Which chitosan/PVA blend has better thermal stability?

Fig.3.1 TGA curve for Chitosan/PVA blends 744 AgilAbraham et al. / Procedia Technology 24 ( 2016 ) 741 – 748 After 10% reduction, 2% Chitosan have better thermal stability, when compared with other 0, 4, 6, 7% Chitosan. Similarly, after 20% reduction 2% Chitosan have better thermal stability than others.

How are chitosan-PVA films prepared?

Methods 2.2.1. Preparation of Chitosan-PVA films The polymer films were prepared by casting method.

Why is chitosan a natural polymer?

It is a natural polymer because of the presence of degradable enzyme Chitosan. Chitosan is blended with synthetic polymer PVA with formaldehyde enhances the thermal stability. Thermogravimetric analysis was conducted to measure the weight loss of the above mentioned blend systems at a heating rate 10 o Cmin -1 in nitrogen atmosphere.

How to prepare chitosan solution?

Chitosan solution were prepared by dissolving Chitosan about 0.05g,0.10g,0.15g,0.20g,0.25g,0.30g,0.35grams, in 50ml 1% aqueous acetic acid solution at room temperature, using sonicator. 1% aqueous acetic acid solution is prepared by mixing 1ml glacial acetic acid to 99ml water.

Does chitosan-PVA tensile strength decrease with decrease in PVA content?

Various compositions of Chitosan-PVA blends have been studied for its thermal and mechanical properties. The mean tensile strength and percentage elongation of Chitosan-PVA blends decreases with decrease in PVA content.

Does chitosan blend improve thermal stability?

Chitosan is blended with synthetic polymer PVA with formaldehyde enhances the thermal stability. Thermogravimetric analysis was conducted to measure the weight loss of the above mentioned blend systems at a heating rate 10oCmin-1 in nitrogen atmosphere.