網目構造をもつ高分子における分子鎖セグメントの易動性分布 : 高分子のレオロジー

概要

論文の詳細を見る
All solid polymers are present in three dimensional network structure because their molecular chains aggregate with various junctions e.g. chemical crosslinking, chain entanglement and other intermolecular couplings. It is probable that the macroscopic properties of polymers are dependent on the nature of the network structure even when no regularity exists in the mode of the aggregation and the system is completely amorphous. Descriptions of the network structure so far presented has been done solely in terms of the network density. However, the network structure may also depends on local packing geometry of molecular chain which includes many junctions. An essential feature of network structure is the restriction of segmental motion by the network junction. In the case of flexible chain molecule, this restriction may be effective in certain length of chains around the junction point. Segmental mobilities are then distributed along a molecular chain which passes through several junctions. To characterize the network structure, a new concept of the distribution of segmental mobilities is introduced. This concept will be found to be valid so as to apprehend systematically the volume effect of network density and some aspects of viscoelasticity.
社団法人日本材料学会の論文
1963-05-15