Melt mixing of high-density polyethylenes and wheels of perpentylated pillar[5]arenes resulted in formation of polypseudorotaxane structures. Formation of the polypseudorotaxane structures led to extension of the high-density polyethylene chains, and dramatically increased the melting point of high-density polyethylene from 126 to 152 °C. We demonstrated molten state-to-solid and solid-to-molten state transitions of high-density polyethylene based on the host–guest system.
- Tomoki Ogoshi
- Hitoshi Kayama
- Motohiro Mizuno
