Synthesis and Optical Properties of a New Class of Polyamides Containing Reactive Diacetylene Groups
Abstract
New polyamides containing reactive diacetylene groups in their repeat structures were synthesized from a diacetylene diacid chloride and two different diamines using interfacial polymerization techniques. Thermal analysis and carbon 13 NMR spectroscopy were used to estimate the extent of conversion of the diacetylene groups to polydiacetylene network chains upon exposure to electron beam radiation in the solid state. The diacetylene groups contained in a polyamide based on an aliphatic diamine were found to be more reactable than those incorporated in a polyamide based on an aromatic diamine. The cross-polymerized polyamide-diacetylenes were found to exhibit reversible thermochromic behavior during temperature cycling which occurs with complete retention of hydrogen bonds and without any hysteresis effects. The thermochromic reversibility of these materials was attributed to the strongly hydrogen bonded chain segments pendent to the newly formed polydiacetylene chains.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 31, 1989
- Accession Number
- ADA208752
Entities
People
- H. W. Beckham
- M. F. Rubner
Organizations
- Massachusetts Institute of Technology