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

BioResources

卷:9

Todd F. Shupe¹  Jinqiu Qi²  Jiulong Xie³  Chung-Yun Hse⁴ 

[1] School of Renewable Natural Resources, Louisiana State University Agricultural Center, Baton Rouge, LA 70803 USA;

[2] College of Forestry, Sichuan Agricultural University, Yaan, Sichuan, 625014, PRC;

[3] Sichuan Agricultural University;

[4] Southern Research Station, USDA Forest Service, Pineville, LA 71360 USA;

关键词: Liquefaction;    Bamboo;    Microwave;    Polyurethane foam;    Lignin derivatives;   

DOI  :  10.15376/biores.9.1.578-588

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown