Multiple Environment Polydiacetylene Containing Segmented Block Copolymers.
Abstract
We show that it is possible to incorporate polymerizable diacetylene groups within both the hard and soft segments of polyurethane/polyester-based segmented copolymers. The resultant microphase separated polymers are comprised of soft and hard segment domains that are both capable of supporting the solid-state polymerization of the diacetylene groups. Cross-polymerization of the diacetylene groups therefore creates polydiacetylene chains within two distinctly different microenvironments, each with its own thermal and mechanical behavior. As a result of this, these new multiple environment polydiacetylene containing block copolymers exhibit complex chromic behavior that is directly associated with the phase transitions of both the soft and hard segment domains.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 26, 1995
- Accession Number
- ADA316239
Entities
People
- Ken Zemach
- Michael F. Rubner
Organizations
- Massachusetts Institute of Technology