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Dilute solution properties of the polyether from bisphenol ‘A’ and 4,4′ dichlorodiphenyl sulphone

✍ Scribed by G. Allen; J. McAinsh; C. Strazielle

Publisher
Elsevier Science
Year
1969
Tongue
English
Weight
710 KB
Volume
5
Category
Article
ISSN
0014-3057

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✦ Synopsis

Almlmet--Dilute solution properties of Union Carbide polysuiphone have been measured by light scattering, osmometry, and viscometry; Mark-Houwink expressions have been determined in a thermodynamically good solvent, two thermodynamically bad solvents, and one solvent at the 0-temperature.

The following relationships have been obtained:

[~] (ml/gm) ----0" 145 × l~lw °'s° (dimethylsulphoxide, 105" 5 °)

[~] (ml/gm) ----0-103 × IV, lw °'ss (dimethylformamide, 25 °)

[~] (ml/gm) ----0.079 × l~lw °'s8 (tetrahydrofuran, 25 °)

[~7] (ml/grn) ----0"024 × l~w °'7" (chloroform, 25*). The values of the tmperturbed dimensions, ( < ro 2 >/M) t, solvent-polymer interaction parameters (B and xl) and eonformational parameter (a) have been computed by applying the theories of Stockmayer-Fixrnan-Burchard, Flory-Fox-Schaefgen, Kurata-Stockmayer-Roig, Ptitsyn and Inagaki-Suzuld-Kurata.

Because of uncertainty in the values of the various bond angles in the polymer chain the exact value of a cannot be given, but it must be close to unity. This low value is not unexpected, it is shared by other polymers containing X-Ph-X links.

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## Abstract Block structured polyethers based on phenolphthaleine, 4,4′‐dichlorodiphenylketone, and bisphenol A with different degrees condensation (__n__ = 1, 5, 10, and 20) were synthesized by means of acceptor‐catalytic polycondensation. Equaimolar quantities of chloranhydrides of iso‐ and terep