|Current Research Activities:|
Research themes in my laboratory fall under two interconnected umbrellas: rapidly renewable polymers as engineering materials and interfacing fiber science and nanotechnology. The success and the range of the research have resulted from strong collaboration with researchers in both related and dissimilar fields. Combining the tools and capabilities of fiber science with expertise in fields including entomology, horticulture, biological and environmental engineering, materials science, chemical and biomolecular engineering and biomedical engineering has resulted in synergistic leaps in materials research that would not be possible without close collaboration between experts in diverse fields.
INTERFACING FIBER SCIENCE AND NANOTECHNOLOGY
The second research theme, interfacing fiber science and nanotechnology, has resulted in particularly fruitful collaborations. Properties of fiber-based materials include:
• high specific surface area
• incorporation of multiple dissimilar materials in a single fabric or device
• strength and flexibility
• high porosity with adjustable pores size
• functional fibers including chemically reactive sights, conductivity, positively or negatively charged surfaces, nanoparticles and phase changing properties
These properties can combine with some of the unique physics and high reactivity that have been discovered at the nano-scale to create useful and functional materials. Several variations on this theme have created an ever-expanding circle of projects.
Several new research goals have developed over the past year along the theme of creating functional nano-fibers and nanofiber fabrics for specific end uses. Specific targets include controlling phase separation during fiber formation in electrically charged jets to 'self-assemble' co-axial fibers with different phases at the core and shell. Examples include hydrophobic core with hydrophilic shell, liquid crystal core with polymer shell. Additionally, research continues and spinning capabilities have been upgraded to allow formation of fibers with pH sensing, chemically reactive, conductive or +/- charged capabilities and piezoelectric power generation. Functional nanofibers are incorporated into nano-fiber fabrics, conventional fabrics, or microfluidic devices in specific patterns to create fiber-based devices.
Collaboration with other departments across campus including Materials Science and Engineering, Biological and Environmental Engineering, Entomology, Horticulture, Cornell Center for Materials Research, and the Nanobiotechnology Center continue. Collaborations have also been initiated with the Liquid Crystal Institute at Kent State University. A new industrial collaboration with Monsanto was developed.
Acting as Director of Graduate Studies for the Department of Fiber Science & Apparel Design (Field of Textiles). Added several new field members to support the Apparel Design Ph.D. Participated in proposal for new graduate degree in Design Practice. co-PI for 'Materials for a Sustainable Future' IGERT.
Xiang, C., et al., Controlled release of nonionic compounds from poly(lactic acid)/cellulose nanocrystal nanocomposite fibers. Journal of Applied Polymer Science, 2013: 127.(1) p. 79-86.
Schrote, K. and M.W. Frey, Effect of irradiation on poly (3, 4-ethylenedioxythiophene): poly (styrenesulfonate) nanofiber conductivity. Polymer, 2013. 54: 737-742.
Matlock-Colangelo, L., et al., Functionalized electrospun nanofibers as bioseparators in microfluidic systems. Lab on a Chip, 2012. 12(9): p. 1696-1701.
Cho, Y., et al., Preparation and Characterization of Amphiphilic Triblock Terpolymer-Based Nanofibers as Antifouling Biomaterials. Biomacromolecules, 2012. 13(5): p. 1606-1614.
Cho, D., S. Lee, and M.W. Frey, Characterizing zeta potential of functional nanofibers in a microfluidic device. Journal of Colloid and Interface Science, 2012. 372(1): p. 252-260.
Cho, D., N. Hoepker, and M.W. Frey, Fabrication and characterization of conducting polyvinyl alcohol nanofibers. Materials Letters, 2012. 68(0): p. 293-295.
BAEUMNER, A.J., M.W. FREY, and D. CHO, BIOFUNCTIONAL NANOFIBERS FOR ANALYTE SEPARATION IN MICROCHANNELS. 2012, WO Patent 2,012,129,527.
Reiffel, A., et al., Creating Surgically Relevant de novo Tissue Engineered Constructs Using Biocompatible Biodegradable Polymers. Journal of Surgical Research, 2011. 165(2): p. 208.
Cho, D., et al., Electrospun nanofibers for microfluidic analytical systems. Polymer, 2011. 52(15): p. 3413-3421.
Cho, D., et al., Properties of PVA/HfO2 Hybrid Electrospun Fibers and Calcined Inorganic HfO2 Fibers. The Journal of Physical Chemistry C, 2011. 115(13): p. 5535-5544.
Buyuktanir, E.A., J.L. West, and M.W. Frey, Optically responsive liquid crystal microfibers for display and nondisplay applications. Proc. SPIE, 2011. 7955: p. 79550P.
Sohn, A.M., et al., Endothelialization of Sacrificial Polymer-Derived Vascular Channels: Advancement towards the Creation of Surgically Relevant Tissue Replacements. Plastic and Reconstructive Surgery, 2010. 126: p. 58.
Rebovich, M.E., D. Vynias, and M.W. Frey, Formation and functions of high-surface-area fabrics. International Journal of Fashion Design, Technology and Education, 2010. 3(3): p. 129 - 134.
Li, L., M.W. Frey, and K.J. Browning, Biodegradability Study on Cotton and Polyester Fabrics. Journal of Engineered Fibers and Fabrics, 2010. 5(4): p. 42-53.
Li, L. and M. Frey, Preparation and characterization of cellulose nitrate-acetate mixed ester fibers. Polymer, 2010. 51(16): p. 3774-3783.
Hendrick, E., et al., Cellulose Acetate Fibers with Fluorescing Nanoparticles for Anti-counterfeiting and pH-sensing Applications. Journal of Engineered Fibers and Fabrics, 2010. 5(1): p. 21-30.
FREY, M., et al., BIODEGRADABLE CHEMICAL DELIVERY SYSTEM. 2010, WO Patent 2,010,039,865.
Buyuktanir, E.A., M.W. Frey, and J.L. West, Self-assembled, optically responsive nematic liquid crystal/polymer core-shell fibers: Formation and characterization. Polymer, 2010. 51(21): p. 4823-4830.
Xiao, M. and M.W. Frey, Study of cellulose/ethylene diamine/salt systems. Cellulose, 2009. 16(3): p. 381-391.
Xiang, C.H., Y.L. Joo, and M.W. Frey, Nanocomposite Fibers Electrospun from Poly(lactic acid)/Cellulose Nanocrystals. Journal of Biobased Materials and Bioenergy, 2009. 3(2): p. 147-155.
West, J.L., E.A. Buyuktanir, and M.W. Frey. Properties of responsive liquid crystal/polymer fibers. 2009: IEEE.