1 research outputs found
Development of High Performance Polyurethane Elastomers Using Vanillin-Based Green Polyol Chain Extender Originating from Lignocellulosic Biomass
Vanillin can be obtained
from waste of lignocellulosic bioresources
with various methods.− Such vanillin was used as chain extender [divanillin-ethanol
amine conjugate (DV-EA)] after its dimerization and further modification
with ethanolamine in the synthesis of biobased polyurethane, thereby
increasing wt % of biocontents in the final polymer. 1,4-Butanediol
often used as a general chain extender in polyurethane synthesis was
replaced partially with DV-EA. The generated polyurethane hard segment
consists of DV-EA polyol and MDI (methylene diisocyanate) units or
1,4-butanediol and MDI units, respectively. The properties of the
DV-EA-based polyurethane were investigated with differential scanning
calorimetry (DSC), thermogravimetric analysis (TGA), dynamic mechanical
analyzer (DMA), X-ray diffraction spectroscopy (XRD), and universal
testing machine (UTM). The results showed that this advanced polyurethane
has 128% of Young’s modulus and 147% of increased strain compared
to those of control, while its strength and thermal stability were
maintained. It is expected that this new biobased tetraol may inspire
a new perspective of vanillin application in biobased polyurethane
synthesis