Aggregation Behavior and Film Formation of BBL and Other Ladder Polymers
Abstract
The ladder polymer, BBL, has been formed into thin films by collecting suspensions of the polymer obtained from acid reprecipitations upon a fritted glass funnel. After drying, the polymer can be removed in the form of a film with thickness dependent upon the amount of material used. The film can be freely handled and very advantageously used for obtaining infrared spectra. Such a film has a tensile strength of 9,600 lb/sq in as compared to a tensile strength of 16,000 lb/sq in obtained from the same polymer when cast from methanesulfonic acid solution. The films are dark with an intense golden luster which gives the appearance of a metal foil. Other aromatic heterocyclic polymers were examined to compare film formation with molecular structure.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1971
- Accession Number
- AD0736777
Entities
People
- F. E. Arnold
- R. L. Van Deusen
Organizations
- Air Force Research Laboratory