Rigid polyurethane foam based on modified vegetable oil

Veronese, Vinicius Bassanesi; Menger, Rodrigo K.; Forte, Maria Madalena de Camargo; Petzhold, César Liberato

doi:10.1002/app.33185

Cited by 105 publications

(80 citation statements)

References 77 publications

(110 reference statements)

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“…These properties results presented similar values to those reported in the literature of foams produced from castor oil polyols [16,19,26,27]. A significant decrease in the compressive strength and Young modulus of the foams were observed with the addition of the higher blowing agent amounts, which can be related with the density decreases and the cell size increase.…”

Section: Resultssupporting

confidence: 89%

“…These properties limited the use of castor oil as a raw material polyol, especially to prepare rigid polyurethane foams, and the pre-treatment reaction seems to be efficient to minimize these disadvantages. Transesterification [16,18,19,26], thio-ene [27] and amidization [28] reactions have been employed to introduce reactive OH groups in castor oil in order to produce suitable polyols to synthesize rigid polyurethane foams. .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Polyurethane Foams for Thermal Insulation Uses Produced from Castor Oil and Crude Glycerol Biopolyols

Carriço¹,

Fraga²,

Carvalho³

et al. 2017

Preprint

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Rigid polyurethane foams were synthesized using a renewable polyol from the simple physical mixture of castor oil and crude glycerol. The effect of the catalyst and blowing agent in the foams properties was evaluated. The use of physical blowing agent (cyclopentane and n-pentane) allowed obtaining foams with smaller cells in comparison with the foams produced with a chemical blowing agent (water). The increase of water content caused a decrease of density, thermal conductivity, compressive strength and Young's modulus, which indicates that the increment of CO2 production contributes to the formation of larger cells. Higher amount of catalyst in the foam formulations caused a slight density decrease and an increase small significance of thermal conductivity, compressive strength and Young's modulus values. These green foams presented properties that indicate a great potential to be used as thermal insulation, as density (23 -41 kg m -3 ), thermal conductivity (0.0128 -0.0207 W m -1 K -1 ), compressive strength (45 -188 kPa) and Young's modulus (3 -28 kPa). These biofoams are also environmental friendly alternatives and can aggregate revenue to biodiesel industry, contributing for reduction of this fuel prices.

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Section: Resultssupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Polyurethane Foams for Thermal Insulation Uses Produced from Castor Oil and Crude Glycerol Biopolyols

Carriço¹,

Fraga²,

Carvalho³

et al. 2017

Preprint

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“…The transesterification reaction of CO was performed with a polyfunctional alcohol to increase OH-functionality [32,[40][41][42]. TEOA was used as a polyfunctional alcohol to transesterify CO.…”

Section: Modification Of Co By Transesterification With Teoamentioning

confidence: 99%

Polyurethane/aromatic polyamide sulfone copolymer dispersions from transesterified castor oil

et al. 2016

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Four polyurethane/polyamide copolymer dispersions (PUCON-co-APAS) were prepared from castor oil-based polyol (CON). Castor oil (CO) was firstly transesterified with triethanolamine at 210°C for different time intervals: 30, 60, 90 and 120 min, to produce CON30, CON60, CON90 and CON120 polyols, respectively. The hydroxyl and acid values, density, viscosity, chemical structure analysis of the CON polyols were determined. The polyols were used to prepare PUCON30-co-APAS, PUCON60-co-APAS, PUCON90-co-APAS, and PUCON120-co-APAS copolymer dispersions in five steps using prepolymer self-emulsification solvent process. The first step is the prepolymer preparation step, in which CON was reacted with dimethylolpropionic acid and excess toluene diisocyanate to produce PUCON NCO . The second step is the copolymerization step, in which PUCON NCO was reacted with amino-terminated aromatic polyamide sulfone. The following processes are neutralization, chain extension and dispersion steps. The prepared copolymer dispersions were characterized using FTIR, DLS, TGA, DSC and GPC. Additionally, the physical, chemical and mechanical properties of the prepared copolymers were studied. The results showed an increase in the hydroxyl number of CON with increasing transesterification time. Stronger H-bonds and smaller particle sizes are produced using CON with higher transesterification time in the preparation of the copolymer dispersions.

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“…However, density and compressive strength were comparable or higher depending on the viscosity of soya polyol. Veronese et al . studied thermal insulation characteristics of SOP‐derived PUF and petrol polyol based PUF.…”

Section: Plant Oil Based Polyurethane Foammentioning

confidence: 99%

Recent Advancement in Plant Oil Derived Polyol‐Based Polyurethane Foam for Future Perspective: A Review

Singh

Samal

Mohanty

et al. 2019

Euro J Lipid Sci & Tech

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Polyurethane foams (PUFs) are widely used materials because of their wide range of applications, particularly, thermal and sound insulation, mattresses, furniture, construction, cushioning, packaging, transportation of goods, etc. Recently, commercial PUF products fabricated from plant oil (PO)‐based polyols have gained increasing popularity, because of their low cost and eco‐friendly nature in comparison to petroleum‐based PUF. To date, insufficient reviews have been reported in the area of modification of plant oils for synthesizing polyol for foam synthesis. Due to abundant availability, low‐cost, and renewable nature of plant oils, they are being used as precursors for modern polyurethane industry use. There is a need for versatile and economical methods for conversion of plant oils such as castor oil (CO) and soybean oil (SO) into useful polyols for industry use. This review is an overview of the most recent advanced methods for the conversion of plant oils into polyol and further utilization of it for commercial PUF products. Since the last decade, many researchers have shown that plant‐polyol‐derived PUF can compete with conventional PUF. Practical Applications: Practical applications of the PO‐based polyurethane foams include thermal insulation, sound insulation, packaging, and waste water treatment.

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Rigid polyurethane foam based on modified vegetable oil

Cited by 105 publications

References 77 publications

Polyurethane Foams for Thermal Insulation Uses Produced from Castor Oil and Crude Glycerol Biopolyols

Polyurethane Foams for Thermal Insulation Uses Produced from Castor Oil and Crude Glycerol Biopolyols

Polyurethane/aromatic polyamide sulfone copolymer dispersions from transesterified castor oil

Recent Advancement in Plant Oil Derived Polyol‐Based Polyurethane Foam for Future Perspective: A Review

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