Abstract
To study the effect of a washing machine with silver nano technology on its detergency, the discoloring of the dyed clothes and the staining of standards adjacent fabrics were examined. As the laundry specimen, cotton fabric dyed with reactive dyes and Polyester fabric dyed with disperse dyes were chosen; and as the adjacent fabrics, undyed cotton. polyester and nylon fabrics were chosen. The colorfastness was evaluated after washing under conditions that those washing temperature, liquor ratio, detergency concentration and the type of water were varied. When the clothes were washed with the tap water contains silver ion, the deposition of silver compounds into the washed clothes was measured. As a results, after the washing in the various conditions, discoloring of the dyed clothes was not intense. The higher the washing temperature and the lower the liquor ratio, the larger the staining appeared on the white fabrics; especially for the white nylon fabrics. The concentration of detergent and the type of water affected hardly the colorfastness. After the repeated washing with the water contains silver, whiteness of the cotton and the nylon fabrics were lower than the result after the washing with the tap water, and a quantity of silver ions was found on the washed clothes.
은나노를 이용한 드럼식 세탁기로 세탁한 경우 발생되는 세탁물의 변퇴색 및 오염현상을 관찰하기 위해 이와 유사한 세탁원리를 갖는 론더로메타를 이용하여 그 결과를 알아보았다. 반응성염료로 염색한 면직물과 분산염료로 염색한 폴리에스터 직물을 세탁포로 하고, 첨부 백포로 면, 폴리에스테르, 나일론을 이용하여, 세탁온도, 세탁액비, 세제 농도, 세탁용수를 변화시켜 세탁물의 염색견뢰도를 관찰하였고, 은물로 세탁한 경우 세탁물로의 은침착 여부를 관찰하였다. 그 결과, 세탁조건에 따른 염색포의 변색은 크지 않았으나, 세탁온도가 높고, 세탁 액비가 낮은 조건에서 첨부 백포로의 오염이 크게 나타났고, 특히 나일론 첨부 백포로의 오염이 컸다. 세제농도와 세탁용수는 염색견뢰도에 큰 영향을 미치지 않았다. 세탁용수를 달리하여 세제없이 백포만 반복 세탁한 경우, 은물로 세탁한 면, 나일론은 수돗물로 세탁한 경우보다 백도가 약간 낮게 나타났으며, 정량분석 결과 세탁물에 은화합물이 침착되었음이 확인되었다.
