Detailed analysis of visco-plastic behavior of polymers by using polarization imaging

2014 Fiscal Year Final Research Report

• Project/Area Number: 24350120
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Polymer/Textile materials
• Research Institution: Osaka University
• Principal Investigator: INOUE Tadashi 大阪大学, 理学(系)研究科(研究院), 教授 (80201937)
• Co-Investigator(Kenkyū-buntansha): URAKAWA Osamu 大阪大学, 大学院理学研究科, 講師 (70273539)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 二軸伸長 / 粘塑性 / 偏光イメージング / ひずみエネルギー / 応力光学則 / 修正応力光学則

Outline of Final Research Achievements

Detailed analysis of biaxial stretching properties of visco-plastic polymers such as amorphous polymers around the glass transition temperature or inhomogeneous thermos-plastic polymers was performed by using a newly developed biaxial stretching apparatus combined with a polarizing imaging camera. A new phenomenological strain energy theory introducing dissipative terms for plastic behavior well described the biaxial stretching properties the polymers. The theory also well described with birefringence development during the stretching.

Free Research Field

高分子物理化学