Ring Opening Metathesis Polymerisation (ROMP) as a tool for polyHIPes with extraordinary mechanical properties

Area of Science:

• Polymer Chemistry
• Materials Science

Background:

• PolyHIPE materials are synthesized via Ring Opening Metathesis Polymerisation (ROMP) of dicyclopentadiene.
• Mechanical properties of polyHIPEs are crucial for their application but often limited.
• Stabilization of high internal phase emulsions (HIPEs) is key to polyHIPE properties.

Purpose of the Study:

• To enhance the mechanical properties of polyHIPE materials.
• To investigate the influence of surfactant concentration and internal phase volume on polyHIPE characteristics.
• To achieve superior Young's moduli in highly porous cellular polymeric materials.

Main Methods:

• Preparation of polyHIPE materials through ROMP of dicyclopentadiene.
• Tuning of surfactant concentration and internal phase volume during HIPE stabilization.
• Characterization of mechanical properties, specifically Young's moduli.
• Analysis of the macroporous morphology.

Main Results:

• Mechanical properties of polyHIPEs were significantly improved by adjusting surfactant concentration and internal phase volume.
• Young's moduli were approximately 100 times higher than those of standard polyHIPE materials with similar porosity.
• Fully interconnected macroporous morphology was achieved even with a low surfactant concentration (0.25 v%).

Conclusions:

• The study demonstrates a successful strategy for enhancing polyHIPE mechanical performance.
• Optimizing HIPE stabilization parameters offers a pathway to advanced porous polymeric materials.
• These findings open possibilities for new applications requiring robust and highly porous materials.