LAUSR

A simple oriented liquefaction with microwave assistance was introduced to produce phenolic compounds and cellulose nanofibers from the comprehensive utilization of biomass. Effects of process parameters on the yield and composition of liquefied straw products were investigated. Liquefied products was separated into liquid and solid products. The highest phenolics content (72.87%) in liquid products was achieved; the yield of nanofibers from liquefied solid products was 47.43 wt %. With stepwise extraction, phenolics with nice reactivity were largely separated into three fractions. They were mainly composed of phenolic compounds and aromatic derivatives and had good solubility in organic solvents. After a chemical-purified treatment, solid products containing highly crystalline cellulose were converted into nanofibers with good application. These simple processes achieve a comprehensive use of liquefied products to various synthetical directions based on different molecular structures and chemical solubil...