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Title: Multiscale additive manufacturing of polymers using 3D photo-printable self-assembling ionic liquid monomers

Abstract

3D photoprinting of a self-assembled ionic liquid (IL) monomer based liquid-crystalline mesophase introduces high-resolution nanoscale features (2–5 nm) into otherwise low-resolution (microscale features) polymer builds. A wide variety of geometric builds possessing internal hexagonal perforated lamellar (HPL) nanostructure containing ~2.4 nm diameter pores are fabricated by the digital light processing 3D printing of an aqueous mixture (61(w/w%)) of an ionic liquid monomer, 1-decyl-3-vinylimidazolium chloride, a co-monomer, polyethylene diacrylate (PEGDA, M n 575), and a visible light photo-initiator (eosin Y and triethanolamine). Vibrational spectroscopy and thermal analysis proves acrylate moiety polymerization occurs during printing but incomplete consumption of the IL vinyl groups. Post-printing exposure to UV light (λ 350 nm) completes vinyl polymerization serving to further improve nanostructure ordering as determined by SAXS. Solvent swelling (ethanol) induces a structural transformation to a body center cubic architecture accompanied by slight pore expansion (to 3.2 nm). The introduction of nanoscale features into low-resolution photo-printed polymers establishes a low-cost strategy for the additive manufacturing of multi-scale, structured nanoporous polymer membranes.

Authors:
ORCiD logo [1]; ORCiD logo [1];  [1];  [2];  [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Argonne National Lab. (ANL), Lemont, IL (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Science (SC). Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1511633
Report Number(s):
LA-UR-19-22045
Journal ID: ISSN 2058-9689; MSDEBG
Grant/Contract Number:  
89233218CNA000001
Resource Type:
Accepted Manuscript
Journal Name:
Molecular Systems Design & Engineering
Additional Journal Information:
Journal Name: Molecular Systems Design & Engineering; Journal ID: ISSN 2058-9689
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Ndefru, Bineh Gese, Ringstrand, Bryan Scott, Diouf, Sokhna Issa-Yacine Faye, Seifert, Sönke, Leal, Juan Hilario, Semelsberger, Troy Allen, Dreier, Timothy A., and Firestone, Millicent Anne. Multiscale additive manufacturing of polymers using 3D photo-printable self-assembling ionic liquid monomers. United States: N. p., 2019. Web. doi:10.1039/C8ME00106E.
Ndefru, Bineh Gese, Ringstrand, Bryan Scott, Diouf, Sokhna Issa-Yacine Faye, Seifert, Sönke, Leal, Juan Hilario, Semelsberger, Troy Allen, Dreier, Timothy A., & Firestone, Millicent Anne. Multiscale additive manufacturing of polymers using 3D photo-printable self-assembling ionic liquid monomers. United States. doi:10.1039/C8ME00106E.
Ndefru, Bineh Gese, Ringstrand, Bryan Scott, Diouf, Sokhna Issa-Yacine Faye, Seifert, Sönke, Leal, Juan Hilario, Semelsberger, Troy Allen, Dreier, Timothy A., and Firestone, Millicent Anne. Mon . "Multiscale additive manufacturing of polymers using 3D photo-printable self-assembling ionic liquid monomers". United States. doi:10.1039/C8ME00106E.
@article{osti_1511633,
title = {Multiscale additive manufacturing of polymers using 3D photo-printable self-assembling ionic liquid monomers},
author = {Ndefru, Bineh Gese and Ringstrand, Bryan Scott and Diouf, Sokhna Issa-Yacine Faye and Seifert, Sönke and Leal, Juan Hilario and Semelsberger, Troy Allen and Dreier, Timothy A. and Firestone, Millicent Anne},
abstractNote = {3D photoprinting of a self-assembled ionic liquid (IL) monomer based liquid-crystalline mesophase introduces high-resolution nanoscale features (2–5 nm) into otherwise low-resolution (microscale features) polymer builds. A wide variety of geometric builds possessing internal hexagonal perforated lamellar (HPL) nanostructure containing ~2.4 nm diameter pores are fabricated by the digital light processing 3D printing of an aqueous mixture (61(w/w%)) of an ionic liquid monomer, 1-decyl-3-vinylimidazolium chloride, a co-monomer, polyethylene diacrylate (PEGDA, Mn 575), and a visible light photo-initiator (eosin Y and triethanolamine). Vibrational spectroscopy and thermal analysis proves acrylate moiety polymerization occurs during printing but incomplete consumption of the IL vinyl groups. Post-printing exposure to UV light (λ 350 nm) completes vinyl polymerization serving to further improve nanostructure ordering as determined by SAXS. Solvent swelling (ethanol) induces a structural transformation to a body center cubic architecture accompanied by slight pore expansion (to 3.2 nm). The introduction of nanoscale features into low-resolution photo-printed polymers establishes a low-cost strategy for the additive manufacturing of multi-scale, structured nanoporous polymer membranes.},
doi = {10.1039/C8ME00106E},
journal = {Molecular Systems Design & Engineering},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {4}
}

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This content will become publicly available on April 8, 2020
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