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3D Printed Silicones with Shape Memory

Journal Article · · Scientific Reports
 [1];  [2];  [1];  [1];  [1];  [3];  [1];  [2]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Materials Engineering Division
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Materials Science Division
  3. 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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Cited By (8)

Indirect 3D and 4D Printing of Soft Robotic Microstructures journal July 2019
Revisiting effects of microarchitecture on mechanics of elastomeric cellular materials journal March 2019
3D printing of shape memory hydrogels with tunable mechanical properties journal January 2018
Additive manufacturing with stimuli-responsive materials journal January 2018
Volumetric additive manufacturing via tomographic reconstruction journal January 2019
Preparation and performance of ultraviolet curable silicone resins used for ultraviolet cured coating and ultraviolet-assisted 3D printing materials journal January 2018
Fabrication of Superhydrophobic Silicone Rubber with Periodic Micro/Nano-Suction Cup Structure by ArF Excimer Laser-Induced Photodissociation journal June 2019
Indirect 3D and 4D Printing of Soft Robotic Microstructures text January 2019

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