Premium
Synthesis and characterization of novel crosslinked polyurethane–acrylate electrolyte
Author(s) -
Ren Tianbin,
Luo Yinpei,
Huang Xiaobin,
Tang Xiaozhen
Publication year - 2003
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.11786
Subject(s) - electrolyte , materials science , ionic conductivity , polymer , propylene carbonate , acrylate , polymer chemistry , chemical engineering , crystallinity , thermogravimetric analysis , polymerization , conductivity , ethylene carbonate , chemistry , composite material , copolymer , electrode , engineering
Flexible, transparent, and crosslinked polymer films were synthesized by polymerization of PEG‐modified urethane acrylate using a simple method. A series of novel solid polymer electrolytes and gel electrolytes were prepared based on this type of polymer film. To understand the interactions among salt, solvent, and polymer, the swelling behaviors of the crosslinked polymer in pure propylene carbonate (PC) and liquid electrolyte solutions (LiClO 4 /PC) were investigated. The results showed that the swelling rate in the electrolyte solution containing moderate LiClO 4 was greater than that in pure PC. Thermogravimetric analysis (TGA) also supported the interaction between the solvent and polymer. The morphology and crystallinity of the crosslinked polymer and polymer electrolytes were studied using atomic force microscopy (AFM) and wide‐angle X‐ray diffraction (WAXD) spectroscopy. The effects of the content of the electrolyte solution on the ionic conductivity of gel electrolytes were explored. The dependence of the conductivity on the amount of the electrolyte solution was nonlinear. With a different content of the plasticizer, the ionic conduction pathway of the polymer electrolytes would be changed. The best ionic conductivity of the gel electrolytes, which should have good mechanical properties, was 4 × 10 r−3 S cm −1 at 25°C. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 340–348, 2003