1999•Instrumentation Science & TechnologyOpen access

Photopyroelectric Characterization of Industrial Polymers: Temperature Dependent Thermal Diffusivity of Packaging Foils Manufactured from Low Density Polyethylene (LDPE) and Polyvinyl Chloride (PVC)

Jan Paul Favier, D. Dǎdârlat, D. Bićanić, K.J. Riezebos, Cornelius van den Berg, E. Gerkema

Abstract

The temperature dependence of thermal diffusivity of the low density polyethylene (LDPE) and polyvinyl chloride (PVC) packaging foils was determined using the photopyroelectric (PPE) approach in the standard configuration. Glassy phase transitions observed in foils within the -30°C to 70°C range cause a 7 to 20% increase in values of thermal diffusivity for these test materials. The results obtained by the PPE approach were confirmed by differential scanning calorimetry.

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Key concepts: Low-density polyethylene, Polyvinyl chloride, Thermal diffusivity, Differential scanning calorimetry, Materials science, Polyethylene, Polymer, Composite material