Current synthesis and characterization techniques for clay-based polymer nano-composites and its biomedical applications: A review

Das, Pratik; Manna, Suvendu; Behera, Ajaya Kumar; Shee, Moumita; Basak, Piyali; Sharma, Amit Kumar

doi:10.1016/j.envres.2022.113534

Cited by 41 publications

(23 citation statements)

References 102 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Meting processing allows for compatibility with several industrial methods (e.g., extrusion), facilitating possible scale-up. Moreover, melting processing enables the production of solid and durable joints between materials, ensuring the structural integrity of products when appropriately produced [ 56 ].…”

Section: Preparation Of Biodegradable Polymer/bentonite Nanocompositesmentioning

confidence: 99%

Thermal, Morphological and Mechanical Properties of Multifunctional Composites Based on Biodegradable Polymers/Bentonite Clay: A Review

Mapossa,

da Silva Júnior,

de Oliveira

et al. 2023

Polymers

View full text Add to dashboard Cite

The extensive use of non-biodegradable plastic products has resulted in significant environmental problems caused by their accumulation in landfills and their proliferation into water bodies. Biodegradable polymers offer a potential solution to mitigate these issues through the utilization of renewable resources which are abundantly available and biodegradable, making them environmentally friendly. However, biodegradable polymers face challenges such as relatively low mechanical strength and thermal resistance, relatively inferior gas barrier properties, low processability, and economic viability. To overcome these limitations, researchers are investigating the incorporation of nanofillers, specifically bentonite clay, into biodegradable polymeric matrices. Bentonite clay is an aluminum phyllosilicate with interesting properties such as a high cation exchange capacity, a large surface area, and environmental compatibility. However, achieving complete dispersion of nanoclays in polymeric matrices remains a challenge due to these materials’ hydrophilic and hydrophobic nature. Several methods are employed to prepare polymer–clay nanocomposites, including solution casting, melt extrusion, spraying, inkjet printing, and electrospinning. Biodegradable polymeric nanocomposites are versatile and promising in various industrial applications such as electromagnetic shielding, energy storage, electronics, and flexible electronics. Additionally, combining bentonite clay with other fillers such as graphene can significantly reduce production costs compared to the exclusive use of carbon nanotubes or metallic fillers in the matrix. This work reviews the development of bentonite clay-based composites with biodegradable polymers for multifunctional applications. The composition, structure, preparation methods, and characterization techniques of these nanocomposites are discussed, along with the challenges and future directions in this field.

show abstract

Section: Preparation Of Biodegradable Polymer/bentonite Nanocompositesmentioning

confidence: 99%

Thermal, Morphological and Mechanical Properties of Multifunctional Composites Based on Biodegradable Polymers/Bentonite Clay: A Review

Mapossa,

da Silva Júnior,

de Oliveira

et al. 2023

Polymers

View full text Add to dashboard Cite

show abstract

“…Clay nanoplatelets as the phyllosilicate minerals group have been investigated extensively for many applications due to their unique structure, thermal resistance, barrier properties, mechanical strength, and natural abundance. − Among various clays, montmorillonite (MMT) and vermiculite (VMT) have been widely reported to be environmentally benign alternatives, replacing halogen-based compounds in FR applications, thanks to their high char-forming character. , The hybrids of these clays with a high-aspect-ratio layered structure into a polymer matrix have been shown to be effective in reducing the heat release rate (HRR) during the combustion process. Various strategies have been developed to date in the preparation of clay-based polymer nanocomposites using simple mixing, melt intercalation, in situ polymerization, and template synthesis. − In order to fully realize the synergistic combination of clay sheets in the polymer nanocomposites, it is highly required for nanofillers to be uniformly deposited with a networked structure. However, difficulties in precise control of film architecture and the low compatibility of nanoplatelets in polymer matrix prevent the reinforcement of properties in clay-based nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

Synergistic Combination of Dual Clays in Multilayered Nanocomposites for Enhanced Flame Retardant Properties

Lee,

Kim,

Yun

et al. 2024

ACS Omega

View full text Add to dashboard Cite

In an effort to reduce the flammability of synthetic polymeric materials such as cotton fabrics and polyurethane foam (PUF), hybrid nanocoatings are prepared by layer-by-layer assembly. Multilayered nanocomposites of a cationic polyelectrolyte, poly(diallyldimethylammonium chloride) (PDDA), are paired with two kinds of clay nanoplatelets, montmorillonite (MMT) and vermiculite (VMT). The physical properties such as thickness and mass and thermal behaviors in clay-based nanocoatings with and without incorporation of tris buffer are compared to assess the effectiveness of amine salts on flame retardant (FR) performances. A PDDA-tris/VMT-MMT system, in which tris buffer is introduced into the cationic PDDA aqueous solution, produces a thicker and heavier coating. Three different systems, including PDDA/MMT, PDDA/VMT-MMT, and PDDA-tris/VMT-MMT, result in conformal coating, retaining the weave structure of the fabrics after being exposed to a vertical and horizontal flame test, while the uncoated sample is completely burned out. The synergistic effects of dual clay-based hybrid nanocoatings are greatly improved by adding amine salts. Cone calorimetry reveals that the PDDA-tris/VMT-MMT-coated PUF eliminates a second peak heat release rate and significantly reduces other FR performances, compared to those obtained from the clay-based multilayer films with no amine salts added. Ten bilayers of PDDAtris/VMT-MMT (≈250 nm thick) maintain the shape of foam after exposure to a butane torch flame for 12 s. As for practical use of these nanocomposites in real fire disasters, spray-assisted PDDA-tris/VMT-MMT multilayers on woods exhibit high resistance over flammability. Improved fire resistance in PDDA-tris/VMT-MMT is believed to be due to the enhanced char yield through the addition of tris buffer that promotes the deposition of more clay particles while retaining a highly ordered deposition of a densely packed nanobrick wall structure. This work demonstrates the ability to impart significant fire resistance to synthetic polymer materials in a fully renewable nanocoating that uses environmentally benign chemistry.

show abstract

“…In the existing literature, several review articles have explored polymer-clay nanocomposites focusing on specific aspects [ 30 , 31 ]. For instance, some reviews delve into specialized applications such as water treatment [ [32] , [33] , [34] , [35] , [36] , [37] , [38] ], biomedical uses [ 39 ], automotive and construction industries [ 40 , 41 ], and lithium-ion batteries [ 42 ]. Others narrow their scope to individual clay types, including montmorillonite (MMT) [ 43 , 44 ], halloysite [ [45] , [46] , [47] ], and sepiolite [ 48 ].…”

Section: Introductionmentioning

confidence: 99%

Clay-reinforced PVC composites and nanocomposites

Abdollahi Boraei,

Bakhshandeh,

Mohammadzadeh

et al. 2024

Heliyon

View full text Add to dashboard Cite

Current synthesis and characterization techniques for clay-based polymer nano-composites and its biomedical applications: A review

Cited by 41 publications

References 102 publications

Thermal, Morphological and Mechanical Properties of Multifunctional Composites Based on Biodegradable Polymers/Bentonite Clay: A Review

Thermal, Morphological and Mechanical Properties of Multifunctional Composites Based on Biodegradable Polymers/Bentonite Clay: A Review

Synergistic Combination of Dual Clays in Multilayered Nanocomposites for Enhanced Flame Retardant Properties

Clay-reinforced PVC composites and nanocomposites

Contact Info

Product

Resources

About