Effects of functionalized graphene nanoplatelets on the morphology and properties of epoxy resins

Fuzhong Wang, Lawrence T. Drzal, Yan Qin, Zhixiong Huang

Research output: Contribution to journalArticle

  • 6 Citations

Abstract

Graphene nanoplatelets (GnPs) were successfully functionalized with a liquid rubber, amine-terminated poly(butadiene-co-acrylonitrile) (ATBN), and the functionalized GnPs (ATBN-GnP) were characterized by microscopic and spectroscopic techniques. Different amounts of ATBN-GnP and pristine GnP were individually incorporated into an epoxy resin to fabricate epoxy composites. Compared with the pristine GnP, ATBN-GnP demonstrated stronger ameliorating effects due to an enhanced GnP-epoxy interfacial adhesion. At 5.0 wt% GnP content, the flexural modulus of GnP/epoxy composite increased by 18.1%, whereas the ATBN-GnP improved the flexural modulus by 22.1% at the same fraction. A remarkable enhancement of quasi-static fracture toughness was obtained at 5.0 wt% GnP and 5.0 wt% ATBN-GnP with 76.2% and 92.8% increase, respectively. Incorporation of 5.0 wt% ATBN-GnP improved thermal conductivity of the neat epoxy by 133.6%, and the thermal conductivity of 5.0 wt% ATBN-GnP/epoxy is about 16% higher than that of the pristine GnP/epoxy. The superior reinforcement of ATBN-GnP is attributed to the strong interfacial bonding between ATBN-GnP and epoxy matrix as confirmed by microscopic observations.

LanguageEnglish (US)
Pages525-536
Number of pages12
JournalHigh Performance Polymers
Volume28
Issue number5
DOIs
StatePublished - Jun 1 2016

Profile

Epoxy Resins
Graphite
Epoxy resins
Graphene
Thermal conductivity
Acrylonitrile
Rubber
Composite materials
Butadiene
Amines
Fracture toughness
Reinforcement
Adhesion
Liquids
1,3-butadiene

Keywords

  • Epoxy resins
  • fracture toughness
  • graphene nanoplatelets
  • mechanical properties
  • nanocomposites
  • thermal properties

ASJC Scopus subject areas

  • Materials Chemistry
  • Polymers and Plastics
  • Organic Chemistry

Cite this

Effects of functionalized graphene nanoplatelets on the morphology and properties of epoxy resins. / Wang, Fuzhong; Drzal, Lawrence T.; Qin, Yan; Huang, Zhixiong.

In: High Performance Polymers, Vol. 28, No. 5, 01.06.2016, p. 525-536.

Research output: Contribution to journalArticle

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abstract = "Graphene nanoplatelets (GnPs) were successfully functionalized with a liquid rubber, amine-terminated poly(butadiene-co-acrylonitrile) (ATBN), and the functionalized GnPs (ATBN-GnP) were characterized by microscopic and spectroscopic techniques. Different amounts of ATBN-GnP and pristine GnP were individually incorporated into an epoxy resin to fabricate epoxy composites. Compared with the pristine GnP, ATBN-GnP demonstrated stronger ameliorating effects due to an enhanced GnP-epoxy interfacial adhesion. At 5.0 wt{\%} GnP content, the flexural modulus of GnP/epoxy composite increased by 18.1{\%}, whereas the ATBN-GnP improved the flexural modulus by 22.1{\%} at the same fraction. A remarkable enhancement of quasi-static fracture toughness was obtained at 5.0 wt{\%} GnP and 5.0 wt{\%} ATBN-GnP with 76.2{\%} and 92.8{\%} increase, respectively. Incorporation of 5.0 wt{\%} ATBN-GnP improved thermal conductivity of the neat epoxy by 133.6{\%}, and the thermal conductivity of 5.0 wt{\%} ATBN-GnP/epoxy is about 16{\%} higher than that of the pristine GnP/epoxy. The superior reinforcement of ATBN-GnP is attributed to the strong interfacial bonding between ATBN-GnP and epoxy matrix as confirmed by microscopic observations.",
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