Thermal molecular motion of polyethylene thin films

Hirohiko Yakabe, Keiji Tanaka, Toshihiko Nagamura, Tisato Kajiyama

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Melting and relaxation behaviors in thin films of high-density and linear low-density polyethylene (HDPE and LLDPE) were examined by microthermal analysis and dynamic viscoelastic measurements, respectively. Melting point (T m) in HDPE and LLDPE films, respectively, increased and decreased with decreasing thickness. In the case of the HDPE films, the amorphous content decreased with decreasing thickness. This leads to that molecular motion of chains involved in the crystalline region is depressed with decreasing thickness. In contrast, although the amorphous content also decreased with decreasing thickness for the LLDPE films, it is not so small. Invoking that molecular motion in the amorphous region becomes active and dominates with decreasing film thickness, it can be understood that T m decreased with thickness for the LLDPE films.

Original languageEnglish
Title of host publication54th SPSJ Annual Meeting 2005 - Polymer Preprints, Japan
Pages926
Number of pages1
Volume54
Edition1
Publication statusPublished - 2005
Event54th SPSJ Annual Meeting 2005 - Yokohama, Japan
Duration: May 25 2005May 27 2005

Other

Other54th SPSJ Annual Meeting 2005
CountryJapan
CityYokohama
Period5/25/055/27/05

Fingerprint

Linear low density polyethylenes
Polyethylenes
Thin films
High density polyethylenes
Melting point
Film thickness
Melting
Hot Temperature
Crystalline materials

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Yakabe, H., Tanaka, K., Nagamura, T., & Kajiyama, T. (2005). Thermal molecular motion of polyethylene thin films. In 54th SPSJ Annual Meeting 2005 - Polymer Preprints, Japan (1 ed., Vol. 54, pp. 926)

Thermal molecular motion of polyethylene thin films. / Yakabe, Hirohiko; Tanaka, Keiji; Nagamura, Toshihiko; Kajiyama, Tisato.

54th SPSJ Annual Meeting 2005 - Polymer Preprints, Japan. Vol. 54 1. ed. 2005. p. 926.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Yakabe, H, Tanaka, K, Nagamura, T & Kajiyama, T 2005, Thermal molecular motion of polyethylene thin films. in 54th SPSJ Annual Meeting 2005 - Polymer Preprints, Japan. 1 edn, vol. 54, pp. 926, 54th SPSJ Annual Meeting 2005, Yokohama, Japan, 5/25/05.
Yakabe H, Tanaka K, Nagamura T, Kajiyama T. Thermal molecular motion of polyethylene thin films. In 54th SPSJ Annual Meeting 2005 - Polymer Preprints, Japan. 1 ed. Vol. 54. 2005. p. 926
Yakabe, Hirohiko ; Tanaka, Keiji ; Nagamura, Toshihiko ; Kajiyama, Tisato. / Thermal molecular motion of polyethylene thin films. 54th SPSJ Annual Meeting 2005 - Polymer Preprints, Japan. Vol. 54 1. ed. 2005. pp. 926
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