Water transport in aluminium oxide-poly(ethylene-co-butyl acrylate) nanocomposites

Nordell, Patricia; Nilsson, Fritjof; Hedenqvist, Mikael S.; Hillborg, Henrik; Gedde, Ulf W.

doi:10.1016/j.eurpolymj.2011.09.013

Cited by 12 publications

(6 citation statements)

References 13 publications

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“…This article presents examples of composites with uniformly distributed nanoparticles together with examples of “failures,” i.e., composites with poorly dispersed nanoparticles. The water uptake and the interaction between phenolic antioxidants and uncoated and coated nanoparticles are reported in two follow‐up articles 23, 24…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of aluminum oxide–poly(ethylene‐co‐butyl acrylate) nanocomposites

Nordell

Nawaz

Azhdar

et al. 2011

J of Applied Polymer Sci

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This article describes the preparation and characterization of composites containing poly(ethylene-cobutyl acrylate) (EBA-13 and EBA-28 with 13 and 28 wt % butyl acrylate, respectively) and 2-12 wt % (0.5-3 vol %) of aluminum oxide nanoparticles (two types differing in specific surface area and hydroxyl-group concentration; uncoated and coated with, respectively, octyltriethoxysilane and aminopropyltriethoxysilane). A greater surface coverage was obtained with aminopropyltriethoxysilane than with octyltriethoxysilane. An overall good dispersion was obtained in the EBA-13 composites prepared by extrusion compounding. Composites with octyltriethoxysilanecoated nanoparticles showed the best dispersion. The addition of the nanoparticles to EBA-28 resulted in poor dispersion, probably due to insufficiently high shear forces acting during extrusion mixing which were unable to break down nanoparticle agglomerates. The nanoparticles had no effect on the crystallization kinetics in the EBA-13 composites, but in the EBA-28 composites the presence of the nanoparticles led to an increase in the crystallization peak temperature, suggesting that the nanoparticles had a nucleating effect in this particular polymer. V C 2011 Wiley Periodicals, Inc. J Appl Polym Sci 125: [975][976][977][978][979][980][981][982][983] 2012

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Section: Introductionmentioning

confidence: 99%

Preparation and characterization of aluminum oxide–poly(ethylene‐co‐butyl acrylate) nanocomposites

Nordell

Nawaz

Azhdar

et al. 2011

J of Applied Polymer Sci

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“…These results, in addition to FTIR measurements (Figure S3, Supporting Information), indicate that the AlO x clusters induce water absorption into the hybrid film. Oxide fillers have been previously reported to induce water absorption in nanocomposites. , The study of Nordell et al has shown that the increased water uptake in nanocomposites is correlated to the increased concentration of polar groups associated with aluminum-oxide nanoparticles . A recent study by Losego et al studied the aqueous stability of amorphous alumina thin films fabricated via atomic layer deposition .…”

Section: Resultsmentioning

confidence: 99%

Mechanical Behavior of Hybrid Thin Films Fabricated by Sequential Infiltration Synthesis in Water-Rich Environment

Keren,

Bukowski,

Barzilay

et al. 2023

ACS Appl. Mater. Interfaces

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Sequential infiltration synthesis (SIS) is an emerging technique for fabricating hybrid organic−inorganic materials with nanoscale precision and controlled properties. Central to SIS implementation in applications such as membranes, sensors, and functional coatings is the mechanical properties of hybrid materials in water-rich environments. This work studies the nanocomposite morphology and its effect on the mechanical behavior of SIS-based hybrid thin films of AlO x -PMMA under aqueous environments. Water-supported tensile measurements reveal an unfamiliar behavior dependent on the AlO x content, where the modulus decreases after a single SIS cycle and increases with additional cycles. In contrast, the yield stress constantly decreases as the AlO x content increases. A comparison between water uptake measurements indicates that AlO x induces water uptake from the aqueous environment, implying a "nanoeffect" stemming from AlO x −water interactions. We discuss the two mechanisms that govern the modulus of the hybrid films: softening due to increased water absorption and stiffening as the AlO x volume fraction increases. The decrease in the yield stress with SIS cycles is associated with the limited mobility and extensibility of polymer chains caused by the growth of AlO x clusters. Our study highlights the significance of developing hybrid materials to withstand aqueous or humid conditions which are crucial to their performance and durability.

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“…Consequently, with sufficiently large Al 2 O 3 particles, the composite solubility S decreases proportionally with the particle volume fraction φ f , i.e., S = S m × (1 − φ f ). However, in several nanocomposite studies, the composite solubility increased with increasing nanoparticle content [8,45]. The reason for this discrepancy is that surface effects dominate at the nanoscale.…”

Section: Influence Of Particle Size On the Solubilitymentioning

confidence: 99%

“…The linear functions are due to (1) the fact that an isolated nanoparticle can adsorb a fixed amount of acetophenone onto its surface and (2), at low filler content, the particles are well separated and do not interfere with each other [8]. The nanoparticles had a lower impact on the acetophenone solubility than on the water solubility [8,45]. However, the results still show that metal oxide nanoparticles such as Al 2 O 3 can adsorb polar molecules, also larger than water, and thereby clean the surrounding polymer matrix from conductivity influencing impurities.…”

Section: Solubilitymentioning

confidence: 99%

“…The reason for this discrepancy is that surface effects For (non-polar) limonene in extruded LDPE at 21 • C, slightly S-shaped sorption curves were observed (Figure 4). S-shaped curves are typically caused by the time-dependent and non-symmetric swelling of the polymer matrix [40,45]. The addition of nanoparticles (Al 2 O 3 or C 8 -Al 2 O 3 ) did not change the limonene diffusivity D (Equation (3)) = (25-32) × 10 −9 cm 2 s −1 (Table 2).…”

Section: Influence Of Particle Size On the Solubilitymentioning

confidence: 99%

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Solubility and Diffusivity of Polar and Non-Polar Molecules in Polyethylene-Aluminum Oxide Nanocomposites for HVDC Applications

et al. 2020

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The best commercial high-voltage insulation material of today is (crosslinked) ultra-pure low-density polyethylene (LDPE). A 100-fold decrease in electrical conductivity can be achieved by adding 1–3 wt.% of well-dispersed inorganic nanoparticles to the LDPE. One hypothesis is that the nanoparticle surfaces attract ions and polar molecules, thereby cleaning the surrounding polymer, and thus reducing the conductivity. LDPE-based nanocomposites with 1–12 wt.% octyl-coated aluminum oxide nanoparticles were prepared and the sorption and desorption of one polar compound (acetophenone, a crosslinking by-product) and one non-polar compound of a similar size (limonene) were examined. Since the uptake of acetophenone increased linearly with increasing filler content, whereas the uptake of limonene decreased, the surface attraction hypothesis was strengthened. The analytical functions for predicting composite solubility as a function of particle size and filler fraction were derived using experimental solubility measurements and Monte Carlo simulations.

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Water transport in aluminium oxide-poly(ethylene-co-butyl acrylate) nanocomposites

Cited by 12 publications

References 13 publications

Preparation and characterization of aluminum oxide–poly(ethylene‐co‐butyl acrylate) nanocomposites

Preparation and characterization of aluminum oxide–poly(ethylene‐co‐butyl acrylate) nanocomposites

Mechanical Behavior of Hybrid Thin Films Fabricated by Sequential Infiltration Synthesis in Water-Rich Environment

Solubility and Diffusivity of Polar and Non-Polar Molecules in Polyethylene-Aluminum Oxide Nanocomposites for HVDC Applications

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