WebJun 7, 2024 · The FTIR spectral analysis of methanolic extract detected the presence of functional groups in six different frequency ranges (Table 4).The FTIR spectrum (Figure 2) showed six major peaks at 3384.84 cm −1, 2938.72 cm −1, 2039.40 cm −1, 1637.18 cm −1, 1084.85 cm −1, and 1029.61 cm −1.. Since aqueous methanol was used to extract the … WebFTIR spectrum was performed by a Nicolet FT-IR750 in the range of 4000–400 cm˚1. OIT was measured with ... phenolic antioxidants, the OIT values of pure HDPE and HDPE in combination with antioxidants were measured, as shown in Figure 4. The OIT value of pure HDPE is 54.12 min, during hindered phenolic antioxidants are introduced, and ...
Curing mechanism of resole phenolic resin based on variable …
WebFor example, the most characteristic absorption band in the spectrum of 2-hexanone (Figure 6.3a) is that from the stretching vibration of carbonyl double bond C=O at 1716 cm-1. It is a very strong band comparing to the others on the spectrum. A strong absorbance band in the 1650–1750 cm-1 region indicates that a carbonyl group (C=O) is present. WebApr 11, 2024 · The detected FTIR spectra in our work showed peaks characteristic for C–H for methyl groups, C=O group of lactone and C–O. Robaina et al reported that FTIR can be used to detect azithromycin and that the characteristic is the peak for C=O group of lactone and that it can also be used for quantitative analysis. mia farrow style dresses
Crosslinking of Epoxy-Modified Phenol Novolac (EPN) Powder …
Webthe complete FTIR spectra indicates that different grass genotypes can be readily distinguished by these techniques. Data on the spectral “signatures” from detailed FTIR analyses of known cell wall biochemical mutants will be compared to newly characterised plants along with the available genetic characterisation data. Conclusions WebCompound Phenolwith free spectra: 140 NMR, 21 FTIR, 3 Raman, and 32 MS. WebFTIR spectra of phenolic resin and phenolic resin composite system after the cone calorimeter test. ... View in full-text Similar publications +4 Thermoset Polymer Matrix … how to cape a buck for shoulder mount