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Design of Surfactant Molecules Under Performance Constraints.

Sofía González-Núñez1, Zeynep Sumer2, Carlos Amador3

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Designing sustainable surfactants is challenging. This study introduces a computer-aided molecular design framework to create novel, eco-friendly surfactant molecules with optimal properties for diverse industrial needs.

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computer-aided molecular designmolecular graphsmultiobjective optimizationproperty prediction modelssustainability

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Area of Science:

  • Materials Science
  • Computational Chemistry
  • Sustainable Chemistry

Background:

  • Surfactant solutions are vital in numerous industrial applications, necessitating sustainable molecule design.
  • Identifying surfactants balancing performance with minimal environmental impact is complex due to vast molecular possibilities.

Purpose of the Study:

  • To propose a computational framework for designing sustainable surfactant molecules.
  • To develop a systematic approach for optimizing surfactant properties and minimizing environmental impact.

Main Methods:

  • Utilized Computer-Aided Molecular Design (CAMD) for surfactant formulation and solution.
  • Developed a multistage methodology involving candidate generation for hydrophilic/hydrophobic parts and multiobjective optimization.
  • Integrated data-driven predictive models for key properties like critical micelle concentration, Krafft point, surface tension, toxicity, and biodegradability.

Main Results:

  • Successfully generated novel surfactant molecules through the developed framework.
  • Demonstrated the framework's effectiveness in two case studies.
  • Showcased the ability to incorporate specific structural constraints for accelerated discovery.

Conclusions:

  • The proposed CAMD framework offers an effective strategy for designing sustainable surfactants.
  • The methodology can be extended to more complex surfactant structures, including Gemini surfactants.
  • This approach facilitates the balance between desired physicochemical properties and reduced environmental/health concerns.