Preparation of poly(lactic acid)/poly(methyl methacrylate)/silicon dioxide degradable hybrid electrolytes

✍ Scribed by Hualin Wang; Liping Shu; Shaotong Jiang

• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 152 KB
• Volume: 117
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.31935

✦ Synopsis

Abstract

On the basis of sol–gel methodology, a novel degradable hybrid electrolyte, poly(lactic acid) (PLA)/poly(methyl methacrylate) (PMMA)/silicon dioxide (SiO~2~) hybrid electrolyte, was prepared from PLA, methyl methacrylate, and tetraethoxylsilicon with 3‐methacryloxypropyl trimethoxysilane as a coupling agent. As observed from Fourier transform infrared spectroscopy and X‐ray photoelectron spectroscopy spectra, the PLA, PMMA, and silica units were linked by covalent bonds through the coupling agent in a hybrid network. Differential scanning calorimetry results show that the heat‐resistance properties of the hybrid electrolyte improved with increasing SiO~2~ content. The hybrid electrolyte was shown to be amorphous by the X‐ray diffraction results. From study of ionic conductivity by alternating‐current impedance, the ionic conductivity of the PLA/PMMA/SiO~2~ hybrid electrolyte increased with increasing silica content, reached a maximum value of 2.42 × 10^−4^ S/cm at 2 wt % SiO~2~, and then decreased. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010