Functional clays as reinforcement of nitrile latex films

Cova, Mariajose; Yarza, Florencia; Famá, Lucía; Verdi, Clara; Fernández, Mariela Alejandra; Escobar, Mariano

doi:10.1016/j.porgcoat.2019.01.004

Cited by 5 publications

(4 citation statements)

References 47 publications

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“…The increase in d‐spacing supports the intercalation of modifier molecules between nano‐clay flakes 11,14 . The distance between the MMT lamellae increased from 1.89 to 2.26 nm, indicating that the MQAS modifier has successfully entered the silicate layer of the MMT, and the MMT has been peeled off to a certain extent 8,38 . In combination with the XRD results, the findings show that ultrasound causes the part of the layered MMT to peel off without changing the layer spacing 49 .…”

Section: Resultsmentioning

confidence: 64%

“…The tan δ will slightly decrease with the continuous reconstruction of the system structure and the new network structure formation. In comparison with the SBR/MMT composite, considering the restricted movement of polymer chains, the tan δ of the SBR/FOSM composites substantially decreased with the increase of MQAS content 9,38 . Hence, the interface between the organically modified MMT and the SBR is firmly bonded.…”

Section: Resultsmentioning

confidence: 94%

“…The entanglement of polymer chains around the filler and the reinforcement of nanofillers can prevent the chains from sliding with each other, and the reinforcement effect is obvious 15,28,37 . In addition, the organic ammonium cations inside the FOSM powders can interact strongly with the sulfur‐based cross‐linking system, thus increasing the stability of the cross‐linking network structure 38,39 . Accordingly, the tan δ of the samples decreased.…”

Section: Resultsmentioning

confidence: 99%

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Flame‐retardant behavior and mechanism of theSBR/MMTcomposites modified by melamine matrix modifier

Cheng

Xuan

Tang

et al. 2021

J of Applied Polymer Sci

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Melamine quaternary ammonium salt (MQAS), a novel flame‐retardant intercalation modifier, was used to prepare the flame‐retardant organic montmorillonite (FOSM), and which was added to SBR by a two‐roll mixing and molding process to prepared the SBR/FOSM composites. The synergistic flame‐retardant effects of sodium‐based montmorillonite (MMT) and MQAS were investigated by the various methods. The LOI value of SBR was only 19.1%, and FOSM‐4 increased the LOI value of SBR to 24.3%. The cone calorimetry test showed that compared with SBR, the total heat release and the peak heat release rate of SBR/FOSM were reduced by 81.39% and 86.08%, respectively. The analysis of MMT after modification showed that the grafting rate of MQAS was about 10% and the interlayer spacing of MMT was enlarged by about 20%. The synergy of MQAS and MMT not only effectively solves the violent droplet of pure SBR combustion, but also avoids the curling problem of only adding MMT. The char morphology and TG‐FTIR showed that FOSM had dual flame‐retardancy in the condensed phase and the gas phase. The synergistic flame‐retardant effect of phosphorus‐free flame‐retardant modifier and MMT will open up new possibilities for flame‐retardant elastomer composites.

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Section: Resultsmentioning

confidence: 64%

Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 99%

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Flame‐retardant behavior and mechanism of theSBR/MMTcomposites modified by melamine matrix modifier

Cheng

Xuan

Tang

et al. 2021

J of Applied Polymer Sci

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“…[33,34] The increased interlayer spacing further confirms the successful embedding of calcium stearate between the layers of MMT, effectively expanding the interlayer spacing of MMT. MMT underwent partial exfoliation under mechanical force, [35] further enhancing the lamellar separation of MMT-St.…”

Section: Structural Characterization Of Mmtmentioning

confidence: 99%

Stearate‐Modified Montmorillonite and Polylactic Acid Synergistically Enhanced the Microcellular of Thermoplastic Polyurethane Elastomer Foam and Improved Its Dimensional Stability

Wu,

Shao,

et al. 2024

Adv Eng Mater

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Thermoplastic polyurethane elastomer (TPU) is a commonly used material for foam preparation. However, its application is hindered by significant shrinkage behavior. To reduce the foam shrinkage, polylactic acid (PLA) and calcium stearate‐modified montmorillonite (MMT‐St) were incorporated into the polyurethane matrix. The TPU/PLA/MMT‐St composite foams were formed using an intermittent supercritical carbon dioxide (scCO2) foaming process. The addition of PLA inhibited the relaxation of TPU chain segments, while the introduction of calcium stearate (GaSt2) improved the dispersion of MMT within the matrix, increased the nucleation sites of cell growth, and improved cell structure. The cell diameter decreased from 10 to 4 μm, while the cell density increased from 4.1×1012 to 15.8×1012 cell/cm3. In addition, the cell distribution range narrowed from 4‐19 to 2‐6 μm. Incorporating MMT‐St increased the crystallinity and thermal stability of TPU/PLA, mitigated chain relaxation at room temperature, and enhanced foam dimensional stability. As a result, this led to a decrease in shrinkage rate from 27.5 to 5%. As both matrices of the material are thermoplastic, this composite foam possesses recyclability with enhanced material utilization.This article is protected by copyright. All rights reserved.

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Study on the structural and properties of composite films prepared by blending EUL and NBRL

Zhong,

Xu,

Lian

et al. 2024

Polymer

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Functional clays as reinforcement of nitrile latex films

Cited by 5 publications

References 47 publications

Flame‐retardant behavior and mechanism of theSBR/MMTcomposites modified by melamine matrix modifier

Flame‐retardant behavior and mechanism of theSBR/MMTcomposites modified by melamine matrix modifier

Stearate‐Modified Montmorillonite and Polylactic Acid Synergistically Enhanced the Microcellular of Thermoplastic Polyurethane Elastomer Foam and Improved Its Dimensional Stability

Study on the structural and properties of composite films prepared by blending EUL and NBRL

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