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The PDSC – Pressure Differential Scanning Calorimeter is differential scanning calorimeter under either high or low-pressure conditions. Raw materials and finished products are often processed or intended for use at conditions other than ambient temperature and pressure. Conventional calorimetry characterizes well the physical and chemical properties of materials. Now, pressure DSC extends characterization of materials to extreme pressures. A calorimeter measures phase changes, reactions or processes that absorb or release heat. A pressure DSC measures the effects of pressure on these measurements. DSC results are often different for samples analyzed in open versus hermetically sealed pans due to changes in pressure inside sealed pans. Pressure DSC controls pressure to study and understand the reason for those differences. Materials processed at conditions other than ambient temperature or products designed for extreme end use conditions can be better characterized at operating conditions using a controlled pressure DSC. The heart of the pressure DSC is a heat flux plate designed for to measure small energy changes with reliability versus not just versus temperature but also versus pressure.

Materials to Study with the Pressure Differential Scanning Calorimeter

  • Pressure Differential Scanning Calorimeter (PDSC) Product PhotoCatalysts
  • Chemicals
  • Coals and other fuels
  • Cosmetics
  • Explosives
  • Foods
  • Nuclear Research
  • Petrochemicals
  • Pharmaceuticals
  • Phenolics
  • Propellants
  • Rubbers
  • Thermoplastics
  • Thermosets
  • Waxes

Uses for Pressure Differential Scanning Calorimeter

  • Accelerated Aging
  • Crystallization temperature
  • Curing and cross-linking reactions vs. pressure
  • Effect of additives or processing conditions
  • Elastomer vulcanization
  • Heats of reaction
  • Hydrogenation and carbonization reactions
  • Increased Oxidation rate under high oxygen pressure
  • Measurements under process conditions, lyophilization for example
  • Melting / Boiling points
  • Oxidation Induction Time
  • Oxidative stability of oils, lubricants, fats, foods or plastics
  • Pharmaceutical Hydrates/Solvates – vaporization versus pressure
  • Physical processes / chemical reactions influenced by pressure
  • Pressure dependent chemical reactions
  • Pressure effect on polymorphic transitions, recycled material, glass transition
  • Pressure induced phase transitions
  • Reaction rates and temperatures
  • Simulate process and operating conditions
  • Stabilizer effectivenessSuppression of volatiles vaporization
  • Thermal stability
  • Vapor pressure measurements

PDSC Literature: PDSC