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Starch-based aerogel prepared by freeze-drying: establishing a BP neural network prediction model

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Abstract

Preparation of starch-based aerogel by freeze-drying technique is considered as a suitable method for practical production due to its reasonable cost and controllable process. However, the low expansion rate of this method limits the application of adsorption and transport. In this study, through some pretreatment methods, such as adding glycerol and NaHCO3, and using double-roll extrusion, etc., the volume of the internal pores of starch aerogel was effectively increased, and the expansion rate was significantly improved. Meanwhile, a two-layer BP (back propagation) neural network model was established to predict the expansion rate. The result shows that the established BP network prediction model can accurately predict the target. Meanwhile, as the mass of glycerol increases, the expansion rate first increases and then decreases. When the mass of glycerol reaches 30 g, the expansion rate reaches the maximum value of 13.7%. As the mass of NaHCO3 increases, the expansion rate also increases first and then decreases. With the continuous increase of the double-roll extrusion time, the expansion rate will continue to increase. The simple pretreatment methods have a significant effect on improving the expansion rate of starch aerogel, which expands the application range. At the same time, the successfully applied BP network prediction model can improve production efficiency.

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Authors and Affiliations

  1. National and Local Joint Engineering Research Center for Advanced Packaging Material and Technology, Hunan University of Technology, 412007, Zhuzhou, People’s Republic of China

    Gang Sun & Guangsheng Zeng

  2. Hunan Key Laboratory of Biomass Fiber Functional Materials, Hunan University of Technology, 412007, Zhuzhou, People’s Republic of China

    Gang Sun, Guangsheng Zeng, Can Hu & Taijun Jiang

Authors
  1. Gang Sun
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  2. Guangsheng Zeng
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  3. Can Hu
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  4. Taijun Jiang
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Correspondence to Guangsheng Zeng.

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Sun, G., Zeng, G., Hu, C. et al. Starch-based aerogel prepared by freeze-drying: establishing a BP neural network prediction model. Iran Polym J 32, 37–44 (2023). https://doi.org/10.1007/s13726-022-01105-0

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  • DOI: https://doi.org/10.1007/s13726-022-01105-0

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