Tropaeolin OO 염료를 이용한 양모 및 나일론 섬유의 염색 및 산성용액에서의 색변화|RISS 상세보기

다국어 초록 (Multilingual Abstract)

We conducted previous research to apply several halochromic dyes to wool or nylon woven fabrics for the development of a textile chemosensor that can detect acidic solutions. In this study, we investigated the dyeing and acid-sensing properties of tropaeolinOO, a pH-indicating dye, on wool or nylon 66 woven fabrics. The maximum absorptionwavelength of tropaeolin OO in an aqueous solution was found to be 440-450 nm with alight orange color in the pH range of 4 to 12. At pH 0.5 and 1, the maximum absorptionwavelength shifted to 530 nm, resulting in a purple color. Between pH 1.5 and 3, theabsorption curves showed an intermediate shape with a mixture of colors, ranging fromred to orange. The color yields (K/S) of the dyed wool fabric were highly dependent on thedyebath pH and the dye concentration. The nylon fabric showed lower K/S values than thewool but exhibited good color yield. When the control sample dyed at pH 4 and a dye concentrationof 1% o.w.f, was immersed in acidic solutions ranging from pH 1.5 to 5, no significantcolor changes were observed above pH 2.5. However, at pH 2 or below, the originalorange color changed remarkably to dark purple or brown for wool and brown for nylonfabric. Neutralization of the discolored samples led to a complete recovery of the originalorange color, indicating the possibility of repeated sensing. The dyed wool fabric showedmoderate wash fastness and good rubbing fastness, while the nylon fabric exhibited goodwash fastness and excellent rubbing fastness properties. These results suggest the potentialapplication of both fabrics as acid-detecting textile sensors.

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참고문헌 (Reference)

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