Accession Number:

ADA028643

Title:

Molecular and Crystal Structure of Polyglycolide,

Descriptive Note:

Corporate Author:

ARMY MEDICAL INTELLIGENCE AND INFORMATION AGENCY WASHINGTON D C

Report Date:

1975-03-14

Pagination or Media Count:

13.0

Abstract:

It is already known that glycolide polymers can be produced in mercury and antimony trifluoride catalyst systems. The authors have recently discovered that polymerization also occurs in the presence of an Aluminum organo-metallic catalyst such as Alet3. The polymers so obtained have high crystallinity, fuse in a nitrogen atmosphere, and can be extruded. The repeatable period situated in the main chain is 7.04A, as determined by X-ray analysis. The molecular structure conforms to a distance of 2 monomer units stretched in a plane zig-zag. The lattice constants, a 6.36A, b 5.13A, c 7.04A, and gamma 90 degrees, assign it to a rhombic system. The measured density shows that there are 4 monomer units in the lattice the space group from the equivalent Ausloschungsgesetz was found.

Subject Categories:

  • Polymer Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE