Exploring Interfaces That Matter in Polymer Composites – By Maneesha Sahni

Feb 25, 2026

My work focuses on the fracture mechanics of highly filled polymer composites, with a particular emphasis on understanding how surface functionalization of glass beads influences cavitation behavior when embedded in a polymer matrix under tensile loading. By modifying bead surfaces, such as through silane coatings, we can improve chemical bonding with the surrounding polymer and systematically study how interfacial interactions govern damage initiation.

Using polydimethylsiloxane (PDMS) as a model polymer system, I primarily rely on pure shear tearing mechanical testing, leveraging force-displacement data to quantify how different surface treatments alter the force required to trigger cavitation events at the bead-matrix interface. This work aims to provide deeper insight into interface-driven failure mechanisms in particle-filled composites.

Before starting my PhD, I completed a BS in Engineering (Biomedical Engineering) from Drexel University an MS in Biomedical Engineering from the University of Delaware where my research focused on gold nanoparticle-based diagnostics and therapeutic strategies for endometriosis. I also bring several years of industry experience, including roles in analytical R&D and quality control at pharmaceutical companies, as well as undergraduate co-ops spanning clinical research, product reformulation, and business development.

I’m looking forward to sharing more about this work during my CCM Connects talk on April 8, 2026.

Grateful to my advisor, Dr. Chelsea Davis and the CCM community for their mentorship and support.

Upcoming Events

North American Thermal Analysis Society (NATAS)
August 3, 2026
Atlanta, GA

CCM Summer Research Symposium
August 12, 2026
UD-CCM, Room 106, 101 Academy Street

SPE Automotive Composites Conf & Exhibit
September 9, 2026 – September 10, 2026
Novi, MI

CAMX
September 21, 2026 – September 24, 2026
Georgia World Congress Center, Building B,
285 Andrew Young International Blvd, NW,
Atlanta, GA 30313

American Society for Composites (ASC)
September 28, 2026 – September 30, 2026
Madison, Wisconsin