The role of exfoliated kaolinite on crystallinity, ion conductivity, thermal and mechanical properties of poly(ethylene oxide)/kaolinite composites

Chi, Qianwen; Zhen, Ran; Wang, Xingyuan; Yang, Kuo; Jiang, Yinshan; Li, FangFei; Xue, Bing

doi:10.1007/s00289-016-1884-z

Cited by 14 publications

(7 citation statements)

References 44 publications

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“…It has been reported that the heat resistance property of polymers increases by loading nanoadditive due to the restricted segmental motions at the organic–inorganic interface neighborhood of polymer composites . The restriction effect induces rise in the modules and thus improves the heat resistance property of polymer composite.…”

Section: Resultsmentioning

confidence: 99%

Facile preparation of polyamide 6/exfoliated graphite nanoplate composites via ultrasound‐assisted processing

Yang

Zhao

Xia

et al. 2017

Polymer Engineering & Sci

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In this work, we report a facile strategy to prepare polyamide 6/exfoliated graphite nanoplate (PA6/xGNP) nanocomposites by in situ exfoliation of expanded graphite (EG) via ultrasound‐assisted extrusion. The EG was preliminarily exfoliated by ultrasonication, and then blended with PA6 and further exfoliated into graphite nanoplates during the ultrasound‐assisted extrusion process. Compared with chemical exfoliation of EG, ultrasonic exfoliation minimized defects in the carbon layers. Meanwhile, the in situ exfoliation of EG via ultrasound‐assisted extrusion prevented the reagglomeration of xGNPs in the melt blending process. The well‐dispersed xGNP structure significantly improved the mechanical performance of PA6 composites; with an xGNP loading of only 0.5 wt%, the tensile and flexural strengths of the PA6 nanocomposite increased from 65.4 and 67.8 MPa to 90.5 and 91.2 MPa, respectively. The heat deflection temperature also greatly improved from 76.5°C to 115.4°C by adding 1 wt% xGNPs. These results demonstrate a promising approach for large‐scale fabrication of high‐performance polymer/xGNP nanocomposites. POLYM. ENG. SCI., 58:1739–1745, 2018. © 2017 Society of Plastics Engineers

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Section: Resultsmentioning

confidence: 99%

Facile preparation of polyamide 6/exfoliated graphite nanoplate composites via ultrasound‐assisted processing

Yang

Zhao

Xia

et al. 2017

Polymer Engineering & Sci

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“…Some scholars have concluded that the adsorption of CH 4 by clay minerals in shale cannot be neglected, and the adsorption ratio can be as high as 44.12%, especially in shales with low organic content, where the adsorption of clay minerals plays a cardinal role. Under experimental conditions, the influence of the clay mineral type on the CH 4 adsorption capacity was in the following order: montmorillonite > kaolinite > illite. ,, Kaolinite is one of the most common components of clay minerals and has an octahedral structure with 1:1 structural unit layers. , The Si–O tetrahedral and Al–O octahedral surfaces of the kaolinite layers have different hydrophilicity and hydrophobicity. Therefore, it is important to understand the behavior of water in kaolinite pores to study clay mineral–water interaction systems …”

Section: Introductionmentioning

confidence: 96%

Occurrence Characteristics of Water in Nano-Slit Pores under Different Solution Conditions: A Case Study on Kaolinite

Zhou

Song

et al. 2023

ACS Omega

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The presence of water in narrow pore spaces affects the occurrence and flow of methane, which in turn affects shale gas production. Therefore, studying the occurrence and distribution characteristics of water is of great significance to predict gas production. Based on molecular dynamics simulations, this study investigated the occurrence characteristics and influencing variables of liquid water in kaolinite nanopores in situ. Owing to its widespread distribution, kaolinite is the most prevalent clay mineral with two surfaces with different characteristics. Three systems of pure water, a CaCl 2 solution, and a H 2 O/CH 4 mixed phase were created at varied temperatures (80−120 °C) and pressures (70−120 MPa). The presence of gas and water in the nanopores was investigated thoroughly. The results showed that the adsorption of water on the Al−O octahedral surface of kaolinite was not affected by external conditions under in situ conditions, whereas the adsorption of water on the Si−O tetrahedral surface decreased with increasing temperature, but the change was small. When ions were present in the system, the water capacity decreased. Based on the aforementioned results, external conditions, such as temperature and pressure do not affect the basic state of water. However, if there are more than two fluid types in the system, the adsorption of water on the mineral surface is reduced owing to competitive adsorption. In addition, a CH 4 −H 2 O mixed system was simulated, in which methane molecules were distributed in clusters. There are two types of adsorptions in pores: gas−solid interactions and solid−liquid−gas interactions. CH 4 molecules are thought to be clustered in water molecules because of the strong hydrogen bonding interactions among the water.

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“…Using vermiculite flakes as additives, the ionic conductivity, electrochemical stability, and mechanical properties of the composite solid electrolyte have been improved. In the study of Chi et al ., layered exfoliated kaolinite was prepared by intercalation of urea molecules between kaolinite layers and subsequent delamination [66] . Then, PEO/kaolin composites were prepared with exfoliated layered kaolin as filler.…”

Section: Development Of Organic‐inorganic Csementioning

confidence: 99%

Advances in Ordered Architecture Design of Composite Solid Electrolytes for Solid‐State Lithium Batteries

Sun

Liu

et al. 2023

The Chemical Record

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Solid electrolyte lithium batteries are the next generation of advanced energy devices. The incorporation of solid electrolytes can significantly improve the safety issue of lithium‐ion batteries. Organic‐inorganic composite solid electrolytes (CSE) are promising candidates for solid‐state batteries, but their application is mainly limited by low ionic conductivity. Many studies have shown that the architecture of ordered inorganic fillers in CSE can act as fast lithium‐ion transfer channels by auxiliary means, thus significantly improving the ionic conductivities. This review summarises the recent advances in CSE with different dimensional inorganic fillers. Various effective strategies for the construction of ordered structures in CSE are then presented. The review concludes with an outlook on the future development of CSE. This review aims to provide researchers with an in‐depth understanding of how to achieve ordered architectures in CSE for advanced solid state lithium batteries.

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The role of exfoliated kaolinite on crystallinity, ion conductivity, thermal and mechanical properties of poly(ethylene oxide)/kaolinite composites

Cited by 14 publications

References 44 publications

Facile preparation of polyamide 6/exfoliated graphite nanoplate composites via ultrasound‐assisted processing

Facile preparation of polyamide 6/exfoliated graphite nanoplate composites via ultrasound‐assisted processing

Occurrence Characteristics of Water in Nano-Slit Pores under Different Solution Conditions: A Case Study on Kaolinite

Advances in Ordered Architecture Design of Composite Solid Electrolytes for Solid‐State Lithium Batteries

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