Thermal Analysis

Differential Scanning Calorimetry (DSC)

Properties Measured

Glass Transition (Tg)

Melting Points (Tm)

Crystallization Temperature (Tc)

Thermal Stability

Oxidation Onset

Decomposition Temperature

Percent Crystallinity

Heat Capacity

Degree of Curing

Heat of Chemical Reactions

Purity

Instrument Capabilities

Temperature Range: -180°C to 725°C

Temperature Accuracy: ± 0.1°C

Temperature Precision: ± 0.01°C

Calorimetric Precision: ± 0.05%

Calorimetric Reproducibility: ± 0.05%

Heating/Cooling Rate: 0.01°C to 100°C per Minute

Purge Gas Availability: Nitrogen, Air, Oxygen, Argon, Helium

Modulated DSC (MDSC)

Sample Requirements

Amount Required: 5 – 20 mg

Physical Form: Solid or Liquid

dsc-graph

Example Test Protocols

ASTM E793

Standard Test Method for Enthalpies of Fusion and Crystallization by Differential Scanning Calorimetry

ASTM E794

Standard Test Method for Melting and Crystallization Temperatures by Thermal Analysis

ASTM E928

Standard Test Method for Purity by Differential Scanning Calorimetry

ASTM E1269

Standard Test Method for Determining Specific Heat Capacity by Differential Scanning Calorimetry

ASTM E1356

Standard Test Method for Assignment of the Glass Transition Temperatures by Differential Scanning Calorimetry

ASTM D1519

Standard Test Methods for Rubber Chemicals – Determination of Melting Range

ASTM E1858

Standard Test Methods for Determining Oxidation Induction Time of Hydrocarbons by Differential Scanning Calorimetry

ASTM D2070

Standard Test Method for Thermal Stability of Hydraulic Oils

ASTM E2160

Standard Test Method for Heat of Reaction of Thermally Reactive Materials by Differential Scanning Calorimetry (DSC)

ASTM D3417

Standard Test Method for Enthalpies of Fusion and Crystallization of Polymers by Differential Scanning Calorimetry (DSC)

ASTM D3418

Standard Test Method for Transition Temperatures and Enthalpies of Fusion and Crystallization of Polymers by Differential Scanning Calorimetry (DSC)

ASTM D3895

Standard Test Method for Oxidative-Induction Time of Polyolefins by Differential Scanning Calorimetry (DSC)

ASTM D4419

Standard Test Method for Measurement of Transition Temperatures of Petroleum Waxes by Differential Scanning Calorimetry (DSC)

ASTM D4565

Standard Test Methods for Physical and Environmental Performance Properties of Insulations and Jackets for Telecommunications Wire and Cable

ASTM D4591

Standard Test Method for Determining Temperatures and Heats of Transitions of Fluoropolymers by Differential Scanning Calorimetry

ASTM D7426

Standard Test Method for Assignment of the DSC Procedure for Determining Tg of a Polymer or an Elastomeric Compound

ASTM D7426

Standard Test Method for Assignment of the DSC Procedure for Determining Tg of a Polymer or an Elastomeric Compound

ISO 11357-1 – Plastics

Differential Scanning Calorimetry (DSC) — Part 1: General Principle

ISO 11357-2 – Plastics

Differential Scanning Calorimetry (DSC) — Part 2: Determination of Glass Transition Temperature and Glass Transition Step Height

ISO 11357-3 – Plastics

Differential Scanning Calorimetry (DSC) — Part 3: Determination of Temperature and Enthalpy of Melting and Crystallization

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