Accession Number:

AD0283263

Title:

SYNTHESIS AND EVALUATION OF HIGH-ENERGY ORIENTED POLYMERS

Descriptive Note:

Corporate Author:

DENVER RESEARCH INST COLO

Personal Author(s):

Report Date:

1962-08-01

Pagination or Media Count:

1.0

Abstract:

IN CONNECTION WITH A STUDY OF POLYMERS CONTAINING HIGH-ENERGY GROUPS, POLY -nitro-2-methylpropyl methacrylate was prepared in both the isotactic m.p. above 300 C. and the atactic m.p. 280 C. forms. Isotactic poly2-nitro-2methylpropyl methacrylate was prepared by adding the monomer to a relatively large amount of toluene containing phenylmagnesium bromide as a catalyst. Atactic poly2-ni ro-2-met ylpropyl m h cryl AS PREP RED BY A CONVENTIO AL FREE RADICAL-TYP POLYMERIZATION USING AZOBISISOBUTYRONITRILE. Similarly, isotactic polymethyl methacrylate m.p. 140-160 C. was prepared and compared with a commercially available sample of atactic polymethyl methacrylate m.p. 120125 C.. Contrary to previous observations that the isotactic form of a polymer had higher mechanical strength than the atactic form, a actic polymethyl methacrylate had a higher tensile strength than the isotactic modification. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE