Synthesis of monochlorotriazinyl-β-cyclodextrin and its application in cotton fabric

Since β-cyclodextrin(β-CD) hasn′t affinity with cotton fabrics and contains no reactive group,in order to graft the β-CD onto cotton fabrics,this article synthesized the monochlorotriazinyl-β-cyclodextrin(MCT-β-CD) from cyanuric chloride,β-CD and NaOH in aqueous solution and studied the grafting process.The synthesis process obtained was as follows: the mass ratio of cyanuric chloride to β-CD was 3∶1,volume of reaction solution was 80 mL,and reaction time was 9 hours;and the grafting process as follows: the mass concentration of MCT-β-CD and N2CO3 was 120 g/L,and 30 g/L,respectively,curing at 150 ℃ for 5 min.FT-IR confirmed that the cyanuric chloride reacted with β-CD;alkaline phenolphthalein experiment demonstrated that the β-CD successfully grafted onto cotton fabric and had high washing fastness.