for the synthesis of the polyols with low and medium content of hydroxyl groups [16].…”

Section: Introductionmentioning

confidence: 99%

Influence of Palm Oil-Based Polyol on the Properties of Flexible Polyurethane Foams

2011

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This paper describes the effect of the modification of polyurethane system with palm oil-based polyol on the cell structure and physical-mechanical properties of polyurethane foams. Flexible polyurethane foams were prepared by substituting a part of petrochemical polyether-polyol with the palm oil polyol. Selected physical-mechanical properties of these foams were examined and compared to the properties of reference foam. The properties such as apparent density, tensile strength, elongation at break, resilience, compressive stress and thermal stability were analyzed. It was found that the modifications of polyurethane formulation with palm oil polyol allow to improve selected properties of final products.

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Preparation and characterization of polyurethane foams using a palm oil-based polyol

Cited by 173 publications

References 15 publications

Biopolyols obtained via crude glycerol-based liquefaction of cellulose: their structural, rheological and thermal characterization

Biopolyols obtained via crude glycerol-based liquefaction of cellulose: their structural, rheological and thermal characterization

Structure-Property Studies of Thermoplastic and Thermosetting Polyurethanes Using Palm and Soya Oils-Based Polyols

Influence of Palm Oil-Based Polyol on the Properties of Flexible Polyurethane Foams

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