Use of analytical techniques for identification of inorganic polymer gel composition

Zaharaki, Dimitra; Komnitsas, Kostas; Perdikatsis, V.

doi:10.1007/s10853-010-4257-2

Cited by 144 publications

(73 citation statements)

References 36 publications

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“…The strong peak at ~1000 cm 1 is associated with Al-O and Si-O asymmetric stretching vibrations and is the fingerprint of the geopolymerisation [31]. The FTIR spectra show a broad peak in the region at 3466 cm 1 corresponding to the hydroxyl (OH) stretching vibration of free and hydrogen bonded -OH groups [32,33], and the absorbance peak around 1653 cm 1 is attributed to the bending vibration of absorbed water [34,35]. The presence of bands in the regions 1440-1490 cm 1 is an indicator of the atmospheric carbonation on the surface of the matrix where it reacts with carbon dioxide [34].…”

Section: Ftir Observationmentioning

confidence: 99%

“…The FTIR spectra show a broad peak in the region at 3466 cm 1 corresponding to the hydroxyl (OH) stretching vibration of free and hydrogen bonded -OH groups [32,33], and the absorbance peak around 1653 cm 1 is attributed to the bending vibration of absorbed water [34,35]. The presence of bands in the regions 1440-1490 cm 1 is an indicator of the atmospheric carbonation on the surface of the matrix where it reacts with carbon dioxide [34]. The presence of flax fibres in the composites can be recognised by the peak at 1418 cm 1 , which is attributed to the CH 3 bending vibration of cellulose [32].…”

Section: Ftir Observationmentioning

confidence: 99%

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Characterisation of mechanical and thermal properties in flax fabric reinforced geopolymer composites

et al. 2015

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This paper presents the mechanical and thermal properties of flax fabric reinforced fly ash based geopolymer composites. Geopolymer composites reinforced with 2.4, 3.0 and 4.1 wt% woven flax fabric in various layers were fabricated using a hand lay-up technique and tested for mechanical properties such as flexural strength, flexural modulus, compressive strength, hardness, and fracture toughness. All mechanical properties were improved by increasing the flax fibre contents, and showed superior mechanical properties over a pure geopolymer matrix. Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) studies were carried out to evaluate the composition and fracture surfaces of geopolymer and geopolymer/flax composites. The thermal behaviour of composites was studied by thermogravimetric analysis (TGA) and the results showed significant degradation of flax fibres at 300 ℃.

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Section: Ftir Observationmentioning

confidence: 99%

Section: Ftir Observationmentioning

confidence: 99%

Characterisation of mechanical and thermal properties in flax fabric reinforced geopolymer composites

et al. 2015

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“…The signals in the wavenumber range [47], [48]. Figure 5 shows micrographs of freshly obtained fracture surfaces of geopolymer, GEO-Mel20 and GEO-MelAptes20.…”

Section: Ft-ir Analysismentioning

confidence: 99%

Fire resistant melamine based organic-geopolymer hybrid composites

Roviello

Ricciotti

Ferone

et al. 2015

Cement and Concrete Composites

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“…The bands seen at 3593 cm -1 is attributed to stretching vibration of -OH and 1644 cm -1 is bending vibrations of H-O-H [14]. Atmospheric carbonation is evident at 1460 cm -1 [14].…”

Section: Resultsmentioning

confidence: 97%

The Effect of Curing Conditions on the Properties of Geopolymer Samples

Arioz¹,

Arıöz²,

Koçkar³

2013

IJCEA

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Abstract-Geopolymers or inorganic polymers are getting increasing attention due to being environmentally friendly and having great potential for applications in various industries. Geopolymers have three dimensional amorphous structure and can be synthesized from by products such as fly ash, blast furnace slag or geological materials such as kaolinite.In this experimental study F class fly ash was used as a raw material and geopolymer samples were synthesized by means of sodium silicate and 8 M sodium hydroxide solutions. These samples were cured at 80°C for three different durations (6h, 15h and 24h). Compressive strength tests were carried out at 7 and 28 days. The maximum compressive strength was found to be 40.35 MPa. The compressive strength values indicated that the curing conditions influenced the physical properties of geopolymer samples. As the curing duration increased, the compressive strengths increased.XRD and FTIR techniques were used to characterize the fly-ash based geopolymers. In FTIR spectra it has seen that geopolymerisation has been achieved successfully. The major fingerprint for the geopolymer has obtained. It was also observed that there was no significant effect of curing conditions on the microstructure of the samples. FTIR and XRD spectrums were nearly the same with increasing duration.

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Use of analytical techniques for identification of inorganic polymer gel composition

Cited by 144 publications

References 36 publications

Characterisation of mechanical and thermal properties in flax fabric reinforced geopolymer composites

Characterisation of mechanical and thermal properties in flax fabric reinforced geopolymer composites

Fire resistant melamine based organic-geopolymer hybrid composites

The Effect of Curing Conditions on the Properties of Geopolymer Samples

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