Modulated differential scanning calorimeter TA Instruments Discovery
Modulated differential scanning calorimeter TA Instruments Discovery equipped with a photo-calorimetric module OmniCure Series 2000, Lumen Dynamics.
Specification
General description
- Determination of the heat flow associated with materials as a function of temperature.
- The sample is heated or cooled under defined rate together with the reference sample.
- The signal (change in the heat flow) correlates with the phase transitions in the sample.
- Quantitative and qualitative analysis of endothermic (heat absorption) and exothermic (heat production) processes of materials: physical transitions caused by phase changes (glass transition, melting, crystallization), oxidation of other kinetic and thermodynamic processes.
- Determination of the heat capacity of a material.
- Identification of the relation between processing conditions and end-use performance of the material.
Applications
- Identification of polymers and polymer blends, composites and copolymers.
- Determination of heat capacity.
- Assessment of oxidation stability (OIT).
- Evaluation of phase transitions and quality testing of plastics and bio/polymeric samples.
- Assessment of crystalline content in semicrystalline polymers.
- Evaluation of emulsions stability or hydration of the material (free and bonded water).
- Curing module enables photo-calorimetric measurements photo-initiated processes, e.g. curing of resins in dental materials.
- Evidence of contamination of polybuthyleneterephtalate in polyamides.
- Change in mechanical properties of wall plugs caused by different amounts of crystalline and amorphous phase.
- Determination of heat capacity of polypropylene.
- Assessment of degradation of rubber sealings.
- Identification of injection molded plastics.
- Analysis of polyurethane glues.
Specification
- Analysis of phase transition from -80 to 400 °C.
- Solid samples (pellets, powders, fibers, films) and liquid including gels.
- Common sample mass for analysis » 10 mg.
- Autosampler for 50 samples.
- Photo-calorimetric module (200W UV lamp technology, wavelenghts from 320 to 500 nm, exposition time 0,2-999.9 sec, output 0,2 W/cm2 - 40 W/cm2.
Publications
KORČUŠKOVÁ, M.; SVATÍK, J.; TOMAL, W.; ŠIKYŇOVÁ, A.; VISHAKHA, V.; PETKO, F.; GALEK, M.; STALMACH, P.; ORTYL, J.; LEPCIO, P., 2024: Anatase and rutile nanoparticles in photopolymer 3D-printed nanocomposites: Band gap-controlled electron interactions in free-radical and cationic photocuring. REACTIVE & FUNCTIONAL POLYMERS 200, p. 1 - 12, doi: 10.1016/j.reactfunctpolym.2024.105923 (WITEC-RAMAN, JASCO, MIRA-STAN, DSC-DISCOVERY)
KORČUŠKOVÁ, M.; SEVRIUGINA, V.; ONDREÁŠ, F.; SVATÍK, J.; TOMAL, W.; VISHAKHA, V.; ORTYL, J.; LEPCIO, P., 2022: Photoactivity, conversion kinetics, nanoreinforcement, post-curing, and electric/dielectric properties of functional 3D printable photopolymer resin filled with bare and alumina-doped ZnO nanoparticles. POLYMER TESTING 116, p. 1 - 10, doi: 10.1016/j.polymertesting.2022.107798 (MIRA-STAN, FTIR-CHEMLAB, RIGAKU9, DSC-DISCOVERY)