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Title: Epoxy resin reinforced with nanothin polydopamine-coated carbon nanotubes: a study of the interfacial polymer layer thickness

Abstract

Carbon nanotubes (CNTs) functionalized by a nanothin poly(dopamine) (PDA) layer were produced by a one-pot, nondestructive approach, with direct polymerization of dopamine on the CNT surface. The thickness of the PDA layer can be well-controlled by the reaction time and the proportion of dopamine, and this thickness is found to be the key factor in controlling the dispersion of CNTs and the extent of the interfacial interactions between the CNT@PDA and epoxy resin. SEM results indicated that the dispersion of CNTs in epoxy was improved significantly by coating a nanothin PDA layer onto the CNT surface. In agreeme nt with this finding, the CNTs functionalized with the thinnest PDA layer provided the best mechanical and thermal properties. This result confirmed that a thinner PDA layer could provide optimized interfacial interactions between the CNT@PDA and epoxy matrix and weaken the self-agglomeration of CNTs, which led to an improved effective stress and heat transfer between the CNTs and the polymer matrix.

Authors:
 [1];  [2];  [1];  [1];  [3];  [3];  [3]
  1. Shanghai Univ. of Engineering Science, Shanghai (China)
  2. Shanghai Univ. of Engineering Science, Shanghai (China); Fudan Univ., Shanghai (China)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1378768
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
RSC Advances
Additional Journal Information:
Journal Volume: 6; Journal Issue: 37; Journal ID: ISSN 2046-2069
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; epoxy resin; polydopamine; carbon nanotubes; core-shell structure; surface functionalization

Citation Formats

Ling, Yang, Li, Weizhen, Wang, Baoyu, Gan, Wenjun, Zhu, Chenhui, Brady, Michael A., and Wang, Cheng. Epoxy resin reinforced with nanothin polydopamine-coated carbon nanotubes: a study of the interfacial polymer layer thickness. United States: N. p., 2016. Web. doi:10.1039/c5ra26539h.
Ling, Yang, Li, Weizhen, Wang, Baoyu, Gan, Wenjun, Zhu, Chenhui, Brady, Michael A., & Wang, Cheng. Epoxy resin reinforced with nanothin polydopamine-coated carbon nanotubes: a study of the interfacial polymer layer thickness. United States. doi:10.1039/c5ra26539h.
Ling, Yang, Li, Weizhen, Wang, Baoyu, Gan, Wenjun, Zhu, Chenhui, Brady, Michael A., and Wang, Cheng. Tue . "Epoxy resin reinforced with nanothin polydopamine-coated carbon nanotubes: a study of the interfacial polymer layer thickness". United States. doi:10.1039/c5ra26539h. https://www.osti.gov/servlets/purl/1378768.
@article{osti_1378768,
title = {Epoxy resin reinforced with nanothin polydopamine-coated carbon nanotubes: a study of the interfacial polymer layer thickness},
author = {Ling, Yang and Li, Weizhen and Wang, Baoyu and Gan, Wenjun and Zhu, Chenhui and Brady, Michael A. and Wang, Cheng},
abstractNote = {Carbon nanotubes (CNTs) functionalized by a nanothin poly(dopamine) (PDA) layer were produced by a one-pot, nondestructive approach, with direct polymerization of dopamine on the CNT surface. The thickness of the PDA layer can be well-controlled by the reaction time and the proportion of dopamine, and this thickness is found to be the key factor in controlling the dispersion of CNTs and the extent of the interfacial interactions between the CNT@PDA and epoxy resin. SEM results indicated that the dispersion of CNTs in epoxy was improved significantly by coating a nanothin PDA layer onto the CNT surface. In agreeme nt with this finding, the CNTs functionalized with the thinnest PDA layer provided the best mechanical and thermal properties. This result confirmed that a thinner PDA layer could provide optimized interfacial interactions between the CNT@PDA and epoxy matrix and weaken the self-agglomeration of CNTs, which led to an improved effective stress and heat transfer between the CNTs and the polymer matrix.},
doi = {10.1039/c5ra26539h},
journal = {RSC Advances},
number = 37,
volume = 6,
place = {United States},
year = {2016},
month = {3}
}

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