자연계에 풍부한 천연고분자물질인 키틴을 탈아세틸화하여 얻어지는 키토산을 색소의 흡착제로 이용하고자, 색소 Toluidine Blue O(TBO)에 대한 키토산의 흡착 특성을 연구하였다. 키토산과 TBO의 흡착반응에는 키토산 입경, 키토산의 양, TBO의 초기 농도, 반응액의 pH, 반응시간 등이 중요한 인자로 작용하는 것으로 밝혀졌다.
Chitosan, a deacetylated polymer of chitin, was applied and characterized as an adsorbent for a dye Toluidine Blue O. The adsorption of Toluidine Blue O by chitosan was affected by the particle sire and mass of chitosan, initial dye concentration, reaction time, and solution pH. More dye was adsorbed the smaller the chitosan particles. When initial ratio of dye to chitosan was over 1 : 500, the adsorption of dye was rapidly declined. Adsorption rate of dye to chitosan showed 2 phases, rapidly occurred one at the beginning within 3 min and thereafter very slowly occurred one. The amount of dye adsorbed was increased with increase in pH.
