The formation of complex consisting of poly (vinyl alcohol) (PVA), iodine and boric acid in the presence of poly (D-glutamic acid) (PGA) and poly (acrylic acid) (PAA) and its light polarizing properties were investigated by the UV and polarizing microscope. The formation of complex was greatly accelerated by the PGA and PAA, respectively, due to the enhancement of the aggregation of PVA chains. The increase in absorbance of the complex formed 24 hrs after preparation of the PVA - PAA system is larger than that of complex formed by mixing simultaneously. The complex formed in the presence of PAA is not dependent on the degree of polymerization of but the saponification of PVA. When the analyzer and light polarizing film formed in the presence of PAA is turned against each other the alternate appearance of dark and lighter sides is observed through polarizing microscope.

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