Preparation and characterization of sepiolite‐poly(ethyl methacrylate) and poly(2‐hydroxyethyl methacrylate) nanocomposites

Benlikaya, Ruhan; Alkan, Mahir; Kaya, İsmet

doi:10.1002/pc.20731

Cited by 62 publications

(53 citation statements)

References 41 publications

(25 reference statements)

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“…This feature probably indicates that organophilisation occurs mainly through a surface modification or by partial replacement of zeolitic water, maintaining its crystalline structure. [34,37] …”

Section: X-ray Diffraction Analysesmentioning

confidence: 99%

Effect of reaction conditions on silanisation of sepiolite nanoparticles

Jalali

Taromi

Atai

et al. 2016

Journal of Experimental Nanoscience

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The study provides insights into the silanisation process of sepiolite nanoparticles. The nanoparticles were modified applying acidic and basic silanisation methods using Methacryloxypropyltrimethoxysilane (g-MPS) as coupling agent. The silanisation reaction was performed in the following conditions: (1) acidic ethanolÀwater solution with a pH of 5 and (2) basic cyclohexane with a pH of 9. The influence of the conditions on the surface chemistry of modified particles was then investigated. To characterise the surface of sepiolite nanoparticles, analytical methods such as Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis, X-Ray diffraction (XRD), scanning electron microscopy (SEM), and zeta potential analyses were applied. In addition, the colloidal stability of the modified nanoparticles was studied using a separation analysis. According to XRD and SEM, the basal interlayer distance of pristine sepiolite is not altered by silanisation process. TGA reveals that the grafting percentage of organosilane synthesised by basic method is approximately two times of that of acidic method. The silane coverage on the surface of the sepiolite and the per cent of hydroxyl groups covalently bound to g-MPS were calculated. Separation analysis indicates decline in dispersion stability of the modified nanoparticles in ethanol due to increment of their hydrophobicity.

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Section: X-ray Diffraction Analysesmentioning

confidence: 99%

Effect of reaction conditions on silanisation of sepiolite nanoparticles

Jalali

Taromi

Atai

et al. 2016

Journal of Experimental Nanoscience

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“…To avoid the complications, a silane coupling agent is needed to improve silica-rubber interaction and silica dispersion as well as to prevent accelerator adsorption on the silica surface [5][6][7][8][9]. Sepiolite is a hydrated magnesium silicate clay (Mg2H2SiO3O9.xH2O), Sepiolite has a similar structure to the layered structure of montmorillonite except that the layers lack continuous octahedral sheet [10][11]. The acicular morphology of sepiolite generally improves adhesion/compatibility with polymeric matrices and provides an excellent reinforcing effect on polymer [12] and sepiolite improved the endothermic nature of decomposition reaction.…”

Section: Introductionmentioning

confidence: 99%

A comparison between the effects of sepiolite and silica on mechanical properties and thermal stability of NR/EPDM blend

Winya

Hansupalak

2016

MATEC Web Conf.

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Abstract. This study focused on improving the ablation properties and mechanical properties of natural rubber (NR)/ethylene propylene diene monomer (EPDM) blends by using two different commercial fillers: sepiolite and silica. The results showed that sepiolite and silica similarly improved both properties in the loading range of interest (0-12.5 phr). However, sepiolite was superior than silica as using less loading to acheive comparable mechanical and thermal properties. The optimum loading of sepiolite was 5 phr, while that of silica was 10 phr. For both filler systems, the minimum ablation rate found was approximately 0.17 mm/s, and the tensile strength and the hardness of corresponding NR/EPDM composite were improved after modification with sepiolite or silica.Thus, the composite reinforced with sepiolite or silica is suitable for many applications, such as internal insulations of rocket motor.

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“…At second stage, PLA/fsi/clay (1.28E) nanocomposite showed higher weight percent loss (12.05%) compared to PLA/fsi/clay (1.30E) nanocomposites. The improved thermal stability of PLA/fsi/clay (1.28E) nanocomposite was attributed to the clay acting as crosslinking agent that retarded the motion of polymer chain [26].…”

Section: Thermogravimetric Analysis (Tga)mentioning

confidence: 99%

Physical, Mechanical, Thermal and Morphology Properties of Biodegradable Polymer Nanocomposites and Its Comparison

2016

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Abstract. Polyvinyl alcohol (PVA) and Polylactic acid (PLA) were fabricated with the addition of nanofiller such as nanoclay and fumed silica through suitable technique namely solution intercalation film casting. These nanocomposites undergo Fourier transform infrared spectroscopy, scanning electron microscopy, tensile test and thermogravimetric analysis. FT-IR results showed that both nanocomposites were well intercalated with fumed silica and clay with the reduction of hydroxyl groups. From SEM results, it proved that clay 1.28E is more suitable to be intercalated with PLA matrix while clay 1.30E is more suitable to be introduced into PVA matrix. The addition of both nanofillers improved the tensile properties of the nanocomposites. TGA results showed that polyvinyl alcohol/fumed silica/clay (PVA/fsi/clay) had better thermal stability compared to polylactic acid/fumed silica/clay (PLA/fsi/clay) nanocomposites. Both nanocomposites are applicable in the biomedical field.

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Preparation and characterization of sepiolite‐poly(ethyl methacrylate) and poly(2‐hydroxyethyl methacrylate) nanocomposites

Cited by 62 publications

References 41 publications

Effect of reaction conditions on silanisation of sepiolite nanoparticles

Effect of reaction conditions on silanisation of sepiolite nanoparticles

A comparison between the effects of sepiolite and silica on mechanical properties and thermal stability of NR/EPDM blend

Physical, Mechanical, Thermal and Morphology Properties of Biodegradable Polymer Nanocomposites and Its Comparison

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