.png){kind=icon}
.png){kind=icon}
Return
Synergistic Molecular Network and Porous Architecture Engineering for High-Performance Shape-Memory Polymer Aerogels
.png){kind=icon}
PRE
AI
S
Z
T
沈
T
范
刘
DOI：10.1021/acs.macromol.6c00337.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
Shape-memory aerogels with complex geometries and large deformability hold great promise for advanced applications, yet their development is hindered by the difficulty in simultaneously achieving robust mechanical properties, excellent shape-memory performance, and structural stability. Herein, we present a high-performance shape-memory aerogel based on a polyimide–polysiloxane (PI–PSi) block copolymer. Its function stems from multiscale structural cooperation: reversible conformational changes of flexible polysiloxane segments and stable π–π stacking of rigid polyimide segments are synergistically coupled with the reversible deformation of a three-dimensional porous network. The optimal PI–PSi3 aerogel exhibits outstanding shape-memory performance (shape fixity ratio of 96.5%, recovery ratio of 97.8%), low density (∼0.1 g cm–3), and remarkable thermal insulation. As a proof-of-concept, a Kresling origami-inspired deployable capsule demonstrates its potential for intelligent thermal protection and adaptive space structures.
Keywords:
Aerogels
Materials
Polyimides
Shape memory
Silicones
Journal
IF:
5.2
Papers:
3.6W
Citations:
9.4W
Organization
Cited Papers