Biobased Polyurethanes from Rapeseed Oil Polyols: Structure, Mechanical and Thermal Properties

Stirna, U. K.; Fridrihsone, Anda; Lazdiņa, Brigita; Misane, M. M.; Vilsone, Dzintra

doi:10.1007/s10924-012-0560-0

Cited by 56 publications

(31 citation statements)

References 23 publications

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“…The darker color residue at the bottom of sample 5 tube (RO/TEA polyol) is glycerol, which forms as a byproduct during RO/TEA polyol synthesis. We have also reported this previously [11].…”

Section: Polyols Compatibility With Physical Blowing Agentssupporting

confidence: 61%

“…The molar ratio was 1 M of RO to 2.9 M of TEA. A more detailed description of RO polyol synthesis is given in our previous work, Stirna et al [11]. The end of the reaction was tested by the solubility of the obtained product in ethanol at the volume ratio (resin:ethanol = 1:1).…”

Section: Synthesis Of Ro/pet Polyolsmentioning

confidence: 99%

“…To compare RO/PET polyols with vegetable oil based polyol, RO/TEA polyol was also synthesized as described above (first step of synthesis) and in our previous paper by Stirna et al [11]. Also, commercial polyol NEO based on industrial PET scrap was chosen.…”

Section: Synthesis Of Ro/pet Polyolsmentioning

confidence: 99%

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Polyols from recycled poly(ethylene terephthalate) flakes and rapeseed oil for polyurethane foams

et al. 2015

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Bio/recycled polyols from rapeseed oil (RO) and poly(ethylene terephthalate) (PET) were prepared using a continuous, two-step synthesis method. The bio/recycled polyol properties were compared to RO and commercially available PET based polyols. Rigid polyurethane foams with a unified apparent density of 40-45 kg/m 3 were prepared from these polyols. The thermal conductivity, thermal properties, water absorption and mechanical properties of foams were tested. The results indicated that the RO/PET polyols can be successfully used for preparing polyurethane foams as energy efficient thermal insulation material.

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“…The darker color residue at the bottom of sample 5 tube (RO/TEA polyol) is glycerol, which forms as a byproduct during RO/TEA polyol synthesis. We have also reported this previously [11].…”

Section: Polyols Compatibility With Physical Blowing Agentssupporting

confidence: 61%

Section: Synthesis Of Ro/pet Polyolsmentioning

confidence: 99%

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Polyols from recycled poly(ethylene terephthalate) flakes and rapeseed oil for polyurethane foams

et al. 2015

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“…Polyols that are reacted with different diisocyanates to obtain PUs, are derived mostly from petrochemical products but can be replaced by renewable materials. Therefore, polyurethanes have been synthesized from bio‐polyols derived from vegetable oils obtained from various plant seeds such as castor bean , cotton, rapeseed , jatropha, palm , soybean , and sunflower .…”

Section: Introductionmentioning

confidence: 99%

Composites made from a soybean oil biopolyurethane and cellulose nanocrystals

Mucci

Ivdre

Buffa

et al. 2017

Polymer Engineering & Sci

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Cellulose nanocrystals (CNC) obtained by acidic hydrolysis from microcrystalline cellulose were dispersed in a biopolyurethane matrix to prepare composite films. The polyurethane was prepared from a hydroxylated soybean oil (SO‐OH) and a polymeric diphenyldiisocyanate (pMDI), using a organotin compound as the catalyst. The composite films contained different concentrations of nanocelullose, without any macroscopic aggregates in all cases. Thermal, tensile and dynamic mechanical properties of the films were determined for all the samples. In particular, it was observed that the glass transition temperature of the nanocomposites slightly increased with the concentration of the cellulose nanocrystals. The nanocomposite with 1 wt% of nanocellulose showed the highest tensile strength of the series. POLYM. ENG. SCI., 58:125–132, 2018. © 2017 Society of Plastics Engineers

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“…The procedure of fabrication of PU and PU/OMMT nanocomposites consists in the following [29]. Specimens in the shape of thin films are prepared from an anhydrous toluene (Aldrich) 50% solution at a temperature of 25 ∘ C. First, the OMMT is dispersed in toluene by mixing it with a magnetic dissolver for about 2 h until a 5 wt.% homogeneous gel-like solution is ready.…”

Section: Preparation Of Pu and Pu/ommt Nanocompositesmentioning

confidence: 99%

Preparation and Structural Properties of Free Films from Rapeseed Oil-Based Rigid Polyurethane-Montmorillonite Nanocomposites

Gaidukov

Cābulis

Gromilova

et al. 2013

International Journal of Polymer Science

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The preparation of free standing films of biobased rigid polyurethanes (PU) from rapeseed oil (RO) and diethanolamine (DEA) polyol and its modification with organomontmorillonite (OMMT) nanoparticles are described. Heat enthalpy of the interaction duringin situmixing of RO/DEA polyol and OMMT is measured in isothermal profile. The Fourier transform infrared spectral analysis (FTIR-ATR) is used to determine the urethane group concentration and hydrogen bonds formation in PU and PU/OMMT nanocomposites. X-ray diffraction shows the formation of intercalated and exfoliated structures of OMMT. The glass-transition temperature is used to demonstrate the formation for the intercalated and exfoliated nanocomposites of an interphase with a possible compact structure and the altered polymer chain mobility. The prepared PU/OMMT nanocomposites are also characterized by the enhanced thermal degradation characteristics upon heating in air atmosphere.

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Biobased Polyurethanes from Rapeseed Oil Polyols: Structure, Mechanical and Thermal Properties

Cited by 56 publications

References 23 publications

Polyols from recycled poly(ethylene terephthalate) flakes and rapeseed oil for polyurethane foams

Polyols from recycled poly(ethylene terephthalate) flakes and rapeseed oil for polyurethane foams

Composites made from a soybean oil biopolyurethane and cellulose nanocrystals

Preparation and Structural Properties of Free Films from Rapeseed Oil-Based Rigid Polyurethane-Montmorillonite Nanocomposites

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