Membranes of polyamide 6/clay/salt for water/oil separation

Filho, Edson Antônio dos Santos; Medeiros, Keila Machado de; Araújo, Edcleide Maria; Ferreira, Rodholfo da Silva Barbosa; Oliveira, Sandriely Sonaly Lima; Medeiros, Vanessa da Nobréga

doi:10.1088/2053-1591/ab3754

Cited by 11 publications

(4 citation statements)

References 42 publications

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“…Intensive research is carried out in rubber mixtures too. The first and the most studied thermoplastics for the synthesis of polymer-clay nanocomposites has been polyamide 6 [86][87][88][89][90][91]. Polyamide 6/clay hybrids were discovered by Toyota re-searchers in the early nineties [92][93][94][95] and nowadays they are used in automotive parts.…”

Section: Polymer Matrixmentioning

confidence: 99%

Applications of Clays in Nanocomposites and Ceramics

Kalendova,

Kupkova,

Urbaskova

et al. 2024

Minerals

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Clays and clay minerals are common natural materials, the unique properties of which have attracted the interest of the industry, especially because these materials are easily available, cheap, and non-toxic. Clays and clay minerals are widely used in many applications, such as in ceramic production, in the clarification of liquids, pollutant adsorbers, filler in composites and nanocomposites, soil amendments, in pharmacy, etc. This review assesses the development in the area of clay application in nanocomposites and ceramics. The first part of this study covers polymer/clay nanocomposites. Topics of interest include nanofiller sources for polymer nanocomposites, the possible ways of clay modification, polymer/clay nanocomposite classification and their processing, and polymer matrix overview with possible enhancement of nanocomposite properties. Some of the applications have already been commercialized. Approximately 80% of the polymer/clay nanocomposites are destined for the automotive, aeronautical, and packaging industries. The second part of this study describes ceramic materials with a focus on silicate ceramics. Talc and kaolinite represent the main natural raw materials for traditional ceramic applications. Less traditional cordierite, steatite, and forsterite could offer property enhancement and seem to be useful in electronics, electrical engineering, catalysts, solar thermal storage, or medical applications.

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Section: Polymer Matrixmentioning

confidence: 99%

Applications of Clays in Nanocomposites and Ceramics

Kalendova,

Kupkova,

Urbaskova

et al. 2024

Minerals

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“…Polymer membranes are commonly used in membrane separation technology due to their high selectivity, ease of control, and uniform structure [14][15][16]. According to the polymer materials, the polymer membranes can be divided into polyamide (PA) membranes [17], polysulfone (PSU) membranes [18], polyvinylidene fluoride (PVDF) membranes [19], polyethersulfone (PES) membranes [20] and polyacrylonitrile (PAN) membranes [21]. Inorganic membranes have a wide range of applications in the field of membrane separation due to their high temperature stability, chemical inertness, and resistance to contamination [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Recent advances in membrane technologies applied in oil–water separation

Huang,

Ran,

Sun

et al. 2024

Discover Nano

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Effective treatment of oily wastewater, which is toxic and harmful and causes serious environmental pollution and health risks, has become an important research field. Membrane separation technology has emerged as a key area of investigation in oil–water separation research due to its high separation efficiency, low costs, and user-friendly operation. This review aims to report on the advances in the research of various types of separation membranes around emulsion permeance, separation efficiency, antifouling efficiency, and stimulus responsiveness. Meanwhile, the challenges encountered in oil–water separation membranes are examined, and potential research avenues are identified.

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“…Some other CNTs, which are functionalized by special groups such as hyperbranched poly(urea-urethane)s [29], aromatic amine [30], tannic acid-FeIII [31]K were also applied to enhance properties of PA-TFC. The common mechanism of such membranes is that the TFC was formed by condensation between carboxylic groups on the sidewall of CNTs and the amine groups of precursors or their interchanged positions [16,27,28,[32][33][34][35][36]. The composite PA-based composite layer was formed during the condensation polymerization [16,27,28,[32][33][34][35].…”

Section: Introductionmentioning

confidence: 99%

Circulating-infiltrating preparation of hydrophilic nylon 6 membrane to hydrophobic MWCNT@nylon composite membrane

Phong,

Vuong,

Tai

et al. 2023

Mater. Res. Express

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The ion adsorption capacity has been added to the nylon 6 microfiltration (MF) membrane by grafting the fibers in its structure with carboxylated multi-walled carbon nanotubes (MWCNT-COOH). Through a direct three-step functionalization reaction with hexamethylenediamine (HMDA) and MWCNT-COOH, the multi-walled carbon nanotubes grafted nylon (MWCNT@nylon) fibers are made up of original nylon 6 and intermediate amino-enriched (nylon-NH2) membranes. Chemical structure analysis shows that HMDA and MWCNTs were grafted to the nylon 6 fiber side wall, without causing damage to either the nylon 6 backbone or the pore size of the original membrane. The SEM images confirm this and further confirm that the plexus of MWCNT-COOH has a pore size of approximately 50 nm, covering the nylon 6 fibers. The sidewall of nylon-NH2 and MWCNT@nylon fibers contains hydrophilic groups (amino and carboxylic), allowing the as-prepared membranes to reduce the wetting angle from about 70.3° to about 108.1°. This special structure opens new possibilities for polyamide membranes as well as mass production by the proposed simple method.

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Membranes of polyamide 6/clay/salt for water/oil separation

Cited by 11 publications

References 42 publications

Applications of Clays in Nanocomposites and Ceramics

Applications of Clays in Nanocomposites and Ceramics

Recent advances in membrane technologies applied in oil–water separation

Circulating-infiltrating preparation of hydrophilic nylon 6 membrane to hydrophobic MWCNT@nylon composite membrane

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