Polyurethane Synthesis from Sugarcane Bagasse Organosolv and Kraft Lignin

Abstract:

Sugarcane bagasse (SCB) was subjected to a single-step fractionation and hydrolysis reaction in the presence of various organic solvents. The reaction was performed at 170 °C for 3 h when sodium hydroxide was used as catalyst. The results showed that suitable solvents significantly enhanced the yield of lignin fractionation and simultaneous hydrolysis reaction took place indicated by an increase of hydroxyl groups in lignin molecules. Lignin-based polyurethane (LPU) from SCB organosolv lignin polyols had relatively better mechanical and thermal resistant properties compared to LPU from liquefied Kraft lignin from pulp and paper industry.

• Periodical: Key Engineering Materials (Volume 659)
• Pages: 527-532
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.659.527
• Online since: August 2015
• Authors: Chularat Sakdaronnarong*, Nattawee Srimarut, Navadol Laosiripojana
• Keywords: Liquefied Kraft Lignin, Organosolv Lignin, Rigid Polyurethane Synthesis, Sugarcane Bagasse

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