采用二次通用旋转试验设计,对水溶性壳聚糖 / 纤维素复合膜的制备工艺进行了优化,建立了复合膜的拉伸强度与水溶性壳聚糖质量分数、纤维素质量分数、甘油浓度的二次回归数学模型,并利用该模型探讨了各因素对复合膜的拉伸强度的影响。 结果表明,各因素对复合膜的拉伸强度作用大小依次为纤维素质量分数 >甘油质量分数>水溶性壳聚糖质量分数;水溶性壳聚糖质量分数为 3. 6% ,纤维素质量分数为 2. 5% ,甘油质量分数为 10% 时,复合膜的性能最优,在该条件下,复合膜的拉伸强度为 0. 801 MPa,伸长率为 15. 2% ,且柔软度为 288 mN。

The preparation of soluble chitosan / cellulose composite film was optimized by quadratic general rotary unitized design, and a quadratic regression equation was established between the film's tensile strength and three factors, namely, soluble chitosan mass fraction concentration, cellulose mass fraction, and glycerin concentration. The influence of the factors on the film's tensile strength was investigated by the equation. Results showed the order of significance that influence the film's tensile strength was cellulose mass fraction, glycerin concentration, and soluble chitosan mass fraction; the optimum preparation conditions of composite film are: soluble chitosan mass fraction 3. 6% , cellulose mass fraction 2. 5% , and glycerin concentration 10% ; under this condition, the tensile strength of the composite film is 0. 801 MPa, elongation at breaking 15. 2% , and softness 288 mN.