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研究了制备纤维素纤维的新型原料——纤维素氨基甲酸酯(CC)溶液的制备工艺及其稳定性。结果表明:在-5~10℃条件下,用聚合度为350~612的纤维素浆粕(棉浆粕、木浆粕)合成的氮含量(酯化度)为2.34%~3.56%的CC能很好地溶解在质量百分比浓度为8%~11%的NaOH溶液中,形成淡黄色透明溶液,该溶液稳定性良好,可用于纺丝。另外,尿素、AlCl3及ZnCl2在一定范围内对CC有助溶作用。
The preparation technology and stability of cellulose carbamate (CC) solution, a new kind of raw material for preparing cellulose fiber, were studied. The results showed that the nitrogen content (esterification degree) of cellulose pulp (cotton pulp, wood pulp) with the polymerization degree of 350-612 at -5 ~ 10 ℃ was 2.34% ~ 3.56% It dissolves well in the NaOH solution with mass concentration of 8% ~ 11% to form a light yellow transparent solution. The solution has good stability and can be used for spinning. In addition, urea, AlCl3 and ZnCl2 in a certain range of CC has a solubilizing effect.