Deformation and fracture mechanism of slide-ring materials

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K17905
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Polymer/Textile materials
• Research Institution: The University of Tokyo
• Principal Investigator: Mayumi Koichi 東京大学, 大学院新領域創成科学研究科, 特任講師 (30733513)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 高分子エラストマー / 力学物性 / 破壊力学 / 超分子化学 / ポリロタキサン

Outline of Final Research Achievements

The toughening mechanism of slide-ring materials, in which polymer chains are cross-linked by ring molecules, has been investigated by macroscopic fracture tests and microscopic structural analysis. For slide-ring gels with solvent, their network structure is homogenized by the sliding of the movable cross-links under deformation, and the fracture toughness is dominated by the sliding distance of the sliding cross-links. In the case of sliding elastomers without any solvent, the ring cross-links are dispersed homogeneously in the elastomers and the homogeneous network structure leads to their high stretchability.

Free Research Field

高分子物性