Modification of poly(benzimidazole‐amide) nanocomposites by the incorporation of amine‐functionalized ZnO nanoparticles: Thermal and morphological characterization

Toiserkani, Hojjat

doi:10.1002/pat.4291

Cited by 9 publications

(3 citation statements)

References 34 publications

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“…The percentage of modification (M) and grafting efficiency (GE) of MPS on nano‐alumina surface was gravimetrically determined (Figure 6) by the following equations (1 and 2): [ 34–38 ]

M (%) goodbreak= (Weight loss of {Al}_{2} O_{3} normalNPs) - (Weight loss of normalf goodbreak- {Al}_{2} O_{3} normalNPs)

GE (%) = (W_{MPS grafted} ∕ {normalW}_{MPS introduced}) \times 100

where

W_{MPS grafted} = M \times [W_{nano - alumina used} ∕ (100 - M)]

.…”

Section: Resultsmentioning

confidence: 99%

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Preparation and investigation of properties of deproteinized natural rubber nanocomposites incorporating functionalized nano‐alumina by in situ emulsion polymerization

Sadeghi

Toiserkani

2023

Vinyl Additive Technology

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The present study reports the preparation, characterization, and investigation of properties of DNR/f-Al 2 O 3 nanocomposites through an in situ emulsion polymerization technique. The method consists of the dispersion of pretreated nanoalumina (f-Al 2 O 3 NPs) onto deproteinized natural rubber (DNR) latex, followed by the polymerization reaction with the K 2 S 2 O 8 /K 2 S 2 O 5 redox initiation system, after deproteinization of natural rubber using urea in the presence of a surfactant.

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“…The percentage of modification (M) and grafting efficiency (GE) of MPS on nano‐alumina surface was gravimetrically determined (Figure 6) by the following equations (1 and 2): [ 34–38 ]

M (%) goodbreak= (Weight loss of {Al}_{2} O_{3} normalNPs) - (Weight loss of normalf goodbreak- {Al}_{2} O_{3} normalNPs)

GE (%) = (W_{MPS grafted} ∕ {normalW}_{MPS introduced}) \times 100

where

W_{MPS grafted} = M \times [W_{nano - alumina used} ∕ (100 - M)]

.…”

Section: Resultsmentioning

confidence: 99%

“…The percentage of modification (M) and grafting efficiency (GE) of MPS on nano-alumina surface was gravimetrically determined (Figure 6) by the following equations (1 and 2): [34][35][36][37][38]…”

Section: Resultsmentioning

confidence: 99%

Preparation and investigation of properties of deproteinized natural rubber nanocomposites incorporating functionalized nano‐alumina by in situ emulsion polymerization

Sadeghi

Toiserkani

2023

Vinyl Additive Technology

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“…Functional silanes are widely employed for surface modification of metal oxides, addressing the high tendency of nanoparticles to adhere and aggregate. [44][45][46][47][48][49][50] Utilizing a reactive silane coupling agent (MTS), ZrO 2 NPs undergo functionalization, resulting in the formation of SH-ZrO 2 NPs through hydrolysis and condensation reactions. This functionalization process effectively reduces filler-filler interactions, leading to improved dispersion.…”

Section: Resultsmentioning

confidence: 99%

Fabrication and characterization of epoxidized natural rubber nanocomposites reinforced with mercapto‐functionalized nanozirconia filler

