Polymerization of Unsaturated Dibasic Acid Derivatives Capable of Forming Micelles. A Novel Synthetic Method for Anionic Oligomers with High Charge Densities
✍ Scribed by Aoki, Shuzo; Okuno, Masakazu
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 441 KB
- Volume
- 39
- Category
- Article
- ISSN
- 0959-8103
No coin nor oath required. For personal study only.
✦ Synopsis
A novel synthetic method for producing anionic oligomers with high charge densities was developed by polymerization of surface active monomers in aqueous micellar solutions. Unsaturated dibasic acids, such as itaconic, maleic and fumaric acids, having low or no homopolymerizability in water, were converted to surface active derivatives by introducing a long chain alkyl by ester or amide bonding. Their polymerizabilities were greatly improved to give poly(itaconic acid derivative)s and poly(fumaric acid derivative)s in fairly good yield. However, in the case of sodium salts of maleic acid half ester and Nalkylmaleamic acid, hydrolysis of the monomer as a side reaction during the polymerization occurred to a great extent, reducing the active monomer concentration, and the polymer formation was apparently saturated at a rather early stage of the process. The resulting polymers, with molecular weight in the oligomer region, were hydrolysed to the polyanions.