Critical Conformational Change of Poly(oxypropylene)diamines in Layered Aluminosilicate Confinement

Abstract

Abstract The intercalation of aluminosilicate clays proceeds via a critical conformation change. Ion exchange of the poly(oxypropylene)diamine salts allows widening of the clay layers from 12 Å to 20 Å and then a sharp increase to 58 Å. The data indicate a critical conformation change of the intercalated amines, thus providing a new way for manipulating nanomaterials and control of polymer conformations in layered silicate confinement. Schematic illustration of POP‐amine self‐assembly in silicate confinements. magnified image Schematic illustration of POP‐amine self‐assembly in silicate confinements.