Relationship between Hansen Solubility Parameters and Lewis Acid–Base Parameters of Polymers

Abstract

Hansen solubility parameters and Lewis acid–base parameters are two groups of parameters that are used to characterize solvents, polymers, and the interactions between polymer matrix and additives. Although their definitions are very different, they can well explain the interactions in polymer composites. Therefore, some relations should exist between them. In this paper, the Lewis acid–base parameters of three polymers (PET, PS, and PVA) were measured by IGC technique. Including five other polymers (PE, PMMA, PC, PVC, and PVDF), the relationship between total Lewis acid–base intensity (K a+K b) and total polar intensity (δ2 p+δ2 h) of the eight kinds of polymers are discussed, where δp and δh are the polar components of the Hansen parameters. It is found that these polymers are all Lewis base polymers according to the values of K b/K a. Generally, a polymer with a larger (K a+K b) value possesses a higher (δ2 p+δ2 h) value.