71.石炭中の溶媒可溶成分から作製した種々のゲル膜の粘弾性

抄録

Various gel films have been suceeded to be prepared by using sovent-soluble constituents and polar solvents such as N-methyl-2-pyrrodinone and N,N-dimethyl-formamide. The creep compliance behaviors of the gel films showed the existence of viscoelastic properties, suggesting that the gel films have mainly physical cross-linked networks by coal-coal interaction and coal-solvent interaction, since the the solvent-soluble constituents have never original covalent cross-links. When the weight fraction of solvent in the gels was decreased, the viscous strain and the viscoelastic strain decreased, while the elastic strain was almost unchanged. The elastic component may be attributed to original elasticity of coal. The network structure of homogeneous coal-solvent gel films is discussed.