Rapid, in situ plasma functionalization of carbon nanotubes for improved CNT/epoxy composites.

Details

• Personal Author:
  Alvarez NT ; Gbordzoe S ; Haase M ; Malik R ; McConnell C ; Shanov V
• Description:
  Improved CNT/epoxy composites composed of dry-drawn, aligned and functionalized CNTs were fabricated. Dry-drawn multi-walled carbon nanotube (MWNTs) were functionalized by atmospheric pressure He/O2 based plasma during the manufacturing of the CNT sheets and epoxy resin dissolved in solvent was sprayed during the manufacturing. The extent of CNT functionalization was controlled by adjusting the plasma power and flow rate of oxygen. Functionalized CNTs were characterized by Raman, X-ray Photoelectron Spectroscopy (XPS) and contact angle testing. The % wt CNT content in the composites was controlled by adjusting the concentration of epoxy in the solution used for spraying. CNTs functionalized by 100 W plasma and 63% wt CNT content produced the best composites demonstrating 43% improvement in tensile strength and 78% improvement in modulus over composites made with pristine CNTs. High % wt CNT content in the composites allow for the creation of strong, light-weight composites demonstrating specific strength as high as 918 MPa g-1 cm-3, a 55% and 50% improvement over pristine CNT sheet and CNT/epoxy composite made with pristine CNTs, respectively. [Description provided by NIOSH]
• Subjects:
  Occupational Health Safety
• Keywords:
  Nanocomposites; MWCNT; Multi-walled carbon nanotubes; Nanomaterials; Epoxy resins; Materials testing; Mechanical properties
• ISSN:
  2046-2069
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Ohio ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  6
• Issue:
  110
• NIOSHTIC Number:
  nn:20065058
• Citation:
  RSC Adv 2016 Nov; 6(110):108840-108850
• Contact Point Address:
  Vesselin Shanov, Department of Mechanical & Materials Engineering, University of Cincinnati, Cincinnati, OH, USA
• Email:
  shanovvn@ucmail.uc.edu
• CAS Registry Number:
  Carbon nanotubes (CAS RN 308068-56-6)
• Federal Fiscal Year:
  2017
• Performing Organization:
  University of Cincinnati
• Peer Reviewed:
  True
• Start Date:
  20050701
• Source Full Name:
  Royal Society of Chemistry Advances
• End Date:
  20260630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:11b0446529d0e437545cf8c893be38b18ed4f3f1ef50fd3ed9cc3a11104b9e7c3fbd7853daec97e39514c9e85f6aa6b772551ba00d938a2b666b85bb01e85b8f
• Download URL:
  https://stacks.cdc.gov/view/cdc/249312/cdc_249312_DS1.pdf
• File Type:
  [PDF - 2.39 MB ]