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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Steel and Composite Structures, An International Journal Steel and Composite Structures, An International Journal Vol.41 No.4
- 발행연도
- 2021.11
- 수록면
- 609 - 624 (16page)
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초록· 키워드
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In this study, single-step branched polyethyleneimine (PEI)-assisted exfoliation of molybdenum sulfide nanosheets (MoS2-PEI) was carried out. These functionalized MoS2-PEI nanosheets were employed as toughening agents for epoxy composites. The loadings of nanosheets were kept lower than 1 wt.%. The mechanical and thermal properties, and interfacial interactions of epoxy composites were investigated. The epoxy composites have shown ~67% and ~101% enhancements in fracture toughness (KIC) in fracture energy (GIC), respectively, at nanosheets loadings as small as 0.09 wt.% (EP/MoS2-PEI-0.09), KIC has shown a direct linear relationship with the surface free energy and is highest at 52 mJ.m?2 for the EP/MoS2-PEI-0.09 composite. However, the surface free energy values of EP/MoS2-PEI-0.16 and EP/MoS2-PEI-1 composites decreased to 48 mJ.m-2 and 45 mJ.m?2. The overall flexural modulus (E) and strength (σ) were not highly responsive to the addition of the MoS2-PEI nanosheets. Furthermore, the thermal stability and thermomechanical properties of the epoxy composites improved significantly. The optimum MoS2-PEI nanosheet loading was observed to be 0.09 wt.%, beyond this a gradual decrease in thermal stability and mechanical properties was observed. The significant improvement in thermal and mechanical properties of the epoxy composites could be accredited to the good interfacial interaction between the MoS2-PEI nanosheets and epoxy matrix at the interface and the inherent strength, high aspect ratio, and excellent barrier effect of PEI molecules.
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참고문헌 (71)
참고문헌 신청
Hooman Abbasi / 2019 / Recent advances in carbon-based polymer nanocomposites for electromagnetic interference shielding / Progress in Materials Science 103:319~373
Mohammad. Abdullah / 1990 / Effects of common inorganic anions on rates of photocatalytic oxidation of organic carbon over illuminated titanium dioxide / The Journal of Physical Chemistry 94(17):6820~6825
B. Ahmadi-Moghadam / 2015 / Effect of functionalization of graphene nanoplatelets on the mechanical response of graphene/epoxy composites / Materials & Design (1980-2015) 66:142~149
Raul Arenal / 2010 / Boron-nitride and boron-carbonitride nanotubes: synthesis, characterization and theory / Advances in Physics 59(2):101~179
Baker, R. W. / 2012 / Membrane technology and applications / John Wiley & Sons
Mohammad. Abdullah / 1990 / Effects of common inorganic anions on rates of photocatalytic oxidation of organic carbon over illuminated titanium dioxide / The Journal of Physical Chemistry 94(17):6820~6825
B. Ahmadi-Moghadam / 2015 / Effect of functionalization of graphene nanoplatelets on the mechanical response of graphene/epoxy composites / Materials & Design (1980-2015) 66:142~149
Raul Arenal / 2010 / Boron-nitride and boron-carbonitride nanotubes: synthesis, characterization and theory / Advances in Physics 59(2):101~179
Baker, R. W. / 2012 / Membrane technology and applications / John Wiley & Sons
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