Korea Polymer Journal, Vol.7, No.1, 24-29, February, 1999
Aggregation Characteristics of Thionine-PVS and -SDS Systems in the Presence of Chitosan
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The spectral behaviors of cationic dyes of thionine (Th) with varying concentration of polyvinylsulfate (PVS) and sodium dodecylsulfate (SDS) had been studied by absorption spectroscopy. Aggregation characteristics of Th-PVS-chitosan and Th-SDS-chitosan systems were investigated by degree of deacetylation of chitosan. Chitosan A,B and C with degree of deacethylation (0.87, 0.79, and 0.66) used were prepared by using NaOH 30, 40, and 50%, respectively. When chitosan A, B, and C were added to Th-SDS systems for S/D<80 system, the absorbance of Th-SDS-chitosan A, B, and C systems compared with that of Th-SDS systems showed the decreasing tendency. On the other hand, when chitosan A, B, and C were added to Th-PVS systems for P/D=0∼3000, the absorbance of Th-PVS-chitosan A, B, and C systems relative to Th-PVS systems showed the highly increasing tendency.
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