Toiserkani

2023

Polymer Composites

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The objective of this study was to develop a new type of nanocomposite material by reinforcing epoxidized natural rubber (ENR) through the integration of mercapto‐functionalized nanozirconia (SH‐ZrO2 NPs) synthesized using a ring‐opening reaction. The ENR was prepared through the epoxidation of natural rubber (NR) using in situ generated performic acid from formic acid and hydrogen peroxide. The SH‐ZrO2 NPs were pretreated and systematically embedded into the ENR matrix via a latex‐casting process, resulting in ENR/SH‐ZrO2 nanocomposites with enhanced properties. To prevent the accumulation of nanofillers in the ENR matrix, the surface of the nanozirconia was treated with 3‐(mercaptopropyl)trimethoxysilane (MTS) to create mercapto‐terminated ZrO2 NPs (SH‐ZrO2 NPs) that were covalently attached to the ENR chains. The presence of MTS on the surface of the nanozirconia was confirmed by FTIR and thermogravimetric analysis (TGA) analyses. Structural and morphological characterization of the resulting nanocomposites was performed using standard techniques such as x‐ray diffraction (XRD), scanning electron microscopy (SEM), and TGA. The morphological studies indicated a uniform distribution of SH‐ZrO2 NPs throughout the ENR matrix. Furthermore, TGA analysis revealed that the thermal stability of the nanocomposites was improved, as evidenced by a shift in the decomposition temperature to a higher value compared to neat ENR. Overall, this work demonstrates the potential of SH‐ZrO2 NPs as an effective reinforcing agent in ENR‐based nanocomposites, with improved thermal stability and homogeneity.Highlights Enhanced nanocomposite properties: Integration of mercapto‐functionalized nanozirconia improves the performance of epoxidized natural rubber (ENR) materials. Innovative synthesis approach: SH‐ZrO2 NPs synthesized via ring‐opening reaction offer a novel method for reinforcing ENR matrices. Improved thermal stability: ENR/SH‐ZrO2 nanocomposites exhibit higher decomposition temperatures, indicating enhanced thermal stability. Uniform dispersion: Morphological studies confirm the uniform distribution of SH‐ZrO2 NPs throughout the ENR matrix. Promising reinforcing agent: SH‐ZrO2 NPs demonstrate their potential as an effective filler for ENR‐based nanocomposites, enhancing homogeneity and performance.

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Acrylated epoxidized natural rubber/functionalized organoclay hybrid networks: In‐situ production and characterization study

Toiserkani,

Rajab‐Qurchi

2024

Polymer Composites

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This study is dedicated to the fabrication of acrylated epoxidized natural rubber (AENR)/dual‐functionalized organoclay (DF‐C30B) hybrid networks using an in‐situ light‐induced crosslinking polymerization technique. The process begins with the successful synthesis of DF‐C30B, which contains methacrylate groups, achieved by reacting 3‐methacryloxypropyltrimethoxysilane (MPS) with cloisite 30B (C30B). During fabrication, DF‐C30B nanolayers are dispersed within the AENR matrix at various feed ratios, ranging from 1 to 8 parts per hundred of rubber (phr). The photocrosslinking polymerization is then initiated using 2,2‐dimethoxy‐2‐phenylacetophenone (DMPA) as the photoinitiating agent. Subsequent analysis of the nanocomposites involves evaluating their structure and morphology using established techniques such as Fourier transform infrared (FTIR) spectroscopy, x‐ray diffraction (XRD), thermogravimetric analysis (TGA), and transmission electron microscopy (TEM). The FTIR analysis enables comparing distinct bands of the nanocomposite's components, affirming the integration and covalent attachment of nanoclay in the AENR matrix. Results from TEM and XRD illustrate the uniform distribution of DF‐C30B throughout the AENR matrix without significant agglomeration. TGA results indicate that the hybrid networks exhibit enhanced thermal stability, with degradation onset temperatures of 306°C, 308°C, 315°C, and 318°C for DF‐C30B loadings of 1, 2, 4, and 8 phr, respectively, compared to 198°C for pure AENR. Correspondingly, char residue levels increased to 4.3%, 5.6%, 7.8%, and 11.7% for the respective DF‐C30B contents. This research underscores the promising role of DF‐C30B as a strengthening component in nanocomposites based on NR, contributing to improved thermal endurance, enhanced uniformity, and offering insightful directions for future advancements.Highlights Fabricated acrylated epoxidized natural rubber (AENR)/dual‐functionalized organoclay (DF‐C30B) hybrid networks via light‐induced crosslinking polymerization. Enhanced compatibility and performance of DF‐C30B within the AENR matrix. Successful integration and stability confirmed by Fourier transform infrared spectroscopy, x‐ray diffraction (XRD), transmission electron microscopy (TEM), and thermogravimetric analysis (TGA). Uniform dispersion of DF‐C30B within the matrix demonstrated by XRD and TEM. Improved thermal stability compared to neat AENR, as evidenced by TGA results.

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Modification of poly(benzimidazole‐amide) nanocomposites by the incorporation of amine‐functionalized ZnO nanoparticles: Thermal and morphological characterization

Cited by 9 publications

References 34 publications

Preparation and investigation of properties of deproteinized natural rubber nanocomposites incorporating functionalized nano‐alumina by in situ emulsion polymerization

Preparation and investigation of properties of deproteinized natural rubber nanocomposites incorporating functionalized nano‐alumina by in situ emulsion polymerization

Fabrication and characterization of epoxidized natural rubber nanocomposites reinforced with mercapto‐functionalized nanozirconia filler

Acrylated epoxidized natural rubber/functionalized organoclay hybrid networks: In‐situ production and characterization study

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