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Control Strategies of Plastic Biodegradation through Adjusting Additives Ratios Using In Silico Approaches Associated with Proportional Factorial Experimental Design

Author

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  • Haigang Zhang

    (Alan G. MacDiarmid Institute, Jilin University, Changchun 130012, China)

  • Yilin Hou

    (Xi’an Boiler & Environmental Protection Engineering Co., Ltd., Xi’an 710054, China
    Huaneng Yangtze Environmental Technology Co., Ltd., Beijing 100031, China)

  • Wenjin Zhao

    (College of New Energy and Environment, Jilin University, Changchun 130012, China)

  • Hui Na

    (Alan G. MacDiarmid Institute, Jilin University, Changchun 130012, China)

Abstract

Plastics, as a polymer material, have long been a source of environmental concern. This paper uses polystyrene plastics as the research object, and the relative contribution of each component of plastic additives to plastic degradation is screened using the molecular dynamics method. The factorial experimental design method is combined with molecular dynamics simulation to adjust the additive composition scheme, analyze the mechanism of interaction between the additive components, and select the plastic additive combination that is most readily absorbed and degraded by microorganisms. Seven different types of plastic additives, including plasticizers, antioxidants, light and heat stabilizers, flame retardants, lubricants, and fillers, are chosen as external stimuli affecting the biodegradability of plastics. Using molecular dynamics simulation technology, it is demonstrated that plastic additives can promote the biodegradability of plastics. The factorial experimental design analysis revealed that all plastic additives can promote plastic biodegradation and plasticizer is the most favorable factor affecting plastic degradation, that hydrophobicity interactions are the primary reason for enhancing plastic degradation, and that screening No. 116–45 (plasticizer A, light stabilizer C, flame retardant E) is the most advantageous combination of biodegradable plastic additives. The plastic biodegradation effect regulation scheme proposed in this study is based on optimizing the proportion of additive components. To continue research on aquatic biodegradable plastics, the optimal combination of plastic components that can be absorbed and degraded by microorganisms is recommended.

Suggested Citation

  • Haigang Zhang & Yilin Hou & Wenjin Zhao & Hui Na, 2022. "Control Strategies of Plastic Biodegradation through Adjusting Additives Ratios Using In Silico Approaches Associated with Proportional Factorial Experimental Design," IJERPH, MDPI, vol. 19(9), pages 1-16, May.
  • Handle: RePEc:gam:jijerp:v:19:y:2022:i:9:p:5670-:d:809896
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    References listed on IDEAS

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    1. Claudia Campanale & Carmine Massarelli & Ilaria Savino & Vito Locaputo & Vito Felice Uricchio, 2020. "A Detailed Review Study on Potential Effects of Microplastics and Additives of Concern on Human Health," IJERPH, MDPI, vol. 17(4), pages 1-26, February.
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