Multinetwork Elastomer Using Covalent Bond, Hydrogen Bond, and Clay Plane Bond

Area of Science:

• Materials Science
• Polymer Chemistry

Background:

• Elastomers are crucial in various applications but often face limitations in properties like compression set, tensile strength, and recyclability.
• Developing advanced elastomers with enhanced performance and multiple functionalities remains a significant challenge in materials science.

Purpose of the Study:

• To synthesize a high-performance elastomer utilizing a synergistic multinetworking system.
• To investigate the combined effects of covalent, hydrogen, and clay plane bonds on elastomer properties.
• To evaluate the self-healing, heat resistance, and recyclability of the developed elastomer.

Main Methods:

• Fabrication of a novel elastomer through a multinetworking approach.
• Characterization of the elastomer's mechanical properties, including compression set and tensile strength.
• Analysis of the contribution of each cross-linking mechanism (covalent, hydrogen, clay plane) to overall performance.

Main Results:

• The multinetworked elastomer demonstrated excellent compression set resistance due to covalent bonds preventing polymer chain flow.
• Good flowability was achieved through hydrogen bond cleavage under heating.
• High tensile properties were attributed to the clay plane bond, which delocalizes cross-links and increases hysteresis energy.
• The material also exhibited self-healing properties, high heat resistance, and recyclability.

Conclusions:

• A multinetworking strategy combining covalent, hydrogen, and clay plane bonds effectively enhances elastomer performance.
• The developed elastomer offers a promising combination of mechanical robustness, processability, and advanced functionalities.
• This approach provides a pathway for designing next-generation thermoplastic elastomers with improved sustainability and performance characteristics.