Recent Developments in Synthesis, Properties, Applications and Recycling of Bio-Based Elastomers

Area of Science:

• Polymer Science
• Sustainable Chemistry
• Materials Science

Background:

• Global plastics production is increasing, with limited use of bio-based alternatives.
• Conventional elastomers are often non-recyclable, derived from non-renewable sources, and contribute to environmental pollution.
• There is a growing need for sustainable elastomers derived from natural and renewable resources.

Purpose of the Study:

• To review and propose novel methods for preparing bio-based elastomers.
• To explore advances in synthesis, properties, and applications of bio-based elastomers.
• To approach the circular economy and sustainability of these materials.

Main Methods:

• Review of existing and proposed strategies for bio-based elastomer synthesis.
• Focus on olefin metathesis as a sustainable synthesis technique.
• Utilizing natural resources like essential oils, terpenes, fatty acids, and fatty alcohols.

Main Results:

• Olefin metathesis enables depolymerization/degradation of rubbers using natural compounds.
• Control over molecular weights and functional groups is achieved.
• New bio-based elastomers with added value and potential for new polymers and materials are obtained.

Conclusions:

• Development of bio-based elastomers can reduce carbon emissions and reliance on fossil fuels.
• These materials offer biodegradable and/or compostable properties.
• Promotes a greener approach to elastomer production and application.