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Effect of Lignin Derivatives in the Bio-Polyols from Microwave Liquefied Bamboo on the Properties of Polyurethane Foams

Articles

Journal/Conference:

BIORESOURCES

Language:

English

Author:

Xie Jiulong; Hse ChungYun; Shupe Todd. F.

Experts:

Qi Jinqiu

Year:

2014

Volume:

9

Issue:

1

Pages:

578-588

Keywords:

Bamboo; Liquefaction; Microwave; Lignin derivatives; Polyurethane foam

Bamboo residues were subjected to a microwave-assisted liquefaction process for the production of crude bio-polyols (CBP). The fractionated bio-polyols (FBP) were obtained by the removal of lignin derivatives from the crude bio-polyols (CBP) using a simple method. Polyurethane (PU) foams were successfully prepared from both CBP and FBP. The object of this study was to evaluate the effect of lignin derivatives in bio-polyols on the physical properties, thermal stability, and microstructure of PU foams. The results revealed that the PU foam made from CBP had a higher density and superior thermal stability compared to that made from FBP; however, they were also much more fragile. Scanning electron microscope (SEM) images indicated that the lignin compounds in the CBP had impact on the structure of the PU foam.