Fourier transform infrared spectroscopy (FTIR). The presence of functional groups in standard chitosan and synthesised NPs (CS and CSP) were analysed to ensure purity. Full size image Viability of synthesised CSP NPs CSP NPs bacterial load viability was determined using the pour plate method as ill...
Full size image Generally, separating the used adsorbent from the treated sample is a typical task. Due to the difficulty in the separation of nanoparticles, several support materials are used to enhance adsorption efficiency. Another reason to use supporting materials is that they prevent the agglom...
During the analysis of the FTIR spectrum of PCPC (1:2), which has a pectin-to-chitosan ratio of 1:2, it was compared to the spectra of unadulterated PVA, pectin, and chitosan. The comparison demonstrated that all materials contained existing bonds; however, no new bonds were generated, su...
The impregnation of MEA on zeolite - chitosan beads was verified by FTIR for specific functional groups. In addition, the influence of different preparation methods, temperatures and humid conditions on adsorption capacity was also considered for different MEA-loaded samples. The beads with 10 % w....
The FTIR spectrum of glycerol is given in Fig. 3b. The broad peak at 3275 cm−1 is due to the –OH groups and the one at 2880-2933 cm−1 is that of the –CH group. The strong peak at around 1415 cm−1 could be attributed to the bending of the C–O–H of ...
Figure 2 a of sheet 1 shows the diagram for FTIR spectra, Figure 2 b of sheet 2 shows the diagram of FTIR Spectra, Figure 3 of sheet 2 shows the diagram for 1H NMR spectra, Figure 4 a of sheet 3 shows the diagram of DSC thermograms, Figure 4b of sheet 3 shows the diagram of ...
“Roberts”). This FTIR method provides an accuracy of DDA determination of near ±3% DDA. Although the FTIR method was used predominantly in this invention, alternate techniques to determine DDA were used to corroborate FTIR analyses. The other techniques used were1H NMR (ASTM F2260-03) and ...
Fig. 2. A) FTIR spectra and B) H1NMR spectra of lithocholic acid (LA), chitosan (CS), thiolated chitosan (TCS) and thiolated chitosan-lithocholic acid conjugate (TCS-LA). The FTIR spectrum of β-carotene is also included for comparison. The spectrum of TCS showed characteristic peaks at...
(cm−1) of peaks in the absorption spectrum to the vibration frequency of individual molecular parts. The Fourier transform infrared spectrometer typically plots the energy of electromagnetic radiation that passes through the material against a frequency or wave number. The FTIR spectra are captured ...
Overall, the FTIR spectra aided to confirm the presence of chitosan molecules in the CHCLAFs. The XRD measurements were performed in order to investigate the microstructural changes in the CHCLAFs caused during processing. XRD patterns of MCC, CHP, CLF and blended aerogel microfib- ers are ...