Project Objective
Measure properties of a zein film sample
- Thermal properties using DSC
- Viscoelastic properties using DMA
- Crystalline properties using XRD
Today's Task
Calibrate DSC
- Change cooling unit from liquid nitrogen system (LNCS, -180C) to refrigerated system (RCS, -80C)
- Condition cell to remove water
- Change purge gas from He to N2
- Run heat/cool cycle
- Determine cell constant (heat flow calibration)
- Measure melting point of Indium (temperature calibration)
- Measure sapphire heat capacity (baseline calibration)
Notes
- Cell interior was tarnished due to oxidation & off-gassing of product decomposition
- Cleaned silver furnace using supplied glass fiber brush
- RCS successfully connected
- Due to impending hurricane & potential power outage, overnight run canceled
- Calibrations postponed until next week
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Project 1: Zein Film Properties
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