Oxycellulose modification

Sodium salts of oxycellulose have been prepared by different techniques and under different conditions to obtain a white powder salt of lowest carboxy l group content. Also, Fe(III) and AI(III) salts have been prepared front o xycellulose and from its sodium salt. To prepare amphoteric cation exchange derivatives, anionic oxycellulose was cationized by reaction with Refaktan K, a common commercial cationizing ag ent which contains diepoxypropyl dimethyl ammonium chloride: different reac tion conditions such as percentage cationizing agent, temperature and time have been investigated. Polyelectrolyte titration was used to measure the i on activity of the different products. Infrared spectroscopy of the differe nt samples was carried out and the results analysed and discussed. (C) 2000 Society of Chemical Industry.