The influence of the structure of the dianhydride fragment on intermolecular interactions in linear polyimides and their properties

摘要

The energy of intermolecular interactions E_i.i. in polyimides is shown to be a link between the structure of the polyamic acid and polyimide macromolecules and the properties of the material. The effect of geometry of dianhydride and diamine fragments of the macromolecule on the set of deformational and strength characteristics, the ability of the material to soften and dissolve in polar aprotic solvents and, to a lesser extent, on thermal and thermal-oxidative degradation of the material is revealed through this energetical parameter.