2022年10月20日 · Long-term mechanical treatment of chitosan with different molecular weight yields X-ray diffraction patterns with weakly differing profiles, so one can obtain an averaged amorphous chitosan and use it as the standard to routinely determine the crystallinity index of arbitrary chitosan samples.

Chitosan is a natural, cationic polysaccharide and it can be obtained from the deacetylation reaction of chitin by chemical or enzymatic methods and is therefore al-so called deacetylated chitin...

In order to directly determine Sam, an XRD pattern of a deliberately amorphous sample (Figure 1 b) is obtained either mechanically (long-term amorphization in a ball mill) or chemically...

Long-term mechanical treatment of chitosan with different molecular weight yields X-ray diffraction patterns with weakly differing profiles, so one can obtain an averaged amorphous chitosan and use it as the standard to routinely determine the crystallinity index of arbitrary chitosan samples.

In the present work, a novel method is exhibited for tuning the surface plasmon resonance (SPR) peaks of silver nanoparticles based on chitosan-Poly (vinyl alcohol) blend polymer nanocomposites....

2024年3月1日 · Magnesium ion-conducting biodegradable solid polymer electrolyte (SPE) films of magnesium perchlorate [Mg (ClO 4) 2] doped Chitosan [CS] were prepared using the solution casting technique at room temperature. XRD study shows that amorphous nature of the polymer matrix increases upon doping.

2024年4月26日 · Chitosan was synthesized from Archachatina marginata shell and characterized using Fourier transform infrared (FTIR), X-ray diffractometry (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray fluorescence (EDXRF), and energy-dispersive X-ray spectroscopy (EDS) and its antibacterial activity ...

X-ray diffraction (XRD) patterns of chitosan and chitosan nanoparticle powder were achieved by X-ray diffractometry (D8 DISCOVER, Bruker, Fällanden, Switzerland) at 40 kV, 40 mA and 2θ with the scan angle from 5° to 60° as described previously . The crystalline index (CI; %) was obtained from the area ratio of the crystal phase to the total ...

2015年4月1日 · The mechanical property of Chitosan were determined by X-ray Powder Diffraction (XRD), which is a rapid analytical technique primarily used for phase identification of a crystalline material and can provide information on unit cell dimensions.

X-ray Diffraction (XRD) analyses were carried out to determine the occurrence of complexation and whether the material is amorphous or crystalline (Sivakumar et al., 2006). To substantiate these results, Scanning Electron Microscopy (SEM) was performed.