54.石炭抽出物 : 溶媒ゲル膜の作製とその性状

抄録

Althougu it is generally accepted that coals have a three-dimensional cross-linked structure, the details are still unclear. Viscoelasticity of coals are recently studied for the understanding of the macromolecular structure of coal. In this study, coal-solvent gel films were first successfully prepared from coal extracts in organic solvents. Chemical and thermal properties of the gel films showed that a significant amount of solvent was retained strongly in coal sample probably due to strong interactions between the coal and the solvent. The measurement of stress-strain relationship showed that the gel films have some viscoelasticities. The specific properties are discussed related to the macromolecular structure of coals.