期刊
MACROMOLECULES
卷 52, 期 23, 页码 9291-9298出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.macromol.9b01780
关键词
-
资金
- Slovenian Research Agency [P2-0145, J2-9214]
Organocatalyzed ring-opening polymerization (ROP) of epsilon-caprolactone (CL) and 4,4'-bioxepanyl-7,7'-dione as a bis-lactone cross-linker was performed within the oil-in-oil high internal phase emulsions (HIPEs) at 50 degrees C. In this way, the cross-linked poly(epsilon-caprolactone) (PCL) polyHIPE foams of similar to 85% porosity were synthesized. Thermomechanical properties of the prepared polyHIPEs were studied and proved to greatly depend on a degree of PCL cross-linking. The melting and crystallization temperatures as well as the degree of crystallinity of PCL polyHIPE foams decrease with an increasing cross-linking degree. Semi-crystalline polyHIPEs demonstrate shape memory behavior with excellent shape fixity and shape recovery. At an appropriate degree of PCL cross-linking, the polyHIPE temporary shape can be fixed at room temperature, while a transition to the permanent shape occurs upon heating at 40 degrees C. Moreover, a two-way shape memory behavior of the PCL polyHIPEs under constant stress was observed.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据