Surfactant-assisted intercalation of high molecular weight poly(ethylene oxide) into vanadyl phosphate di-hydrate

A high molecular weight poly(ethylene oxide)/layered vanadyl phosphate di-hydrate intercalation compound was synthesized via the surfactant-assisted approach. Results confirmed that surfactant molecules were replaced with the polymer, while the lamellar structure of the matrix was retained, and that the material presents high specific surface area. In addition, intercalation produced a more thermally stable polymer as evidenced by thermal analysis.

CuKα X-ray diffraction patterns of the VOPO4/PEO (A) e VOPO4/CTA (B) and VOPO4/CTA/PEO (C).Figure optionsDownload as PowerPoint slideHighlights
► VOPO4/PEO has been synthesized by using CTAB, thereby improving PEO intercalation.
► The d-spacing increase from 1.30 nm (VOPO4/PEO) to 2.94 nm (VOPO4/CTA/PEO).
► This strategy was viable for intercalation of PEO with high molecular weight.