Water-based polyamide imide – nanoclay coating: Preparation, characterization, thermal stability and visible transparency

Naderi-Samani, Hamed; Loghman-Estarki, Mohammad Reza; Razavi, Reza Shoja; Ramazani, Mazaher; Jalili, Iraj

doi:10.1016/j.porgcoat.2016.09.016

Cited by 10 publications

(3 citation statements)

References 39 publications

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“…The cast films obtained from 4 g emulsion of several thickness exhibit optical transparencies with no evidence of macroaggregates, as shown in Fig. ; suggesting good clay dispersion in the polymer matrix, similar finding has been reported by H. Naderi‐Samani et al and D. Murima et al .…”

Section: Resultssupporting

confidence: 87%

“…Dongyan Wang et al polymerized PMMA‐modified MMT, and report an intercalated system, which increase their thermal stability and mechanical properties, using 0.60 g of organic clay. Also it has been reported a water‐based polyamide‐imide (PAI)/clay nanocomposites prepared using the solution intercalation technique, revealing that 1 wt% C20A was exfoliated and intercalated at 3 wt%, and with 5 wt% was flocculated, increasing their thermal stability. Sanit Sirapanichart et al report an increase of thermal stability, tensile strength and Young's modulus of poly(methyl methacrylate‐co‐butylacrylate)/organophosphate‐modified MMT composite films; without changes in their ductility properties and retaining their high transparency.…”

Section: Introductionmentioning

confidence: 99%

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Effect on thermo‐mechanical properties by in‐situ emulsion polymerization of polymer/clay nanocomposites

et al. 2017

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Bentonite clay nanoparticles without surface modification were used to prepare a polymer-based nanocomposite: Butyl acrylate (BA), methyl methacrylate (MMA), and acrylic acid (AA) were copolymerized as the matrix. The synthesis was carried out using seeded batch emulsion polymerization system. Bentonite was added up to 3 wt% and the metastable emulsions remained for a period over 6 months in storage at room temperature, to estimate the emulsion stability. Cast films were obtained from the aqueous dispersions and these were optically transparent. Scanning electron microscopy and X-ray scattering spectra showed that the copolymer chain had intercalated the Bentonite nanoplatelets, with aggregates into small crystalline clusters and dispersed through the polymer matrix. Differential scanning calorimetry showed that increasing the concentration of Bentonite increased the glass transition temperature, T g . Furthermore, uniaxial tensile deformation at room temperature showed that the elastic Youngs modulus, E, increased over an order of magnitude at 3 wt% Bentonite concentration. These results suggest that the molecular dynamics is inhibited, due to the associated restricted motions of the confined macromolecules within the gallery clay and the increment of the molecular weight. POLYM. COMPOS., 00:000-000, 2017. V C 2017 Society of Plastics Engineers FIG. 2. Solids analysis obtained as a function of polymerization time for (i) copolymer and the nanocomposites containing (a) 1 wt%, (b) 2 wt%, and (c) 3 wt% bentonite. Lines are only intended as guide to the eye. FIG. 3. Degree of conversion and coagulum amount of polymer/clay emulsions as a function of bentonite concentration. Lines are only intended as guide to the eye. FIG. 7. Photographs of copolymer/bentonite nanocomposites, about 1.0, 0.4, 0.2, and 0.5 mm in thickness, casted from their respective emulsions. The concentrations of bentonite are (a) 0 wt%, (b) 1 wt%, (c) 2 wt%, and (d) 3 wt%. FIG. 12. (a) TGA and (b) DTG curves for (i) copolymer and nanocomposites containing (ii) 1 wt%, (iii) 2 wt%, and (iv) 3 wt% of bentonite.

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Section: Resultssupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Effect on thermo‐mechanical properties by in‐situ emulsion polymerization of polymer/clay nanocomposites

et al. 2017

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“…Starting with the latter category, performance improvements depend on the distribution and arrangement of the nanoclay in the polymer matrix. The effective exfoliation of nanoclays maximizes the hydrogen bonding between the layered nanoclay and PI chains resulting in better mechanical and thermal properties [16][17][18]. The thermal conductivity of PI which is in the order of 0.1 W m −1 K −1 cannot meet the requirement of fast heat conduction for advanced electronic devices.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional, flexible, and mechanically robust polyimide-MXene nanocomposites: a review

Altan,

Namvari

2023

2D Mater.

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Multifunctional flexible polymer composites have proliferated in different industries. MXenes, as the rising star of 2D materials, offer unique combinations of properties including metallic conductivity, hydrophilicity, high specific capacitance, and solution processability, as well as mechanical flexibility and robustness that accentuate them for the fabrication of multifunctional composites. 2D flake structure and abundant surface terminations of MXene facilitate its integration into polymer matrices to develop high-performance composites. Polyimides (PI) are high-temperature engineering polymers that have rendered their way into aerospace and electronics industries due to their outstanding mechanical strength, high chemical resistance, high thermal stability, excellent electrical and thermal insulation properties. Amalgamating the outstanding characteristics of these two materials, this paper is the first review to summarize advancements in PI/MXene nanocomposites to address the methods of preparation and the effect of MXene loading on the target application e.g., energy conversion and storage, electromagnetic interference shielding, sending, and fire-retardancy. Commencing with a brief introduction on PI and MXene synthetic methods, the nanocomposite fabrication methods are critically discussed. Next, a comprehensive review of the properties and applications of PI/MXene nanocomposites is provided. Lastly, based on the current developments of PI/MXene nanocomposites, this paper is concluded with the prominent characteristics of PI/MXene composites regarding the target application and identifying the gaps and challenges to develop multifunctional composites.

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Two different routes to prepare porous biodegradable composite membranes containing nanoclay

Zanini,

Ferreira,

Barbosa

et al. 2023

J of Applied Polymer Sci

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The method employed for membrane preparation and nanoparticle incorporation in membrane systems can affect their properties. This work aims to compare the better strategy to obtain membranes from the preparation of PBAT [Poly(butylene adipate co‐terephthalate)] containing nanoclay Cloisite® 20A (C20A) (0, 0.5, and 1 wt.%) by combined Evaporation/Non‐solvent Induced Phase Separation (EIPS/NIPS) or dip coating methods. The SEM, TGA, contact angle measurements, FTIR, XRD, mechanical testing, and cost analysis characterized EIPS/NIPS to dip coating membranes. EIPS/NIPS membranes had smaller pores (0.3–0.5 μm), with a more homogeneous pore diameter distribution due to C20A nanoclay insertion. PBAT/0.5% C20AEIPS/NIPS was the more hydrophilic membrane (37°) with better mechanical properties proven by statistical analysis. The cost analysis showed that EIPS/NIPS membranes production cost per square meter (m2) was lower (US$ 73.4–73.8) than dip coating (US$ 89.0–99.2). The EIPS/NIPS method was the most economically and statistically advantageous, and its properties can favor future applications for PTEs removal in aqueous media.

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Water-based polyamide imide – nanoclay coating: Preparation, characterization, thermal stability and visible transparency

Cited by 10 publications

References 39 publications

Effect on thermo‐mechanical properties by in‐situ emulsion polymerization of polymer/clay nanocomposites

Effect on thermo‐mechanical properties by in‐situ emulsion polymerization of polymer/clay nanocomposites

Multifunctional, flexible, and mechanically robust polyimide-MXene nanocomposites: a review

Two different routes to prepare porous biodegradable composite membranes containing nanoclay

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