Advances in layered double hydroxide (LDH)-based elastomer composites

Basu, Debdipta; Das, Amit; Stöckelhuber, Klaus Werner; Wagenknecht, Udo; Heinrich, Gert

doi:10.1016/j.progpolymsci.2013.07.011

Cited by 222 publications

(145 citation statements)

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“…The Kappa number of such pulps is usually less than 4 even after moderate bleaching stages, and, it is affected by residual lignin, hexenuronic acids as well as other carbohydrates that contain sp 2 Figure 5A1-C1) confirmed that the hydrolytically synthesised particles with pulp fibers appeared similar to typical LDH that has been synthesised by other authors in absence of template structures such as fibres [26,42,43]. The hexagonal shape was especially clear from clay sized particles (insets in Figure 5C1,2).…”

Section: Mineralization and Coating Of Pulp Fibersmentioning

confidence: 99%

“…A great deal of research that concentrates on layered double hydroxide (LDH) particles is related to composite structures with various polymeric matrices [1,2] and sorption processes for water purification applications [3,4], but also to coating technology, especially in corrosion protection [5][6][7], and to different catalytic processes [8,9]. Electrochemical applications, such as batteries [10], capacitors [11] and electrodes [12], in which thin film structures are important [5], are of interest, as well.…”

Section: Introductionmentioning

confidence: 99%

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In Situ Hybridization of Pulp Fibers Using Mg-Al Layered Double Hydroxides

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Reza

et al. 2015

Fibers

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Inorganic Mg2+ and Al 3+ containing layered double hydroxide (LDH) particles were synthesised in situ from aqueous solution onto chemical pulp fibers of pine (Pinus sylvestris). High super saturated (hss) solution with sodium carbonate produced LDH particles with an average diameter of 100-200 nm. Nano-size (70 nm) LDH particles were found from fibers external surface and, to a lesser degree, from the S2 cell wall after synthesis via low super saturated (lss) route. The synthesis via slow urea hydrolysis (Uhyd) yielded micron and clay sized LDH (2-5 µm) and enabled efficient fiber densification via mineralization of S2 fiber wall layer as indicated by TEM and compliance analysis. The Uhyd method decreased fiber compliance up to 50%. Reduction in the polymerisation degree of cellulose was observed with capillary viscometry. Thermogravimetric analysis showed that the hybridization with LDH reduced the exothermic heat, indicating, that this material can be incorporated in flame retardant applications. Fiber charge was assessed by

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Section: Mineralization and Coating Of Pulp Fibersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

In Situ Hybridization of Pulp Fibers Using Mg-Al Layered Double Hydroxides

Lange

Lastusaari

Reza

et al. 2015

Fibers

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“…Anionic clays are not abundant in nature and hydrotalcite (Mg 6 Al 2 (OH) 16 CO 3 .4H 2 O) is an example of anionic clay found in nature. Properties like lamellar structure, ease of synthesis and readily controllable particle size are characteristics that have attracted researchers to study LDH and their applications on polymers, especially elastomers [1] .…”

Section: Introductionmentioning

confidence: 99%

Epoxidized natural rubber and hydrotalcite compounds: rheological and thermal characterization

2017

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ObstractEpoxidized natural rubber (ENR) and synthetic non-modified hydrotalcite (HT) compounds were prepared and evaluated. Natural rubber (NR) was epoxidized with 20.6% of epoxy groups from a chemical modification of the latex. A sulfur-based curing system formulation with accelerators was used. The amounts of HT in the ENR-HT compositions was varied between 0, 2, 3 and 5 phr. All compositions were evaluated as to cure parameters, rheological properties, thermal resistance and crosslink density. The results showed that the mineral filler does not have a significant influence on the cure parameters. Different methods of crosslink density determination were used (swelling at equilibrium and elastic modulus). The results turn out to be equivalent and rise as the amount of filler is increased. The best results were found for the 5 phr hydrotalcite compound (ENR-HT5).

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“…The LDH, a family member of inorganic layered NM, have recently attracted considerable attention because of their wide applications (Olfs et al, 2009;Ladewig et al, 2010;Chakraborty et al, 2012;Yuan et al, 2012;Lonkar et al, 2013;Menezes et al, 2014;Zazoua et al, 2014 (Sun et al,2015). The LDH have a high anion exchange capacity and large surface area due to their structural configuration (Olfs et al, 2009;Basu et al, 2014).…”

Section: Introductionmentioning

confidence: 99%