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Title: Mechanically Robust, Ultraelastic Hierarchical Foam with Tunable Properties via 3D Printing

Abstract

We present a mechanically robust, ultraelastic foam with controlled multiscale architectures and tunable mechanical/conductive performance is fabricated via 3D printing. Hierarchical porosity, including both macro- and microscaled pores, are produced by the combination of direct ink writing (DIW), acid etching, and phase inversion. The thixotropic inks in DIW are formulated by a simple one-pot process to disperse duo nanoparticles (nanoclay and silica nanoparticles) in a polyurethane suspension. The resulting lightweight foam exhibits tailorable mechanical strength, unprecedented elasticity (standing over 1000 compression cycles), and remarkable robustness (rapidly and fully recover after a load more than 20 000 times of its own weight). Surface coating of carbon nanotubes yields a conductive elastic foam that can be used as piezoresistivity sensor with high sensitivity. For the first time, this strategy achieves 3D printing of elastic foam with controlled multilevel 3D structures and mechanical/conductive properties. In conclusion, the facile ink preparation method can be utilized to fabricate foams of various materials with desirable performance via 3D printing.

Authors:
 [1]; ORCiD logo [2]; ORCiD logo [1]
  1. Case Western Reserve Univ., Cleveland, OH (United States). Department of Macromolecular Science and Engineering
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Sciences Division
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE
OSTI Identifier:
1435182
Alternate Identifier(s):
OSTI ID: 1432731
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Advanced Functional Materials
Additional Journal Information:
Journal Volume: 28; Journal Issue: 21; Journal ID: ISSN 1616-301X
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 42 ENGINEERING; controllable performance; direct ink writing; hierarchical porosity; stress sensing; ultraelastic foams

Citation Formats

Chen, Qiyi, Cao, Peng-Fei, and Advincula, Rigoberto C. Mechanically Robust, Ultraelastic Hierarchical Foam with Tunable Properties via 3D Printing. United States: N. p., 2018. Web. doi:10.1002/adfm.201800631.
Chen, Qiyi, Cao, Peng-Fei, & Advincula, Rigoberto C. Mechanically Robust, Ultraelastic Hierarchical Foam with Tunable Properties via 3D Printing. United States. doi:10.1002/adfm.201800631.
Chen, Qiyi, Cao, Peng-Fei, and Advincula, Rigoberto C. Wed . "Mechanically Robust, Ultraelastic Hierarchical Foam with Tunable Properties via 3D Printing". United States. doi:10.1002/adfm.201800631. https://www.osti.gov/servlets/purl/1435182.
@article{osti_1435182,
title = {Mechanically Robust, Ultraelastic Hierarchical Foam with Tunable Properties via 3D Printing},
author = {Chen, Qiyi and Cao, Peng-Fei and Advincula, Rigoberto C.},
abstractNote = {We present a mechanically robust, ultraelastic foam with controlled multiscale architectures and tunable mechanical/conductive performance is fabricated via 3D printing. Hierarchical porosity, including both macro- and microscaled pores, are produced by the combination of direct ink writing (DIW), acid etching, and phase inversion. The thixotropic inks in DIW are formulated by a simple one-pot process to disperse duo nanoparticles (nanoclay and silica nanoparticles) in a polyurethane suspension. The resulting lightweight foam exhibits tailorable mechanical strength, unprecedented elasticity (standing over 1000 compression cycles), and remarkable robustness (rapidly and fully recover after a load more than 20 000 times of its own weight). Surface coating of carbon nanotubes yields a conductive elastic foam that can be used as piezoresistivity sensor with high sensitivity. For the first time, this strategy achieves 3D printing of elastic foam with controlled multilevel 3D structures and mechanical/conductive properties. In conclusion, the facile ink preparation method can be utilized to fabricate foams of various materials with desirable performance via 3D printing.},
doi = {10.1002/adfm.201800631},
journal = {Advanced Functional Materials},
number = 21,
volume = 28,
place = {United States},
year = {2018},
month = {4}
}

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Cited by: 8 works
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