Effect on ionic conductivity with modification of polymethylmethacrylate in poly(ethylene oxide)-layered silicate nanocomposites (PLSN)

• Published in: Materials science & engineering. B, Solid-state materials for advanced technology Vol. 77; no. 1; pp. 15 - 18
• Main Authors: Chen, W, Xu, Q, Yuan, R.Z
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 07.08.2000; Elsevier
• Subjects: Condensed matter: structure, mechanical and thermal properties; Diffusion in solids; Exact sciences and technology; Ionic conductivity; Modification; Physics; Polymer-layered silicate nanocomposite; Self-diffusion and ionic conduction in nonmetals; Transport properties of condensed matter (nonelectronic); Modification; Polymer-layered silicate nanocomposite; Ionic conductivity; Composition effect; Organic polymers; XRD; Silicates; Experimental study; Laminates; Polyethylene glycols; Composite materials; PMMA; DSC; Arrhenius equation; Nanocomposite; Activation energy
• ISSN: 0921-5107; 1873-4944
• DOI: 10.1016/S0921-5107(00)00448-7

The polymer-layered silicate nanocomposites (PLSN) are prepared by the polymer (polyethylene oxide (PEO) or PEO-polymethylmethacrylate (PMMA)) melt intercalation in layered silicate. Experimental results show that polymers can intercalate in silicate interlayer by melt intercalation and thus ionic conduction can be improved. The modification of polymethylmethacrylate (PMMA) can enhance the ionic conductivity at room temperature and decrease the apparent conductive activation energy in PLSN, which reach 1.2×10 −4 S cm −1 and 0.14 eV, respectively. The nanocomposites exhibit better ionic conduction at high temperature. The modification of PMMA can be used to improve ionic conductivity for PLSN.