Use of Zinc-Aluminum Layered Double Hydroxides as Nanofillers of Thermoplastic Vulcanizates

Вольфсон, С. И.; Nikiforov, A.A.

doi:10.1134/s107042722008011x

Cited by 2 publications

(2 citation statements)

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“…EPDM can be blended with polypropylene (PP) in the presence of LDH to form a dynamically vulcanised thermoplastic elastomer. Vol'fson and Nikiforov [56] added stearate-modified Zn-Al LDH to a 60:40 weight ratio EPDM/PP blend. They found that the stearate modification improved compatibility between the LDH and polymer blend.…”

Section: Ethylene Propylene Diene Monomer Rubber (Epdm)mentioning

confidence: 99%

“…The study by Acharya et al [53] was omitted as mechanical property values were not discussed. An approximation of the wt % loading of LDH in the study by Vol'fson and Nikiforov [56] was made as limited data were available. According to Thakur et al [57], XNBR is a terpolymer containing acrylonitrile, butadiene and monomers that have carboxyl groups such as acrylic acid and methacrylic acid.…”

Section: Ethylene Propylene Diene Monomer Rubber (Epdm)mentioning

confidence: 99%

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Systematic Literature Review of the Effect of Layered Double Hydroxides on the Mechanical Properties of Rubber

Tonder

Labuschagne

2021

Polymers

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Layered double hydroxides (LDHs) have attracted interest as reinforcing fillers in elastomers due to their ease of synthesis and customisability. A systematic review was performed on the effect of LDHs on the mechanical properties of elastomers using the Scopus database. Of the 61 articles relevant to the search criteria, the majority were published on polyurethane (PU) and nitrile butadiene rubber (NBR). Mg-Al LDH was used in most of the studies and Zn-Al LDH was used second most common. LDH can act as a reinforcing filler, typically increasing tensile strength even at low concentrations, so it could be used as an alternative to traditional reinforcing fillers for elastomers. LDH can also be made a functional filler by selecting the right metals and interlayer anions. It was found that Mg-Al LDH and Zn-Al LDH can both participate in crosslinking reactions and can replace MgO and ZnO, respectively. Less Zn ions are required for crosslinking when LDH is used than when ZnO is used, making LDH more environmentally friendly. Organic modification is usually required to improve compatibility with the elastomer matrix, especially in non-polar elastomers. It enables exfoliation of the LDH and intercalation of polymer chains into the LDH interlayer to occur. Organic modifiers can also be used to functionalise the LDH. Stearic acid used in crosslinking systems can be replaced by stearate anions from stearate-modified LDH.

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Section: Ethylene Propylene Diene Monomer Rubber (Epdm)mentioning

confidence: 99%