3D Printed Silicones with Shape Memory
Journal Article
·
· Scientific Reports
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Materials Engineering Division
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Materials Science Division
- Honeywell, Materials Engineering, Kansas City, MO (United States). Department of Energys National Security Campus
Direct ink writing enables the layer-by-layer manufacture of ordered, porous structures whose mechanical behavior is driven by architecture and material properties. Here, we incorporate two different gas filled microsphere pore formers to evaluate the effect of shell stiffness and Tg on compressive behavior and compression set in siloxane matrix printed structures. The lower Tg microsphere structures exhibit substantial compression set when heated near and above Tg, with full structural recovery upon reheating without constraint. By contrast, the higher Tg microsphere structures exhibit reduced compression set with no recovery upon reheating. Aside from their role in tuning the mechanical behavior of direct ink write structures, polymer microspheres are good candidates for shape memory elastomers requiring structural complexity, with potential applications toward tandem shape memory polymers.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC52-07NA27344
- OSTI ID:
- 1395481
- Alternate ID(s):
- OSTI ID: 1417275
- Report Number(s):
- LLNL-JRNL--716517; PII: 4663
- Journal Information:
- Scientific Reports, Journal Name: Scientific Reports Journal Issue: 1 Vol. 7; ISSN 2045-2322
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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