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High‐pressure synthesis of cyclic mesitylacetylene oligomer
Author(s) -
Kojima Yoshitsugu,
Matsuoka Takaaki,
Takahashi Hideroh
Publication year - 1999
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19990620)72:12<1539::aid-app5>3.0.co;2-q
Subject(s) - oligomer , monomer , polymer chemistry , chemistry , polymer , yield (engineering) , molar mass distribution , materials science , organic chemistry , composite material
Reaction of mesitylacetylene was carried out by annealing under high pressure (0.13 and 0.52 GPa). The products obtained were classified into soluble and insoluble products in chloroform. The insoluble product reacted under 0.13 GPa was the mesitylacetylene polymer. The soluble product reacted under 0.13 GPa was classified as the monomer and the oligomer [number‐average molecular weight ( M̄ n ): 390, weight‐average molecular weight ( M̄ w ): 453, Oligomer yield ( O y ): 36%]. The oligomer yield was accelerated by pressure [pressure: 0.13–0.52 GPa, M̄ n : 390–315, M̄ w : 453–968, O y : 36–98%]. Field desorption mass spectrum showed that the oligomer had cyclic structure. The result of the elementary analysis revealed that the insoluble product reacted under 0.52 GPa was a polycyclic aromatic compound. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 72: 1539–1542, 1999