RADIATION POLYMERIZATION OF ACETYLENE DERIVATIVES
Final rept. 2 Oct 1962-2 Apr 1963
MONSANTO RESEARCH CORP DAYTON OH
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Research on the radiation-induced polymerization of acetylene derivatives to produce polyene polymers with useful properties was concerned with synthesis of acetylene derivatives, thermal, chemical and radiation-induced polymerizations and copolymerizations of selected acetylene derivatives, and characterization and evaluation of the prepared polymers. Diethynylbenzenes were prepared and used as crosslinking agents in these polymerizations to insure solid products. Radiation yields with G values number of monomer molecules polymerized per 100 ev of absorbed radiation greater than 100 were observed in the copolymerizations of p-diethynylbenzenepropiolic acid 296 and p- diethynylbenzenedimethylethynyl boronate 136 systems. Radiation yields for the polymerization and copolymerization of all other acetylene derivatives except propiolic acid were small and G values were less than 30. In general, the systems examined were thermally sensitive which necessitated low temperature radiolyses to determine radiation yields. Two polymeric systems, p-polyphenyl and polyferrocene, which should have long conjugated paths were prepared chemically and included in this study.
- Polymer Chemistry