RPI ID:
2003-076-201

Innovation Summary:
This invention introduces a method to control the microstructure of block copolymers by incorporating nanoscale fillers with tailored surface chemistries. By leveraging the self-assembly behavior of block copolymers and the selective compatibility of nanofillers, the inventors achieved spatially ordered hybrid materials. Experimental results using polyurethane (PU) and nanofillers such as zinc oxide, aluminum oxide, and nanoclays demonstrated up to 40% modulation in modulus with only 5 wt% filler. Characterization techniques including FTIR, TGA, XRD, DMTA, AFM, and FESEM confirmed that nanofillers influence phase separation, mechanical properties, and morphology.

Challenges / Opportunities:
Traditional methods of modifying block copolymer properties via block ratio adjustments are costly and inflexible for custom applications. This invention offers a scalable alternative by using nanofillers to direct phase separation and morphology. The approach enables fine-tuning of mechanical properties such as modulus, elongation, and fracture behavior. It opens new avenues for designing advanced materials for separation, catalysis, and photonics.

Key Benefits / Advantages:
✔ Enables precise control of polymer microstructure
✔ Reduces cost and complexity compared to traditional block ratio modification
✔ Enhances mechanical properties with minimal filler content
✔ Compatible with industrially relevant polymers like polyurethane
✔ Applicable to a wide range of nanofillers (metal, ceramic, organic)
✔ Supports development of highly organized hybrid materials

Applications:
• Separation membranes
• Catalytic substrates
• Photonic devices
• Biomedical and engineering thermoplastics

Keywords:
Block copolymer, nanocomposite, phase separation, nanofiller, polyurethane, microstructure control

Intellectual Property:
Issued US Patent US8974915B22