Degradable Polyketone Thermoplastic Elastomers with Biomass Sourced Composition.

Area of Science:

• Polymer Chemistry
• Materials Science
• Sustainable Chemistry

Background:

• Polyolefin elastomers (POEs) are widely used but environmentally persistent due to their hydrocarbon nature.
• There is a growing need for sustainable alternatives to conventional plastics and elastomers.

Purpose of the Study:

• To develop a sustainable synthesis for degradable thermoplastic elastomers (TPEs).
• To create high-performance TPEs from biomass-derived components.
• To address the environmental persistence of traditional POEs.

Main Methods:

• Carbonylative polymerization of ethylene and biomass-derived polar monomers (PMs).
• Utilized a cost-effective and scalable nickel catalyst resistant to catalyst poisons.
• Characterized the synthesized high-molecular-weight polyketone materials.

Main Results:

• Successfully synthesized degradable TPEs (polyketones) with high molecular weight.
• Achieved moderate strain recovery (SR) from 27% to 61%.
• Polyketones exhibited high melting temperatures (109°C-244°C) and tensile strength (14.9-41.6 MPa).

Conclusions:

• Demonstrated a sustainable route to high-performance TPEs using biomass-derived monomers.
• The developed polyketones combine industrial durability with photodegradability.
• The novel nickel catalyst enables efficient polymerization despite polar functional groups and CO.