Effect of degree of silanization of luffa on the properties of luffa-epoxy composites

Dharmalingam, Sangeetha; Meenakshisundaram, Omkumar; Kugarajah, Vaidhegi

doi:10.1016/j.colsurfa.2020.125273

Cited by 14 publications

(17 citation statements)

References 35 publications

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“…Due to the simplicity of applications and the possibility to obtain good adhesion between ceramics and polymers, silanization has received much attention [14][15][16][17]. Silanization is a proven way to introduce silane coupling agents that can be used to improve the surface properties and introduce reactive functional groups on ceramic surfaces [18,19]. It is used to modify the surfaces of different fillers, e.g., carbon nanotubes and those of plant origin [18,19].…”

Section: Introductionmentioning

confidence: 99%

“…Silanization is a proven way to introduce silane coupling agents that can be used to improve the surface properties and introduce reactive functional groups on ceramic surfaces [18,19]. It is used to modify the surfaces of different fillers, e.g., carbon nanotubes and those of plant origin [18,19]. Silanization improves the dispersion and interfacial adhesion in the polymer matrix.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Calcination Temperature on the Phase Composition, Morphology, and Thermal Properties of ZrO2 and Al2O3 Modified with APTES (3-aminopropyltriethoxysilane)

et al. 2021

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This paper describes the effect of calcination temperature on the phase composition, chemical composition, and morphology of ZrO2 and Al2O3 powders modified with 3-aminopropyltriethoxysilane (APTES). Both ceramic powders were modified by etching in piranha solution, neutralization in ammonia water, reaction with APTES, ultrasonication, and finally calcination at 250, 350, or 450 °C. The obtained modified powders were characterized using X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, particle size distribution (PSD), scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM/EDS), and thermogravimetric analysis (TGA).

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Calcination Temperature on the Phase Composition, Morphology, and Thermal Properties of ZrO2 and Al2O3 Modified with APTES (3-aminopropyltriethoxysilane)

et al. 2021

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“…The ash was collected from the electrostatic precipitators. The physical density of the fly ash is 2.15 g/cm 3 . According to data provided from manufacturer the ash has category A (taking into account the loss on ignition).…”

Section: Characterization Of Filler and Its Modificationmentioning

confidence: 99%

“…The following methods are used in the literature: alkalization (change of surface topography with roughness) and silanization (introducing functional groups to fillers). After the silanization process, the silane molecule acts as a coupling agent to form a chemical bond between the solid modifier and the polymer matrix [3]. This modification method is successfully used in dental composites [4], bone cement formulations [5], esophageal stents [6].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Ash Silanization on the Selected Properties of Rigid Polyurethane Foam/Coal Fly Ash Composites

et al. 2022

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According to the assumptions of the European Union, by 2050 it is planned to achieve climate neutrality. For this purpose, a document called the “European Green Deal” was established, which is a set of policies of the European Commission. One of the assumptions is a circular economy that takes into account the use of waste in subsequent production cycles. In order to meet the latest trends in environmentally friendly materials and use of waste in the production of building materials, composites of rigid polyurethane foam with 10 wt.% of waste were produced. Fly ash from coal combustion after modification was used as a filler. Three types of modifications were used: silanization, sieving, and both processes together. The silanization process was carried out for 1 and 2% silane ([3-(2-aminoethylamino)propyl]trimethoxysilane) concentration in relation to the fly ash mass. The sieving was aimed at reaching a fraction with a particle diameter below 75 µm. Six composites with modified fillers were compared and one material containing unchanged fly ash was used as a reference. A comparative analysis was carried out on the basis of surface analysis, thermal stability and physical properties. It turned out that the polyurethane materials modified fly ash silanized with 1% and 2% silane solution proved the best results in performed tests. On the other hand, the polyurethane foam containing sieved ash was characterized by the lowest flammability and the lowest emission of smoke and CO. The use of modified fly ash in technology of polyurethane foams can be a good method of its disposal and can increase the applicability of the composites.

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“…However, its undoubted advantage is that the silanes not only react with the fibers, but also condense to form a thin protective coating that is able to give additional properties. Numerous studies have shown that the modification of natural fibers by silanization has a positive effect on improving the water resistance of the fibers, increasing the surface wettability of natural fibers by polymers and promoting interfacial adhesion, and additionally reduces flammability and improves their thermal stability [9,10]. As a result, the properties of natural-fiber-reinforced composites are improved, e.g., flammability or mechanical properties such as tensile strength, flexural modulus, percentage elongation and water absorption, etc.…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of Silanization and Plasma Treatment in the Improvement of Selected Flax Fibers’ Properties

2021

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The study investigated the effectiveness of the combination of chemical and physical methods of natural fibers’ modification. The long flax fibers were subjected to various types of modification. These were silanization, plasma modification and a combination of these methods. For the silanization process, two types of silanes were used: amino- and vinylsilane. The application of structurally different compounds allowed us to acquire knowledge about the effect of the modifier structure on its properties. Various properties of flax fibers were investigated, comparing the results before and after different modification processes. The flammability of prepared samples were tested by pyrolysis combustion flow calorimeter (PCFC). In the effect of the natural fibers’ modifications, flammability was reduced even by 30%. The thermal stability of modified fibers increased. The FTIR tests of the gases released during thermal degradation of the tested fibers allowed us to determine the important compounds and prove a lower degree of flax-fiber decomposition after modification. Flax fibers were also tested to evaluate their physical properties (linear mass, average diameter, aspect ratio and hygroscopicity). Changes in surface morphology were observed by scanning electron microscope (SEM). The properties of natural fibers improved significantly, thus contributing to an increase in their suitability for the use in composites.

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Effect of degree of silanization of luffa on the properties of luffa-epoxy composites

Cited by 14 publications

References 35 publications

Effect of Calcination Temperature on the Phase Composition, Morphology, and Thermal Properties of ZrO2 and Al2O3 Modified with APTES (3-aminopropyltriethoxysilane)

Effect of Calcination Temperature on the Phase Composition, Morphology, and Thermal Properties of ZrO2 and Al2O3 Modified with APTES (3-aminopropyltriethoxysilane)

The Effect of Ash Silanization on the Selected Properties of Rigid Polyurethane Foam/Coal Fly Ash Composites

Effectiveness of Silanization and Plasma Treatment in the Improvement of Selected Flax Fibers’ Properties

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