Dr. Lee's Biography
Supercritical Fluid Technology
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Analysis and Characterization
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Sustainable Energy and Advanced Materials (SEAM) Laboratory
The Polymer and Rubber Characterization Laboratory at the SEAM Laboratory is a state of the art laboratory for polymer and rubber analysis. This laboratory provides analytical support for multiple processes including polymer modification, manufacture of microporous films, polymer blends and composites, polymer clay nanocomposites, in addition to many other research endeavors in the polymer and rubber fields. Most of our analytical equipment comes from generous donations from B.F. Goodrich, Kimberly Clark, and Alpha Technologies. In addition some analytical equipment is fabricated in-house. Most of our polymer and rubber analytical equipment are listed below:
The Polymer and Rubber Characterization Laboratory has three Alpha Technologies Mooney Viscometers which allows for rapid throughput of test samples. The Mooney Viscometers have a data aquistion system and are controlled by electric solid state heater controllers. Mooney Viscosity is defined by ASTM D1646-07 as "the shearing torque resisting rotation of a cylindrical metal disk (or rotor) embedded in rubber within a cylindrical cavity." Mooney viscosity is an important measurement for characterization and performance of rubber compounds and is commonly used in industry as a means of quality control. Dr. Lee and his research group are extremely grateful to have our Mooney Viscometers as part of a generous donation from Alpha Technologies.
Dynamic Mechanical Thermal Analyzers or DMTA is versatile instrument used to measure many different properties of polymeric materials including Young's modulus, the storage modulus, relaxation properties, dynamic glass transition, etc. over a wide range of temperatures. Our DMTA is a DMTA-IV manufactured by Rheometric Scientific. This instrument was provided by Kimberly-Clark's funding.
Our texture analyzer manufactured by Texture Technologies is used to measure film characteristics such as stress and strain relationships. This instrument was provided by Kimberly-Clark's funding.
High Performance Liquid Chromatography or HPLC has a myariad of uses and is not dependent upon the volatility or stabilty of a compounds as with gas chromatographs. The applications of HPLC's include molecular weight distribution analysis of polymer compounds, separation of compounds, purificaiton of compounds, etc. Our HPLC is a Hewlett Packard 1050 Series with computerized data acquisition and control.
The thermal conductivity analyzer was built by Dr. Lee's research group to measure the thermal conductivity along the length of a sample at various temperatures. Thermal conductivity is an important property to characterize in that it is the measure of a material's ability to conduct heat.
The Polymer and Rubber Characterization lab also has several high power optical microscopes and a stereoscope of various configurations for detailed images and measurements. Some of the microscopes are equiped with cameras. The microscope in the above picture was donated by Dr. C. K. Riew.
The SEAM Lab is equipped with TA Instruments' DSC Q2000, the top-of-the-line research-grade DSC.
The SEAM Lab is equipped with TA Instruments' top-of-the-line TGA Q600 (SDT Q600). The SDT (simultaneous DSC-TGA) measures the heat flow and mass changes associated with transitions in materials over the temperature range of ambient to 1500 degrees Celsius.
The SEAM has TA Instruments' top-of-the-line rotational rheometer for advanced material characterization, in particular, measurement of rheological properties of advanced materials.
The SEAM Lab has Thermoscientific Nicolet 6700 FT-IR Spectrometer for polymer and rubber chemistry as well as liquid fuel characterization.
The SEAM Lab is equipped with SPEX CERTIPREP's Freezer/Mill Model 6870 for fine grinding soft materials such as polymeric resins.
Type of Equipment: Hydraulic Press
Instrument Model: 12 x 12 Manual Heated Hydraulic Laboratory Press
Brief Description: The Carver press is used to prepare polymer samples for analytical testing.
Type of Equipment: Twin Screw Extruder
Instrument Model:Micro-18 twin screw extruder, 30:1 L/D
Brief Description: The twin screw extruder is used to prepare polymer blends and composites.
Type of Equipment:Dynamic Mechanical Analyzer (DMA)
Manufacturer: TA Instruments
Instrument Model: DMA Q800
Brief Description: The DMA Q800 is used to study the viscous and elastic response of a polymer sample when it is exposed to a periodic stress.
The SEAM Lab's Analytical Wing has an extensive array of most up-to-date and advanced characterization equipment for its research in advanced materials and sustainable energy. All instruments are in great operating condition. The SEAM Lab's analytical capability is being constantly updated. External sample analysis service may be offered based on Ohio University contracts.