The TGA thermogram of the chitosan film (Fig. 10a) shows two stages of weight loss. The first stage occurs between 100 and 250 °C [31] and is due to the loss of water associated with the ...

The formed chitosan was characterized by Fourier-Transform Infrared Spectroscopy (FT-IR), Thermogravimetric Analysis (TGA), X-ray Diffraction (XRD), and Scanning Electron Microscopy (SEM).

2015年2月1日 · In this study, chitosan, a commercially-available linear polysaccharide mainly used as antibacterial agent, functional coating and drug-delivery system, is investigated to enlighten both water interactions and its thermal stability by using a set of complementary advanced thermal techniques, rarely applied in polysaccharides characterizations.

Chitosan be a biopolymer, which is an amino polysaccharide resultant from the N-deacetylation of Chitin. It is an ordinary polymer because of the occurrence of degradable enzyme Chitosanase....

Since the stability of the films is critical for a variety of applications, a comprehensive study of the chitosan and chitosan composite films was carried out by TGA. Their thermal stability and thermal behavior was obtained.

2022年8月28日 · Thermogravimetric analysis (TGA) of chitosan samples provides essential information about the thermal stability of chitosan. The energy-dispersive spectroscopy (EDS) X-ray microanalysis estimates the presence of elements in the chitosan sample.

2012年4月10日 · The chitosan-chromone derivative was evaluated by X-ray diffraction (XRD), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), scanning electron microscopy (SEM), photoluminescence (PL) and circular dichroism (CD).

2015年2月1日 · Studies on the glass transition temperature (Tg) of chitosan are difficult to pursue because of the difficulty in sample preparation and the hydroscopicity of samples. There are a few works… ABSTRACT: Chitosan films were prepared using 3 chitosan molecular weights and 4 organic acid solvents without plasticizer.

2021年1月1日 · Both Tg and Tm of chitosan can be observed in hydrochloric and acetic acid films. Citrate ions play a major role in the plasticization of chitosan films. Film structure and properties can be modified by changing the solvent type.

TGA analysis proved the increase in thermal stability with cross-linking while FTIR confirmed the cross-linking of chitosan. Maximum cobalt adsorption of 144 mg/g occurs at 600 ppm salt...