Thermal Diffusivity and Conductivity of Polyolefins by Thermal Lens Technique.

ABSTRACT: A mode-mismatched thermal lens spectrometry (TLS) technique, in a pump-probe two-laser-beam configuration, was employed for the experimental determination of the thermal properties of four selected well-characterized polyolefin homopolymer films. We investigated the thermal diffusivity (D) and thermal conductivity (κ) of high-density polyethylene, low-density polyethylene, linear low-density polyethylene, and polypropylene. We also measured the structural properties (i.e., average molecular weight, polydispersity index, branching number), along with the rheological and thermal properties (i.e., melting point, specific heat capacity Cp, degree of crystallinity) of samples by high-temperature gel permeation chromatography (HT-GPC), rheometric mechanical spectrometry (RMS), differential scann

SUBMITTER: Abbasgholi-Na B 

PROVIDER: S-EPMC9269369 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature