TGA (thermal gravimetric analysis) was used to evaluate the thermal stability and to determine the decomposition temperature of prepared chitosan and chitosan film.
Thermogravimetric measurements were made using a Mettler-Toledo thermogravimetric analyzer model TGA/SDTA851e.
The temperature range studied was 50-1000 ◦C at a heating rate of 10 ◦C/min under a nitrogen atmosphere. The mass of the sample pan was continuously recorded as a function of temperature.