Chemical Modification of Poly(ethylene imine) for Polymeric Electrolyte.
Abstract
Linear PEI has been chemically modified in an attempt to prevent formation of a crystalline complex without altering its ability to dissolve salts and conduct ions. Three main systems were investigated: a) poly(N-acetylethylene imine), b) partially quaternized PEI with ethyl or butyl groups, and c) PEI cross-linked with diepoxyoctane. Dissolution of salt was followed by x-ray diffraction on the mixtures and changes in T sub g as determined by DSC. In all cases, the crystallinity was destroyed but conductivity of salt-containing polymer was not improved. However, lightly cross-linked PEI exhibits much improved mechanical properties and the incorporation of .05 mole NaI/mole of monomer yields a conductivity of .00005 S/cm at 100 C. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1985
- Accession Number
- ADA160482
Entities
People
- C. A. Harding
- C. K. Chiang
- G. T. Davis
- T. Takahashi
Organizations
- National Institute of Standards and Technology