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Ring‐opening polymerization of 2‐phenyl‐4,7‐dioxaspiro[2.4]heptane
Author(s) -
Rasoul Husam A. A.,
Beam James R.,
Mckinney Michael A.,
Aiani Karen E.
Publication year - 1991
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19910420117
Subject(s) - copolymer , cationic polymerization , acrylonitrile , polymer chemistry , maleic anhydride , monomer , heptane , styrene , itaconic acid , polymerization , ring (chemistry) , ring opening polymerization , chemistry , radical polymerization , materials science , polymer , organic chemistry
1‐Phenyl‐4,7‐dioxaspiro[2.4]heptane (1) was spontaneously copolymerized in bulk at 70°C with maleic and itaconic anhydride to give 1:1 alternating copolymer. Both the cyclopropyl and dioxapentyl rings were observed to open during the propagation. Copolymer yields, compositions and molecular weights are similar regardless of the presence of free radical initiator or inhibitor. A propagation mechanism via zwitterionic addition is suggested. Only homopolymers of styrene and acrylonitrile were isolated when these monomers were heated with 1 in bulk at 70°C in the presence or absence of AIBN. The cationic ring‐opening oligomerization of 1 is also discussed.