4.1 Properties of PVA/chitosan(CH) solutions
Blended ratios of PVA/chitosan solutions are divided into eleven ratios from both 10wt% PVA/2wt% chitosan and 10wt% PVA/3wt% chitosan, respectively. The weight ratios of PVA/chitosan solutions are varied ranging from 100/0 to 0/100, respectively. TABLE 4-1 represents polymer weight(g) in blended solution of 10wt%PVA blended with chitosan at concentration of 2wt% and 3wt%, respectively which are calculated from actual weight of PVA-to-chitosan solutions per 100 g, and also weight fractions of PVA/CH are shown in TABLE 4-1.