publication . Article . 2015

Rheo-optical Raman study of microscopic deformation in high-density polyethylene under hot drawing

Kida, Takumitsu; Hiejima, Yusuke; Nitta, Koh-hei;
Open Access English
  • Published: 01 Jul 2015 Journal: Polymer Testing, volume 44, pages 30-36 (issn: 0142-9418, Copyright policy)
  • Publisher: Elsevier
Abstract
In situ observation of the microscopic structural changes in high-density polyethylene during hot drawing was performed by incorporating a temperature-controlled tensile machine into a Raman spectroscopy apparatus. It was found that the load sharing and molecular orientation during elongation drastically changed at 50°C. The microscopic stress of the crystalline chains decreased with increasing temperature and diminished around 50°C. Moreover, the orientation of the crystalline chains was greatly promoted above 50°C. These microscopic structural changes were caused by the thermal activation of the molecular motion within lamellar crystalline chains owing to the ...
Subjects
Medical Subject Headings: sense organseye diseases
free text keywords: High-density polyethylene, Hot drawing, In situ, Raman spectroscopy
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Article . 2015
Provider: JAIRO
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