Margaret Frey

Margaret Frey

Positions Held: 
Director of Graduate Studies, Department of Fiber Science & Apparel Design, College of Human Ecology, Cornell University (August 2009- present)
Associate Professor, Department of Fiber Science & Apparel Design, College of Human Ecology, Cornell University (July 2008 – present).
Lois and Mel Tukman Assistant Professor of Human Ecology, College of Human Ecology, Cornell University (July 2005 – July 2008)
Assistant Professor, Department of Textiles and Apparel, College of Human Ecology, Cornell University (July 2002-present).
Manager of Material Development, Champlain Cable Corporation, (January 1998 – April 2002).
Materials Specialist, Johnson Filaments, (June 1995 – December 1997).
Technical Specialist, Helene Curtis Industries, (August 1988-August 1990).
Staff Scientist, TRI Princeton, (July 1987-August 1988).

During 2012 I taught 3 courses: FSAD 2370 (spring 2012), FSAD 6660 (spring 2012) and FSAD 1350/1360 (Fall 2012).

FSAD 2370: This course was completely revised to a 'flipped classroom' active learning model.  Students meet in HEB 113 lab space to write specifications for fabric samples starting from the simplest woven structures.  All work is conducted in teams and methods for determining fabric parameters build from simple measurements/visual assessment to calculating parameters from material properties.  We also used the new Dobby Loom and Kaledo softwear in the HEB T14 CAD lab to take the fabric structure process through the entire sequence from design to weaving.  The content delivery portion of the class was provided via an e-text book with online reading comprehension tests.  I completed the project for the Certificate of Teaching Excellence based on this course.

Based on student feedback (course evaluations) several tweaks have been made to this course for Spring 2013 including introductory presentations for each specification project and reporting via individual worksheets instead of group reports.  Class participation will be measured by attendance and instructor feedback to make this easier for students to understand.

FSAD 6660: We had hoped to make use of the fiber extruder to add another hands on element for this course. Perhaps the extruder will be available in 2014.

FSAD 1350:This course used many examples from current apparel advertisements and product descriptions to highlight the functions of fibers, fabrics and finishes.  10% of the grade was determined by 'participation'.  Participation was measured by attendance in class or at relevant seminars on campus.  Almost all students had perfect (or better) attendance.

• American Chemical Society - Division of Cellulose and Renewable Materials: Councilor, Treasurer, Member-at-Large and Symposium Chair,
• Fiber Society: Symposium Chair
• Society of Women Engineers: Participated in Cornell STEM recruiting

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.
 

Education:
Cornell University Chemical Engineering B.S. 1985
Cornell University Fiber Science M.S. 1989
North Carolina State University Fiber and Polymer Science Ph.D.1995

• FSAD 1350 - Fabrics, Fibers and Finishes
• FSAD 1360 - Fiber Laboratory
• FSAD 2370 - Structural Fabric Design
• FSAD 6660 - Fiber Formation Theory and Practice
• IGERT Module:  Sustainable Industry Practices
• IGERT Module:  Nanomaterials for Biosensors

Research Group Website: http://freyresearchlab.com/

NSF IGERT: http://www.ccmr.cornell.edu/igert/

Director of Graduate Studies

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.