Assignment of the glass transition temperature using dielectric analysis: A review

Journal Article · Thu Sep 01 00:00:00 EDT 1994 · American Society for Testing and Materials, Special Technical Publication

DOI:https://doi.org/10.1520/STP15368S· OSTI ID:136464

Bidstrup, S A ^[1]; Day, D R ^[2]

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1. Georgia Inst. of Technology, Atlanta, GA (United States). School of Chemical Engineering
2. Auburn International, Danvers, MA (United States)

The use of dielectric analysis for the determination of the glass transition temperature for polymers is reviewed. Both a sharp increase in the permittivity and the dielectric loss peak have been correlated with the glass transition. Dielectric data for an epoxy resin and polyvinylchloride are presented and compared with data obtained by differential scanning calorimetry (DSC). The dielectric glass transition approaches the DSC glass transition as the frequency of the dielectric measurement is decreased. The effects of contact resistance and moisture on the dielectric measurement are also discussed.

• Sponsoring Organization: USDOE
• OSTI ID: 136464
• Report Number(s): CONF-930398--
• Journal Information: American Society for Testing and Materials, Special Technical Publication, Journal Name: American Society for Testing and Materials, Special Technical Publication Journal Issue: 1249; ISSN 0066-0558; ISSN ASTTA8
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
DIELECTRIC PROPERTIES
DIPOLES
ELECTRIC CURRENTS
ELECTRODES
EPOXIDES
EXPERIMENTAL DATA
FREQUENCY DEPENDENCE
IONIC CONDUCTIVITY
MOISTURE
PERMITTIVITY
POLYMERS
PVC
RELAXATION LOSSES
TRANSITION TEMPERATURE