| 초록 |
Lignin is a natural polymer that exists in the woody part and has been discarded as a by-product generated in the papermaking process. Lignin is a thermosetting polymer in which aromatic compounds have a three-dimensional network structure. Recently, research to replace petroleum compounds by using lignin is being actively conducted. However, due to the three-dimensional network structure of lignin, it is not easy to achieve low molecular weight and solution, so it is difficult to use chemically. In this study, the three-dimensional network structure of lignin was chemically decomposed and then liquefied into an aqueous solution to examine its use as a monomer for polymer synthesis. In particular, an experiment was conducted to replace the polyol required for the production of polyurethane foam. The liquefaction method of lignin and the physical properties of polyurethane foam using it will be announced on the same day. |
