Equilibrium polymerization of acenaphthylene and its copolymerizations with electron-accepting vinyl monomers
- Mie Univ., Tsu (Japan). Dept. of Chemistry for Materials
Radical polymerization kinetics of acenaphthylene in toluene using 2,2{prime}-azobis (isobutyronitrile) (AIBN) as an initiator was investigated revealing an equilibrium polymerization. The values of monomer concentration at equilibrium were determined to be between 1.3 and 3.3 mol/L for a temperature range of 50--70 C. The thermodynamics parameters were determined and showed an enthalpy change of {delta}H = {minus}43 kJ/mol and an entropy change of {delta}S ={minus}98J/K {center_dot} mol. Furthermore, copolymerization of acenaphthylene with electron-accepting vinyl monomers such as methyl methacrylate (MMA) and acrylonitrile (AN) were carried out and showed a change from random to alternating copolymerization as the acenaphthylene concentration decreased. This change in mechanism is rationally explained in terms of the equilibrium polymerization of acenaphthylene.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 142104
- Journal Information:
- Macromolecules, Journal Name: Macromolecules Journal Issue: 26 Vol. 26; ISSN MAMOBX; ISSN 0024-9297
- Country of Publication:
- United States
- Language:
- English
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