Characterization of poly(dihalophenylene oxides) in solution

1987-9
Kısakürek, Duygu
Binboğa, Nevin
Harrod, John F.
Several different dihalophenylene oxide polymers prepared by thermal decomposition of halophenoxo copper complexes were studied in toluene using light scattering. For polymers of molecular weight around 5 × 104, those obtained from 4-bromo-2,6-dichlorophenoxide, 2-chloro-4,6-dibromophenoxide and 2,4,6-tribromophenoxide appear to be relatively linear with higher values of , whereas those obtained from 2,4,6-trichlorophenoxide and 2-bromo-4,6-dichlorophenoxide appear to have branched or condensed structures with lower values of . Values for the intrinsic viscosities and second virial coefficients were measured from ∼17 to 50°C for poly(dichlorophenylene oxides) synthesized from 2,4,6-trichlorophenoxide (Mw = 5.3 × 104) and from 4-bromo-2,6-dichlorophenoxide (Mw = 2.49 × 105). These quantities both pass through a maximum as the temperature increases.

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Citation Formats
D. Kısakürek, N. Binboğa, and J. F. Harrod, “Characterization of poly(dihalophenylene oxides) in solution,” Polymer, pp. 1767–1771, 1987, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/51984.