Improvement of the viscoelastic and thermal properties of polyvinyl acetate reinforced with organophilic clay (Algerian MMT)

Cherifi, Badia Imene; Belbachir, Mohammed; Rahmouni, Abdelkader; Dérail, Christophe; Hannaoui, Feriel; Zeggai, Fatima Zohra; Chebout, Redouane; Bachari, K.

doi:10.1016/j.molstruc.2021.132100

Cited by 8 publications

(4 citation statements)

References 32 publications

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“…The fairly low heat conductivity of those nanoparticles and the interlayer spacing among them allow the LHL multiple nanoscale minerals to effectively insulate the heat transmission . Besides, the additional phase separation caused by LHL multiple nanoscale minerals led to large pores in the network of PVA/LHL, which delayed the thermal transmission across the PVA crystalline domains (Figure C,D) . This protective effect against heat made it promising for the PVA/LHL nanocomposite hydrogel to serve as a heatproof device.…”

Section: Resultsmentioning

confidence: 99%

“…41 Besides, the additional phase separation caused by LHL multiple nanoscale minerals led to large pores in the network of PVA/LHL, which delayed the thermal transmission across the PVA crystalline domains (Figure 1C,D). 42 This protective effect against heat made it promising for the PVA/ LHL nanocomposite hydrogel to serve as a heatproof device.…”

Section: Thermal Insulatingmentioning

confidence: 99%

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Poly(vinyl alcohol)/Laponite/Layered Double Hydroxide/Hydroxyapatite Nanocomposite Hydrogels for Stimulus-Responsive Devices

Wang,

2024

ACS Appl. Nano Mater.

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Nanocomposite hydrogels are supposed to combine the advantages of both a polymer matrix and filler. Without the use of organic additives, the incorporation of high-content inorganic nanofillers along with elevated properties remains a challenge. Accordingly, facilitated by the stepwise salting-out method, we proposed the PVA nanocomposite hydrogels containing multiple nanoscale minerals. Three kinds of nanominerals could reach certain electrostatic equilibrium, which helped to maintain their well-dispersed state even in the PVA matrix with high salinity. Unlike the traditional PVA nanocomposite hydrogels, whose mechanical properties tended to decrease upon the incorporation of inorganic fillers, the incorporation of multiple nanoscale minerals enhanced the mechanical properties including tensile strength and elongation at break. Besides, the unique multiple nanoscale mineral structure endowed our proposed nanocomposite hydrogels with high versatility, which could act as thermal insulators, flame-retardant matter, and respiration detectors. Instead of organic modification, this work innovatively utilizes intrinsic inorganic-to-inorganic interactions for achieving a fine nanocomposite microstructure in a polymer matrix. Our proposed nanocomposite hydrogels address potential applications for stimulus-responsive devices.

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Section: Resultsmentioning

confidence: 99%

Section: Thermal Insulatingmentioning

confidence: 99%

Poly(vinyl alcohol)/Laponite/Layered Double Hydroxide/Hydroxyapatite Nanocomposite Hydrogels for Stimulus-Responsive Devices

Wang,

2024

ACS Appl. Nano Mater.

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“…Polymeric materials' thermal stability is typically investigated using thermogravimetric analysis (TGA). Adding inorganic nanofillers to biodegradable polymers has been shown to increase their thermal stability [70,71]. Modifying clay has also involved the use of a number of organic compounds.…”

Section: Thermal Stability Of Biopolymer/clay Nanocompositesmentioning

confidence: 99%

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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“…Polyvinyl acetate and polyvinyl chloride are two types of polymer adhesives used in various industries, including the formulation of conductive pastes. Polyvinyl acetate is a versatile polymer adhesive that is widely used in various applications, including adhesives, coatings, and emulsions due to its excellent adhesive properties, good bonding strength, and flexibility [24][25][26]. Polyvinyl chloride is a thermoplastic polymer that is widely used in various industries due to its excellent chemical resistance, good adhesion to substrates, mechanical stability, and moisture resistance, making it suitable for outdoor or harsh environment applications [27].…”

Section: Introductionmentioning

confidence: 99%

Electrical and water resistance properties of conductive paste based on gold/silver composites

WONGRERKDEE,

CHOOPUN,

PIMPANG

2023

J Met Mater Miner

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This study aimed to investigate the effects of a corrosive environment on both the electrical and the water resistance properties of conductive paste based on gold/silver composites. The conductive paste was prepared by incorporating silver and gold powders, polyvinyl acetate, polyvinyl chloride as adhesive components, and methyl isobutyl ketone as a diluent. The gold/silver composite powder was prepared with different mass ratios of gold and silver. The paste was coated on a substrate and heated at 80℃ to form the conductive paste film. Characterizations of conductive paste were performed by using FT-IR spectroscopy, electrometry, cyclic voltammetry, and contact angle measurements. Thus, the conductive paste films were tested under two conditions: the absence and the presence of exposure to nitric acid vapor. The results showed that the resistance and the contact angle of the conductive paste were more stable after exposure to nitric acid vapor, particularly in samples of higher gold content. Furthermore, the electrochemical behavior of the conductive paste with gold content remains unchanged after exposure to nitric acid vapor. Results suggest that gold has properties in terms of stability, resistance to oxidation, and maintaining surface characteristics, making it a preferable component for applications requiring resistance to corrosive environments.

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Improvement of the viscoelastic and thermal properties of polyvinyl acetate reinforced with organophilic clay (Algerian MMT)

Cited by 8 publications

References 32 publications

Poly(vinyl alcohol)/Laponite/Layered Double Hydroxide/Hydroxyapatite Nanocomposite Hydrogels for Stimulus-Responsive Devices

Poly(vinyl alcohol)/Laponite/Layered Double Hydroxide/Hydroxyapatite Nanocomposite Hydrogels for Stimulus-Responsive Devices

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

Electrical and water resistance properties of conductive paste based on gold/silver composites

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