Real-Time X-ray Scattering Study of Processing of Thermoplastic Polymers: Effects of Stress.
Abstract
Wide and small angle X-ray scattering experiments were conducted on a series of liquid crystalline polycarbonates. These materials are thermotropic and exhibit a monotropic liquid crystalline phase. The mesogen is mono- or di-substituted stilbene, and the flexible spacer is methylene. Fibers were drawn from the mesophase --and used in studies of the crystallographic unit cell parameters and thermal transitions. The carbonate linking group between the mesogen and the spacer causes differences in unit cell packing characteristics. Although no odd-even effect is found in the thermal transitions, there is a clear odd-even effect seen in the interchain spacings within the unit cells. jg p.1
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 17, 1995
- Accession Number
- ADA299626
Entities
People
- Peggy Cebe
Organizations
- Massachusetts Institute of Technology