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Title: Chemically interconnected light-weight 3D-carbon nanotube solid network

Owing to the weak physical interactions such as van der Waals and π-π interactions, which hold nanotubes together in carbon nanotube (CNT) bulk structures, the tubes can easily slide on each other. In creating covalent interconnection between individual carbon nanotube (CNT) structures we saw remarkable improvements in the properties of their three-dimensional (3D) bulk structures. The creation of such nanoengineered 3D solid structures with improved properties and low-density remains one of the fundamental challenges in real-world applications. We also report the scalable synthesis of low-density 3D macroscopic structure made of covalently interconnected nanotubes using free-radical polymerization method after functionalized CNTs with allylamine monomers. The resulted interconnected highly porous solid structure exhibits higher mechanical properties, larger surface area and greater porosity than non-crosslinked nanotube structures. To gain further insights into the deformation mechanisms of nanotubes, fully atomistic reactive molecular dynamics simulations are used. Here we demonstrate one such utility in CO 2 uptake, whose interconnected solid structure performed better than non-interconnected structures.
Authors:
ORCiD logo [1] ;  [2] ;  [2] ;  [3] ;  [4] ;  [2] ;  [2] ;  [2] ;  [5] ;  [1] ;  [2]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Materials Physics and Applications Division
  2. Rice Univ., Houston, TX (United States). Dept. of Materials Science and NanoEngineering
  3. Rice Univ., Houston, TX (United States). Dept. of Chemistry
  4. King Fahd Univ. of Petroleum and Minerals, Dhahran (Saudi Arabia). Dept. of Chemistry
  5. Rice Univ., Houston, TX (United States). Dept. of Materials Science and NanoEngineering and Dept. of Chemistry
Publication Date:
Report Number(s):
LA-UR-17-21894
Journal ID: ISSN 0008-6223
Grant/Contract Number:
AC52-06NA25396
Type:
Accepted Manuscript
Journal Name:
Carbon
Additional Journal Information:
Journal Volume: 119; Journal Issue: C; Journal ID: ISSN 0008-6223
Publisher:
Elsevier
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Material Science
OSTI Identifier:
1352384
Alternate Identifier(s):
OSTI ID: 1439539