The past two decades have witnessed significant developments in the study of water-soluble cellulose derivatives. Numerous new water-soluble cellulosic polymers have been synthesized and studied for diversified applications including rheology modification, personal care and oilfield formulation, surface coating, colloid stabilization, and precious metal-ion recovery. These cellulosic polymers involve mainly hydrophobically-modified water-soluble cellulose derivatives with lipophilic-hydrophilic groups, water-soluble cationic cellulose derivatives with quaternary ammonium groups, water-soluble amphoteric cellulose derivatives with both acidic and basic groups of different strengths, as well as water-soluble sulfur-containing cellulose derivatives. Unlike common water-soluble cellulose derivatives known for a long time, these modified polysaccharides provide special and high properties or multi-functions for their utilization. In this article, a brief review is given regarding their research and development.
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Liming Zhang (2001) studied this question.