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以羟乙基纤维素(HEC)为原料,2-氯-4,6-二(N,N-二甲基-N-苄基1,3-丙二胺)1,3,5-均三嗪为改性剂,制备出不同取代度阳离子羟乙基纤维素。同时探讨了取代度及其浓度、阳离子及其浓度、转子转速、温度、pH值对阳离子羟乙基纤维素(CHEC)的黏性行为的影响。结果表明,阳离子羟乙基纤维素溶液黏度随着CHEC浓度增大、温度的升高、pH值的增加而减小。同一CHEC质量浓度下,取代度越高,转子的转速降低,黏度增大。CHEC在K_2SO_4溶液中的黏度总低于MgSO_4溶液中黏度;随着阳离子浓度的增加,CHEC溶液的黏度降低。
Hydroxyethyl cellulose (HEC) as raw material, 2-chloro-4,6-bis (N, N-dimethyl-N-benzyl 1,3-propanediamine) As modifiers, cationic hydroxyethyl cellulose with different degree of substitution was prepared. At the same time, the influence of the degree of substitution and its concentration, cation and its concentration, rotor speed, temperature and pH on the viscous behavior of cationic hydroxyethylcellulose (CHEC) were discussed. The results showed that the viscosity of cationic hydroxyethyl cellulose solution decreased with the increase of CHEC concentration, temperature and pH value. Under the same CHEC mass concentration, the higher the degree of substitution, the lower the rotor speed and the higher the viscosity. The viscosity of CHEC in K_2SO_4 solution was always lower than that in MgSO_4 solution. With the increase of cation concentration, the viscosity of CHEC solution decreased.