Determination of halogen in copolymers by dye-partition technique and calculation of r1 therefrom

Saha, Mihir Kumar ; Ghosh, Premamoy ; Palit, Santi R. (1964) Determination of halogen in copolymers by dye-partition technique and calculation of r1 therefrom Journal of Polymer Science Part A: General Papers, 2 (3). pp. 1365-1372. ISSN 0449-2951

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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/pol.196...

Related URL: http://dx.doi.org/10.1002/pol.1964.100020333

Abstract

Halogen-bearing polymers have been prepared by copolymerization of monomers (M1) such as styrene, methyl methacrylate, methyl acrylate, and vinyl acetate with traces of chlorine-bearing monomers (M2) such as allyl chloride and tetrachloroethylene at varying M1:M2 ratios in the 100:1 composition range. The halogen atoms in the copolymers were transformed to quaternary pyridinium halide groups by quaternization with pyridine. The copolymer compositions and the monomer reactivity ratio r1 were determined by the estimation of the quaternary halide groups in the copolymers by the dye-partition technique, with aqueous disulfine blue VN150 in 0.01M hydrochloric acid as the dye reagent.

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