Bisulfite-initiated vinyl polymerization in aqueous media

Mukherjee, Asish Ranjan ; Ghosh, Premamoy ; Chadha, Subhash Chander ; Palit, Santi Ranjan (1964) Bisulfite-initiated vinyl polymerization in aqueous media Die Makromolekulare Chemie, 80 (1). pp. 208-209. ISSN 0025-116X

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Bisulfite initiates aqueous polymerization of certain vinyl monomers such as methyl methacrylate, ethyl methacrylate, methacrylic acid and styrene but it fails in case of acrylonitrile, vinyl acetate, methylacrylate, and acrylic acid under identical conditions. The mechanism of initiation has been discussed. Catalyst exponent of this initiator with respect to methyl methacrylate is near about 0.5. Quantitative determination of endgroup by dye techniques of the polymers obtained show that about 2 sulfonate (-SO3H) endgroups are present per chain in almost all cases. No sulphate endgroup (-OSO3H) is ever found. In case of very low initiator concentration ( < 0.005 mole/1.), some hydroxyl endgroups are also found in general but the total (sulfonate and hydroxyl combined) amounts to about 2 per polymer chain.

Item Type:Article
Source:Copyright of this article belongs to Huthig & Wepf Verlag, Basel.
ID Code:34252
Deposited On:29 Mar 2011 13:38
Last Modified:29 Mar 2011 13:38

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