Study of montmorillonite modification technology using polyvinylpyrrolidone

Krasinskyi, Volodymyr; Malinowski, Rafał; Bajer, Krzysztof; Rytlewski, Piotr; Miklaszewski, Andrzej

doi:10.1016/j.arabjc.2023.105296

Cited by 2 publications

(5 citation statements)

References 41 publications

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“…This indicates the entry of PVP macromolecules into the interlayer space of MMT, that is, its intercalation. The formation of an intercalated structure in the sample was confirmed in a previous work [46]. At other ratios of MMT and PVP, all the characteristic reflections in the MMT/PVP-bottom samples are shifted towards larger 2Θ angles compared to the pure MMT (Figure 1, curves b-e).…”

Section: Crystal Structure Of the Modified Mmtsupporting

confidence: 84%

“…MMT samples are prepared using a previously developed MMT modification method using PVP in an aqueous colloidal solution with the subsequent selection of three separate solution fractions [46]. Colloidal solutions of MMT and PVP are prepared as described in the previous work [46]. However, this work, unlike the previous one, studied nanocomposites obtained with different ratios of MMT/PVP in the initial solution.…”

Section: Preparation Of Modified Mmt Samplesmentioning

confidence: 99%

“…The intensity of M(001), M(002), and Q(101) reflections of these samples depends on the MMT/PVP ratio and is the highest for samples of pure MMT and MMT/PVP = 1:2. It can be argued that all MMT/PVP-middle samples have a flocculated structure (partially intercalated and exfoliated structure) [46] regardless of the initial ratio of components. It can be assumed that the MMT/PVP-middle = 3:1 contains the least amount of intercalated MMT.…”

Section: Crystal Structure Of the Modified Mmtmentioning

confidence: 99%

“…Therefore, the mass ratio of the components during the obtaining of MMT/PVP nanocomposites significantly affects the yield and structure of the final products. In a previous work [46], we presented a new method of MMT modification using PVP. The modification process is carried out in an aqueous solution with a mass ratio of MMT/PVP = 1:2 and subsequent solution separation into three fractions (nanocomposites of different structures).…”

Section: Introductionmentioning

confidence: 99%

“…The work task is also to compare the structure and properties of these MMT-s with the nanocomposite of the composition MMT/PVP = 1:12, obtained similarly but without solution fractionation. This ratio of MMT/PVP is chosen because it has been established in previous work [46] that exfoliated MMT contains about 93 wt% PVP.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of the Properties and Structure of Montmorillonites Modified with Polyvinylpyrrolidone

Krasinskyi,

Dulebova,

Malinowski

et al. 2024

Applied Sciences

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The modification method of aluminosilicate clays and the modifier content have a decisive influence on the structure and properties of the obtained nanocomposites. Therefore, the development and research of new techniques of nanoclays modification are of great importance for polymer nano-chemistry. The work studied the modification of montmorillonite (MMT) using polyvinylpyrrolidone (PVP) in an aqueous colloidal solution with the subsequent separation of three separate fractions of the solution according to the previously developed method. The influence of the initial mass ratio of components (MMT/PVP) on the structure and thermal properties of the modified MMT in each solution layer was determined. Scanning electron microscopy (SEM), X-ray diffraction (XRD), thermal gravimetry (TG), differential scanning calorimetry (DSC), and Fourier-transform infrared (FTIR) spectroscopy were used for research. It was established that the mass ratio of components in the initial solution has almost no effect on the structure of MMT in the top and middle solution layers, but significantly affects the yield of final products. Different structures can be obtained in the bottom layer of the solution. Still, intercalated MMT was obtained exclusively at the mass ratio of MMT/PVP = 1:2. In addition, the work investigated the structure and thermal properties of modified montmorillonites with the same PVP content, and it has been proven that such composites have dissimilar structures and properties when obtained by different methods.

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Section: Crystal Structure Of the Modified Mmtsupporting

confidence: 84%

Section: Preparation Of Modified Mmt Samplesmentioning

confidence: 99%

Section: Crystal Structure Of the Modified Mmtmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Comparison of the Properties and Structure of Montmorillonites Modified with Polyvinylpyrrolidone

Krasinskyi,

Dulebova,

Malinowski

et al. 2024

Applied Sciences

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Biopolymers-Clay Nanocomposites: Synthesis Pathways, Properties, and Applications

Zohra Zeggai,

Touahra,

Labied

et al. 2024

Nanotechnology and Nanomaterials

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Biopolymer-clay nanocomposites have attracted great attention worldwide from both academic and industrial points of view. This chapter aims to report on very recent developments in types of biopolymer-clay nanocomposites, their constituents, synthetic routes, properties, and their uses in various fields. This new family of composite materials frequently exhibits remarkable improvements in material properties when compared with the matrix biopolymers alone or conventional micro- and macrocomposites. The quality of such materials is a major environmental concern, and the production of nanocomposites may decrease the impact of the problem. Biopolymer reinforced with nanofillers is a potential solution to the issue. Functional nanomaterials can be fabricated by the effective interaction between nanofillers and eco-friendly biopolymers. This interaction also enhances physicochemical features and biological properties. They do not only own exceptional properties but can also be made to display combination of properties for multifunctional applications.

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Study of montmorillonite modification technology using polyvinylpyrrolidone

Cited by 2 publications

References 41 publications

Comparison of the Properties and Structure of Montmorillonites Modified with Polyvinylpyrrolidone

Comparison of the Properties and Structure of Montmorillonites Modified with Polyvinylpyrrolidone

Biopolymers-Clay Nanocomposites: Synthesis Pathways, Properties, and Applications

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