Method for optimizing compatibility of sodium alginate/carrageenan composite film by using response surface method

Abstract

The invention discloses a method for optimizing compatibility of a sodium alginate / carrageenan composite film by using a response surface method. The method comprises the following steps: preparing the sodium alginate / carrageenan composite film by using sodium alginate and carrageenan as a composite matrix, nanocellulose as a reinforcer and glycerol as a plasticizer; carrying out a single factor test on the ratio of sodium alginate to carrageenan, the content of glycerol and the ratio of nanocellulose to a matrix, and testing each performance of the synthesized composite film; according to a single factor experiment result, a response surface method is adopted for experiment design, the proportion of sodium alginate to carrageenan, the content of glycerin and the proportion of nanocellulose in a matrix serve as independent variables, all properties of the composite film serve as response values, and a multivariate quadratic regression equation is established; and drawing according to a multivariate quadratic regression equation, analyzing the relationship between the independent variable and the dependent variable to obtain a response surface diagram of the regression equation, and determining the optimal ratio of the composite film preparation.

Description

technical field [0001] The invention belongs to the technical field of biopolymer materials, and in particular relates to a method for optimizing the compatibility of a sodium alginate / carrageenan composite film by using a response surface method. Background technique [0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] The mechanical properties of pure sodium alginate film and pure carrageenan film are poor, and the mechanical properties of the film can be improved by blending. In addition, the addition of nanocellulose particles can further improve the mechanical properties of the films. The film prepared by the traditional method has poor flexibility after drying, adding glycerin as a plasticizer can greatly improve the flexibility of the film material. Therefore, the content of sodium alginate, carrageenan, nanocellulose, glycerin and the ratio of various substances w...

AI Technical Summary

Problems solved by technology

Because the different uses of composite film materials have different requirements on their performance, and the performance of the film will be affected by multi-factor variables. However, it is difficult to optimize the best raw material mix in limited experiments by using conventional methods such as the single-factor variable method.

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