Metathesized palm oil polyol for the preparation of improved bio-based rigid and flexible polyurethane foams

2016 ◽  
Vol 83 ◽  
pp. 568-576 ◽  
Author(s):  
Prasanth K.S. Pillai ◽  
Shaojun Li ◽  
Laziz Bouzidi ◽  
Suresh S. Narine
Keyword(s):  
Palm Oil ◽  
Polyurethane Foams ◽  
Flexible Polyurethane

Preparation and Characterization of Flexible Polyurethane Foams from Palm Oil-Based Polyol

2014 ◽  
Vol 911 ◽  
pp. 352-356 ◽  
Author(s):  
Duangphon Lumcharoen ◽  
Onusa Saravari
Keyword(s):  
Palm Oil ◽  
Polyurethane Foams ◽  
Toluene Diisocyanate ◽  
Indentation Hardness ◽  
Deflection Coefficient ◽  
Flexible Polyurethane ◽  
Polyether Polyol ◽  
Opposite Tendency ◽  
Pu Foams

Flexible polyurethane (PU) foams were prepared by replacing commercial petroleum-based polyether polyol with palm oil-based polyol up to 50 wt%. Palm oil was converted to polyol by transesterification reaction with glycerol using calcium oxide as a catalyst. PU foams were then prepared from reaction between mixtures of palm oil-based polyol and petrochemical polyols with toluene diisocyanate (TDI) using water as blowing agent. The morphology and physical-mechanical properties including apparent density, indentation hardness, compressive deflection coefficient or support factor, tensile strength, and tear strength of the prepared foams were characterized and compared to those of reference foam prepared using only conventional petrochemical polyols. Scanning electron microscopy (SEM) indicated that the cellular structures of all the prepared foams were semi-open and the cell size decreased with higher amount of palm oil-based polyol. The apparent densities and the compressive deflection coefficient of the PU foams increased with the increasing amount of palm oil-based polyol, while the indentation hardness showed the opposite tendency. Furthermore, the obtained foam modified with palm oil-based polyol of 20 wt% were found to have the highest tensile and tear strengths.

Flexible polyurethane foams synthesized with palm oil-based bio-polyols obtained with the use of different oxirane ring opener

2018 ◽  
Vol 115 ◽  
pp. 69-77 ◽  
Author(s):  
Aleksander Prociak ◽  
Elżbieta Malewska ◽  
Maria Kurańska ◽  
Szymon Bąk ◽  
Paulina Budny
Keyword(s):  
Palm Oil ◽  
Polyurethane Foams ◽  
Oxirane Ring ◽  
Flexible Polyurethane

In situ monitoring of isophorone diisocyanate-based flexible polyurethane foams formation

2016 ◽  
Vol 54 (1) ◽  
pp. 37-52 ◽  
Author(s):  
I Eceiza ◽  
L Irusta ◽  
A Barrio ◽  
MJ Fernández-Berridi
Keyword(s):  
Foam Height ◽  
Polyurethane Foams ◽  
In Situ Monitoring ◽  
Generation Process ◽  
Isophorone Diisocyanate ◽  
Experimental Conditions ◽  
Foaming Process ◽  
Foam Generation ◽  
Flexible Polyurethane

Novel isophorone diisocyanate-based flexible polyurethane foams were prepared by the one-step method in a computerized foam qualification system (FOAMAT). The experimental conditions to obtain this type of foams, in relation to the nature and concentration of catalysts as well as the reaction temperature, were established as no data were available in scientific literature. The chemical reactions occurring during the foam generation process were monitored in situ by attenuated total reflectance-FTIR spectroscopy. The kinetics of the foam generation was fitted to an nth order model and the data showed that the foaming process adjusted to a first-order kinetics. The physical changes as pressure, foam height, and dielectric polarization were monitored by the FOAM software (FOAMAT). According to these parameters, the foaming process was divided into four steps: bubble growth, bubble packing, cell opening, and final curing.

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