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

Journal Article · · RSC Advances
DOI:https://doi.org/10.1039/c5ra26539h· OSTI ID:1378768
 [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)
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.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1378768
Journal Information:
RSC Advances, Journal Name: RSC Advances Journal Issue: 37 Vol. 6; ISSN 2046-2069; ISSN RSCACL
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (3)

Versatile Surface Modification Using Polydopamine and Related Polycatecholamines: Chemistry, Structure, and Applications journal September 2017
Application of polydopamine in biomedical microfluidic devices journal February 2018
Low effective content of reduced graphene oxide/silver nanowire hybrids in epoxy composites with enhanced conductive properties journal March 2019

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