Characterization of poly(dihalophenylene oxides) in solution

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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Synthesis and characterization of poly(dihalophenylene oxides) by thermal decomposition of copper complexes with tetramethylethylenediamine and ethylenediamine ligands
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Thermal polymerization of bis(trihalophenoxo)-N,N,N′,N′-tetramethylethylenediamine copper(ii) and bis(trihalophenoxo)ethylenediamine copper(ii) was achieved in toluene at 70°C. The dependences of intrinsic viscosity and the percentage yield of the polymers on a sequence of increasing decomposition times of copper complexes were investigated. Structural analyses of the polymers were carried out using mainly1H nuclear magnetic resonance spectroscopy and differential scanning calorimetry. 1,4-Catenation was hi...
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: