Shape Memory Polybutene-1 Alloy with Superior High-temperature Resistances to Creep and Raw Petroleum

High-temperature resistant shape memory polyolefins, which also exhibit resistances to creep and raw petroleum, are highly crucial for the pipelines in severe environments, like high temperature, high pressure and petroleum medium. Herein, a series of crosslinked polybutene-1 alloys (PBA-X) were firstly fabricated, which presented excellent high-temperature resistances to creep and raw petroleum at 85 °C, as well as outstanding shape memory behaviors like 93.7-100.0 % shape recovery ratio ( R r ), 90.6-98.4 % shape fixation ratio ( R f ), and easy recovered from varied programmed three-dimensional (3D) shapes through thermal stimulation. PBA-X are anticipated to offer significant potential as innovative pipeline lining materials for deep-ocean petroleum transportation systems.