Tailoring Mechanical Properties of Polyurethanes Using Nature’s Building Blocks
This research explores the use of poly(amino acids) to modify the mechanical properties of traditional polyurethanes, enhancing their performance in low-strain applications. By mimicking nature’s materials like silk and collagen, we aim to create polymeric hybrids that exhibit tailored mechanical responses. The findings may lead to innovative applications in smart coatings and biomaterials for tissue engineering scaffolds. The project also demonstrated hands-on learning opportunities in chemical and polymer engineering for middle school students, fostering interest in STEM disciplines.
Tailoring Mechanical Properties of Polyurethanes Using Nature’s Building Blocks
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Presentation Transcript
Tailoring Mechanics using Nature’s Building BlocksLaShanda T. Korley, Case Western Reserve University, DMR 0953236 Nature uses amino acids to hierarchically-design mechanically robust materials, such as silks, collagen and titin. [1] We have used poly(amino acids) to modify the mechanical properties of traditional polyurethanes, particularly for low strain applications. [2] Further developments may lead to polymeric hybrids with tailored mechanical response with potential applications in smart coatings and biomaterials for tissue engineering scaffolds. Stress Without poly(amino acids) With poly(amino acid)s Strain Enhanced stiffness, but brittle Stretchy, but soft The well-defined secondary structures of these building blocks are also being exploited to develop responsive materials for ‘smart’ applications utilizing thermally-activated poly(amino acids). ΔT α-helix β-sheet [1] J.C. Johnson & L.T.J. Korley, Soft Matter, 2012, 10.1039/C2SM26185E; [2] J. C. Johnson, N. D. Wanasekara & L. T. J. Korley, Biomacromolecules, 2012, 13, 1279–1286
Building Bridges in the Engineering CommunityLaShanda T. Korley, Case Western Reserve University, DMR 0953236 Sister 2 Sister Approximately 15 women faculty, administrators, staff, and graduate and undergraduate students participated in an evening forum to share experiences in academia and industry in STEM disciplines and to dialogue about future career pathways. It is generally held 3 times per year. Engineering Exploration An undergraduate and a graduate student teamed up to highlight the fields of chemical engineering, and polymer science and engineering to a group of ~40 middle school students in Shaker Heights, OH. Hands-on demonstrations involving extrusion and mixing were developed for the students.
