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Sustainable Polymers: Our Evolving Understanding.

Yutan D Y L Getzler1, Robert T Mathers2

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This paper reviews the evolution of sustainable practices in polymer chemistry research. It advocates for a shift from the 12 Principles of Green Chemistry to a comprehensive metrics-based approach, including Life Cycle Assessment (LCA), for environmentally responsible polymer science.

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Area of Science:

  • Polymer Chemistry
  • Green Chemistry
  • Materials Science

Background:

  • The modern environmental movement and the rise of sustainability have critically influenced chemical research.
  • Early green chemistry efforts focused narrowly on catalysis and biobased monomers.
  • A tension exists between designing polymers for performance and minimizing environmental impact.

Purpose of the Study:

  • To discuss the evolution of environmentally responsible research strategies in polymer chemistry.
  • To critically evaluate the limitations of early green chemistry approaches.
  • To propose a more comprehensive, metrics-based strategy for sustainability in polymer science.

Main Methods:

  • Historical overview of environmentalism and chemistry's response.
  • Chronicle of personal research experiences and projects.
  • Analysis of descriptive metrics (e.g., E-factor, toxicity) and Life Cycle Assessment (LCA).

Main Results:

  • Early focus on catalysis and biobased monomers proved insufficient.
  • Consideration of monomer supply, polymer end-of-life, and degradation is crucial.
  • A move towards a portfolio of metrics, including LCA, is necessary for true sustainability.

Conclusions:

  • Achieving sustainability in polymer science requires moving beyond qualitative adherence to the 12 Principles of Green Chemistry.
  • A comprehensive metrics-based approach, integrating tools like LCA, is essential.
  • Proposes the establishment of a national LCA center to facilitate widespread adoption and guide sustainable polymer research.