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Yang, Hongmei; Zheng, Qiang

doi:10.1023/a:1025715514900

Cited by 11 publications

(3 citation statements)

References 11 publications

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“…They observed that the flow behavior of poly(ε-caprolactone) (PCL) and nylon-6-based nanocomposites differed significantly from that of the corresponding neat matrices. The linear dynamic mechanical properties of polymer/clay nanocomposites have been intensively studied for a wide range of polymer matrices including nylon-6 with various matrix molecular weights, (low-density polyethylene)/(ethylene vinyl acetate copolymer) blend, polystyrene−polyisoprene (PS−PI) block copolymers, , poly(butylene succinate),10a and other systems. , On the other hand, although liquid rubber has been widely used in industrial applications, few works were reported on liquid rubber/clay nanocomposite gels except some recent studies. − …”

Section: Introductionmentioning

confidence: 99%

Unusual Rheological Behavior of Liquid Polybutadiene Rubber/Clay Nanocomposite Gels: The Role of Polymer−Clay Interaction, Clay Exfoliation, and Clay Orientation and Disorientation

et al. 2006

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The rheological properties of liquid polybutadiene rubber/organo-clay nanocomposite gels were investigated by rheological experiments, focusing on the effects of clay exfoliation and orientation−disorientation as well as polymer−clay interaction and temperature. Both irreversible and reversible viscosity transitions were observed in the temperature range from 26 to 136 °C in steady shear experiments on as-prepared and exfoliated samples. These transitions depend strongly on the end groups, molecular weight of the liquid rubber, and the shear field. The irreversible transition is attributed to the exfoliation of the clay, and the reversible transition can be understood as a shear-induced orientation−disorientation transition of the clay sheets. Polymer−clay interaction is confirmed to be a key controlling factor of the orientation−disorientation transition, whereas the shear field plays a critical role to induce such a transition. To our knowledge, this is the first rheological observation of the in-situ exfoliation process and the shear-induced orientation−disorientation transition of layered silicate in polymer/organo-clay nanocomposites. A tentative model was suggested on the basis of the clay exfoliation and orientation−disorientation transition, and the model is used to explain the observed unique rheological behavior.

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Section: Introductionmentioning

confidence: 99%

Unusual Rheological Behavior of Liquid Polybutadiene Rubber/Clay Nanocomposite Gels: The Role of Polymer−Clay Interaction, Clay Exfoliation, and Clay Orientation and Disorientation

et al. 2006

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“…We previously [4,5] studied the adsorption properties of bentonites of several modifications with respect to nitro-, amino-, and hydroxy derivatives of benzene. The results obtained allowed us to assume that the sorption activity of modified bentonites will ensure the extraction of not only aromatic compounds, but also other pollutants from water by 80-92% [6][7][8][9]. Ways were outlined for further study of the properties of modified bentonites to further increase their adsorption activity.…”

Section: Introductionmentioning

confidence: 98%

Purification of water environments from heavy metals ions pollution

Atamanova

Тихомирова

Podoksenov

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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Modern methods for extracting heavy metal ions from industrial wastewater are quite diverse. The purpose of the study was to develop and justify new technologies for purification of aqueous media, including adsorption purification, from heavy metal ions (by the example of Ni2+ and Cd2+ ions). Laboratory studies have established that the degree of adsorption extraction of Ni2+ ions by the sorption material from bentonite modified with carbon nanotubes and fired at a temperature of 550 °C increases by 13-14 % due to its activation with 18 % HCl solution and 38 % CaCl2 solution, and the degree of adsorption extraction of Cd2+ ions with this activation of the sorbent, it increases by 16-17 %. A technological scheme of a water purification station is proposed, which includes highly efficient adsorption filters with sorption material from bentonite of the specified modification and acid-salt activation.

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“…Among the pollutants that clay minerals can selectively extract, we can highlight the adsorption of heavy metals, surfactants or aromatics and even biologically active compounds, which are so resistant that they cannot be removed by other methods [16]. Between the wide variety of clay minerals, the phyllosilicates have received much attention due to their chemical composition as well as their different morphologies that they can naturally acquire [17,18]. In some cases, the use of these fibrous phyllosilicates has generated controversy due to the carcinogenic activity of these minerals seems to be mostly dependent on their physico-chemical properties (silanol groups), crystallinity and fiber length, which are occasionally related to their genetic environment.…”

mentioning

confidence: 99%

Adsorption of Salmonella in Clay Minerals and Clay-Based Materials

et al. 2020

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A series of clay minerals and clay-based materials have been tested to eliminate one of the most dangerous bacteria we can find in the water: Salmonella. It has been proven that the use of clays and their PCH materials can be a suitable method for removing Salmonella from water. The results of this initial study show that all the materials analyzed have great salmonella adsorption capacities ranging from the lowest value observed in the mont-PCH sample (0.29 × 1010 CFU g−1) to the highest value observed in the natural palygorskite sample (1.52 × 1010 CFU g−1). Macroporosity, accessible external surface area, and the presence of silanol groups in the external surface of the particles appears to be the controlling factors for Salmonella adsorption capacity while it seems that the structural characteristics of the clay minerals and their respective PCH does not affect the adsorption capacity.

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Cited by 11 publications

References 11 publications

Unusual Rheological Behavior of Liquid Polybutadiene Rubber/Clay Nanocomposite Gels: The Role of Polymer−Clay Interaction, Clay Exfoliation, and Clay Orientation and Disorientation

Unusual Rheological Behavior of Liquid Polybutadiene Rubber/Clay Nanocomposite Gels: The Role of Polymer−Clay Interaction, Clay Exfoliation, and Clay Orientation and Disorientation

Purification of water environments from heavy metals ions pollution

Adsorption of Salmonella in Clay Minerals and Clay-Based Materials

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