Relationship of viscocity with structure and composition of cellulose carbamate solution

The influencing factors of the viscocity of cellulose carbamate solution were studied.The results showed that CC of nitrogen contents higher 2.0% can be dissolved in sodium hydroxide solution of 9% to 11% at temperatures of-7~-3℃form CC solution of below 8.5%.The viscocity of CC solution increased as the polymer、contents of Nt、emperature of impregnant、concentration of CC increased and decreased as the amount of sodium hydroxide increased and the addition of carbamide.In addition,conserving temperature and time also have huge influence on the viscocity of CC solution.The viscocity of CC decreased with increase of temperature in low temperature.However,when the temperature is higher 15℃,the viscocity of CC increased with increase of temperature.During beginning 8 hours,the viscocity of CC decreased with increase of conserving time,then the viscocity of cellulose carbamate began to increase and gelation occurred.