STUDY ON METAL CROSSLINKED CARBOXYMETHYL HYDROXYPROPYL CELLULOSE

Carboxymethyl hydroxypropyl cellulose (CMHPC) crosslinked with a novel organic titanium exhibits good thermal stability determined by Thermogravimetry (TG) and Differential Thermogravimetry (DTG) method, and its hydrogel retains greater viscosity at high temperature. The structure of metal crosslinked CMHPC have been investigated by FTIR spectrome-try. The results show that the active crosslinking sites are not only the carboxymethyl groups, but also the hydroxypropyl groups, and the interaction model are influenced by degree of substitute of CMHPC and pH of reaction medium.