Impact of particle size in PE/ATH composites: The relationship between the interphase and water uptake

Perthué, Anthony; Bussière, Pierre‐Olivier; Baba, Mohamed; Larché, Jean-François; Thérias, Sandrine; Karasu, Feyza; Croutxé‐Barghorn, Céline

doi:10.1016/j.porgcoat.2017.10.001

Cited by 4 publications

(5 citation statements)

References 22 publications

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“…In Figure 4 it can be observed that Bio-HDPE presented less than 0.05 wt.% water absorption. It is known that polyethylene is a hydrophobic polymer as has been reported by Perthue et al [ 79 ], who reported the same absorption value. In addition, CSF presents the hydrophilic nature characteristic of lignocellulosic fillers.…”

Section: Resultssupporting

confidence: 71%

Contribution to a Circular Economy Model: From Lignocellulosic Wastes from the Extraction of Vegetable Oils to the Development of a New Composite

et al. 2021

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The present works focuses on the development of a novel fully bio-based composite using a bio-based high-density polyethylene (Bio-HDPE) obtained from sugar cane as matrix and a by-product of extraction of chia seed oil (CO) as filler, with the objective of achieving a circular economy model. The research aims to revalorize an ever-increasing waste stream produced by the growing interest in vegetable oils. From the technical point of view, the chia seed flour (CSF) was chemically modified using a silane treatment. This treatment provides a better interfacial adhesion as was evidenced by the mechanical and thermal properties as well as field emission scanning electron microscopy (FESEM). The effect of silane treatment on water uptake and disintegration rate was also studied. On the other hand, in a second stage, an optimization of the percentage of treated CSF used as filler was carried out by a complete series of mechanical, thermal, morphological, colour, water absorption and disintegration tests with the aim to evaluate the new composite developed using chia by-products. It is noteworthy as the disintegration rate increased with the addition of CSF filler, which leads to obtain a partially biodegradable wood plastic composite (WPC) and therefore, becoming more environmentally friendly.

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Section: Resultssupporting

confidence: 71%

Contribution to a Circular Economy Model: From Lignocellulosic Wastes from the Extraction of Vegetable Oils to the Development of a New Composite

et al. 2021

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“…The ATH sample had a specific surface area equivalent to 148 m 2 /g. The ATH micro particle specific surface area generally ranges between 3 and 7 m 2 /g 15,18,19 . However, after calcining ATH and subsequently transforming it into denser crystalline phases, the particles do not reduce in size and show significant increases in specific surface area by 350 m 2 /g 20 and 100 m 2 /g, 21 respectively.…”

Section: Resultsmentioning

confidence: 99%

“…The ATH micro particle specific surface area generally ranges between 3 and 7 m 2 /g. 15,18,19 However, after calcining ATH and subsequently transforming it into denser crystalline phases, the particles do not reduce in size and show significant increases in specific surface area by 350 m 2 /g 20 and 100 m 2 /g, 21 respectively. These variations occur after heat treatment due to the generation of mesoporosity during dehydroxylation.…”

Section: Ath Characterisationmentioning

confidence: 99%

Experimental evaluation of tri‐hydrated aluminium in fire‐retardant properties of glass fibre reinforced polymers

2021

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This paper presents an experimental investigation of alumina trihydrate (ATH) in glass fibre reinforced polymers (GFRP), aiming to determine the influence of ATH concentration on improved flame-retardant properties. For this research, different concentrations of ATH: 37 phr (parts per hundred resin), 40, 47.5, 50 and 55 phr, were added in isophthalic polyester matrix composites reinforced with Eglass fibre through a pultrusion process. These composites were tested for flammability and flame propagation using the mass loss calorimeter cone (MLCC), limiting oxygen index (LOI) and glow wire tests. Simultaneous thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) was performed to evaluate the thermal stability and enthalpy. These analyses assessed the effectiveness and influence of each ATH concentration. It was observed in the MLCC tests that the ATH concentration of 40 phr reduced the peak heat release rate (PHRR) by 27% compared to a composite with 37 phr. All specimens showed the desired commercial result for wires and cables in the glow wire test since the composites reached the maximum glow wire flammability index (GWFI) of 960 C and a glow wire ignition temperature (GWIT) above 900 C. Thus, the addition of ATH above 40 phr leads to an improvement in the flame-retardant properties of glass fibre reinforced polymers.

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“…Aluminium hydroxide, Apyral® 40CD (Nabaltec AG, Germany), is a non-toxic, halogen-free and flame-retardant filler in the polymers applied in the cable industry [6]. Regardless of the practical importance of Apyral, there is a serious problem with handling this material due to its cohesiveness and poor flowability.…”

Section: Methodsmentioning

confidence: 99%

Prospective Application of Response Surface Methodology for Predicting High-Energy Mixing Process Conditions towards Fine Powders Flow Improvement

Leś¹,

Opaliński²

2021

Adv. Sci. Technol. Res. J.

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Planetary ball mill was proposed as an intensive high-energy mixer to obtain flowability improvement of industrially exploited, cohesive and finely comminuted powders via dry coating. Response surface methodology (RSM) coupled with central composite rotatable design (CCRD) was applied as an effective method for the prediction of high-energy mixing conditions. The use of this procedure allows identifying relatively narrow ranges of high-energy mixing parameters (rotating speed of planetary ball mill and mixing time) and the amount of additives used (nanosilica and isopropyl alcohol) providing substantial improvement of the flowability of Aluminium hydroxide (Apyral) and Calcium carbonate powders. In order to find the optimal values of the process parameters, enabling to obtain the lowest values of flowability indices (angle of repose, compressibility index), the desirability function approach was applied. The obtained results may be a basis for developing a general routine allowing mixing parameters to be successfully predicted regarding some physical properties of powders only with no experiments needed.

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Impact of particle size in PE/ATH composites: The relationship between the interphase and water uptake

Cited by 4 publications

References 22 publications

Contribution to a Circular Economy Model: From Lignocellulosic Wastes from the Extraction of Vegetable Oils to the Development of a New Composite

Contribution to a Circular Economy Model: From Lignocellulosic Wastes from the Extraction of Vegetable Oils to the Development of a New Composite

Experimental evaluation of tri‐hydrated aluminium in fire‐retardant properties of glass fibre reinforced polymers

Prospective Application of Response Surface Methodology for Predicting High-Energy Mixing Process Conditions towards Fine Powders Flow Improvement

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