Effect of Water Absorption on the Mechanical and Dielectric Properties of Nano-Alumina Filled Epoxy Nanocomposites

Hong, Zhao; Li, Robert K.Y.

doi:10.4028/0-87849-427-8.617

Cited by 23 publications

(34 citation statements)

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“…4 showed that T g significantly decreased from 53.1 to 47.5 due to the plasticization effect of absorbed water. Similar observation was obtained by Zhao and Li [21].…”

Section: Flexural Strength and Modulussupporting

confidence: 90%

“…This can be attributed to the increase in the tortuosity effect with increasing filler content [20,21]. Several studies showed that the maximum water absorption of polymer system decreased due the presence of nano-filler [17,[19][20][21]. Becker et al [19] reported a reduction in maximum water uptake for different types of epoxy systems reinforced with layered silicate.…”

Section: Effect Of Nano-filler On the Water Absorption Of Epoxy Basedmentioning

confidence: 94%

“…Becker et al [19] reported a reduction in maximum water uptake for different types of epoxy systems reinforced with layered silicate. Similarly, Zhao and Li [21] investigated the water absorption of Al 2 O 3 /epoxy nanocomposites. Results showed that the water uptake of epoxy decreased after the addition of Al 2 O 3 nanoparticles.…”

Section: Effect Of Nano-filler On the Water Absorption Of Epoxy Basedmentioning

confidence: 98%

“…In general, the presence of nano-fillers is found to decrease the water uptake of modified composites compared to neat epoxy. This phenomenon is due to the excellent barrier properties of these nano-fillers [19][20][21]. The presence of high aspect ratio nano-fillers can create a tortuous pathway for water molecules to diffuse into the composites [21].…”

Section: Effect Of Nano-filler On the Water Absorption Of Epoxy Basedmentioning

confidence: 99%

“…However, the decrease in flexural modulus is more expressed for nanocomposites filled with nanoclay than other nanocomposites. The reduction in flexural modulus can be attributed to the plasticization effect of water absorption on the epoxy matrix [21]. DSC analysis was conducted on neat epoxy before and after water treatment to evaluate the effect of water absorption on T g .…”

Section: Flexural Strength and Modulusmentioning

confidence: 99%

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Effect of water absorption on the mechanical properties of nano-filler reinforced epoxy nanocomposites

Alamri¹,

Low²

2012

Materials & Design

246

150

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a b s t r a c tThis study aimed to investigate the effect of water absorption on the mechanical properties of nano-filler reinforced epoxy nanocomposites as well as to study the influence of different types of nano-fillers such as nano-clay platelets, halloysite nanotubes (HNTs) and nano-silicon carbide (n-SiC) particles on the water absorption behaviour of epoxy based nanocomposites. Results indicated that the addition of nano-fillers into epoxy matrix was found to decrease both water uptake and diffusivity compared to unfilled epoxy. Flexural strength and modulus of epoxy based nanocomposites were found to decrease due to the water absorption. However, the addition of nano-fillers enhanced the flexural strength and modulus of nanocomposites compared to wet unfilled epoxy. Surprising, fracture toughness and impact strength of all types of nanocomposites were found to increase after exposing to water. The presence of nano-fillers increased both fracture toughness and impact strength of nanocomposites compared to wet neat epoxy.Crown

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“…4 showed that T g significantly decreased from 53.1 to 47.5 due to the plasticization effect of absorbed water. Similar observation was obtained by Zhao and Li [21].…”

Section: Flexural Strength and Modulussupporting

confidence: 90%

Section: Effect Of Nano-filler On the Water Absorption Of Epoxy Basedmentioning

confidence: 94%

Section: Effect Of Nano-filler On the Water Absorption Of Epoxy Basedmentioning

confidence: 98%

Section: Effect Of Nano-filler On the Water Absorption Of Epoxy Basedmentioning

confidence: 99%

Section: Flexural Strength and Modulusmentioning

confidence: 99%

See 3 more Smart Citations

Effect of water absorption on the mechanical properties of nano-filler reinforced epoxy nanocomposites

Alamri¹,

Low²

2012

Materials & Design

246

150

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Morphologically dependent alternating‐current and direct‐current breakdown strength in silica–polypropylene nanocomposites

Krentz

Khani

Bell

et al. 2016

J of Applied Polymer Sci

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In this article, we report the synthesis of a new bimodal surface ligand morphology on silica nanoparticles. Combining grafting-to and grafting-from approaches, in this study, we demonstrated the efficacy of anthracene surface modification for improving the dielectric breakdown strength (DBS) under alternating-current and direct-current conditions and that of a matrix-compatible polymer brush for controlling the nanofiller (NF) dispersion. Ligand-modified spherical colloidal SiO 2 nanoparticles (14 nm in diameter) were mixed into polypropylene, and the resulting dispersion was improved over the unmodified particles, as shown with transmission electron microscopy. The results suggest that the electronic structure of the anthracene-modified particle surface was critical to the improvement in DBS. In addition, the DBS of the composite was shown to depend on the dispersion state of the filler and the mode of stress; this indicated that the individually dispersed nanoparticles were not necessarily the optimal morphology for all stress conditions. Additionally, the precise nature of the matrix-compatible brush was less important than the NF dispersion it produced. The bimodal grafted architectural design has provided a promising solution for the control of the dispersion and surface properties, especially for high-molecular-weight polymer matrices.

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Water sorption, antimicrobial activity, and thermal and mechanical properties of chitosan/clay/glycerol nanocomposite films

Kusmono

Abdurrahim

2019

Heliyon

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Chitosan-based nanocomposites films with different clay loadings (0, 5, 10, 15 wt %), with (10, 20, 30 wt%) and without glycerol as plasticizer, were prepared by solution casting. The effects of the addition of clay and glycerol on the thermal, mechanical, water absorption, and antimicrobial activity properties of chitosan/clay nanocomposites films were investigated in this study. XRD results indicated that the intercalated structure was obtained in the chitosan/clay nanocomposites with and without glycerol. The thermal stability of the chitosan was significantly enhanced by the presence of clay and glycerol. It was found that the addition of clay into the chitosan improved significantly the tensile strength and tensile modulus. The highest values in strength and stiffness were achieved for the chitosal/clay nanocomposites with 5 wt% of clay and 20 wt% of glycerol. The addition of both clay and glycerol reduced drastically the ductility of chitosan. The best water resistance was obtained for the chitosan film containing 5 wt% of clay and 20 wt% of glycerol. The chitosan/clay nanocomposite film had potential for application of alternative food packing materials.

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Effect of Water Absorption on the Mechanical and Dielectric Properties of Nano-Alumina Filled Epoxy Nanocomposites

Cited by 23 publications

References 0 publications

Effect of water absorption on the mechanical properties of nano-filler reinforced epoxy nanocomposites

Effect of water absorption on the mechanical properties of nano-filler reinforced epoxy nanocomposites

Morphologically dependent alternating‐current and direct‐current breakdown strength in silica–polypropylene nanocomposites

Water sorption, antimicrobial activity, and thermal and mechanical properties of chitosan/clay/glycerol nanocomposite films

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