Surface-Modified Porous Clay Heterostructure Synthesized by Introduction of Cationic Ions: Effects on Dielectric Behavior

The dielectric enhancement of solid state materials was easily leading by adding the small amount of cationic ion in processing step. In this work, porous clay heterostructure (PCH) derived from bentonite was doped with various cationic solutions. The cationic-modified PCHs were characterized by SEM, BET and Zeta potential. The result suggested that metal ion was trapped into mesoporous structure of PCH, leading to the localized cationic charge along modified clay structure. Thus, the dielectric properties were enhanced. It can be noted that cationic-modified PCH would be one candidate material as excellent filler for dielectric properties enhancement in polymer based nanocomposite.