メイラード反応で着色した羊毛の染色堅ろう度と繊維物性

摘要

最近，一部の芳香族ァミンが，発がん性物質ゃァレルギー疾患の原因物質として報告されており，繊維工業の分野においても，芳香族ァミンおよびこれらを原料とする合成染料（特に，ァゾ染料）の使用が欧州や中国を中心に規制されている。日本の企業においても，エコマークや国際規格であるェコテックス（OecoTex)などの基準を参考にして芳香族ァミンが検出される衣料品の使用を自主的に規制している。%In our previous paper, it was reported that polyamide fibers such as wool, silk, and nylon were colored brown in an aqueous solution including reducing sugars, similar to natural food colorations. These coloration reactions are well-known as Maillard reaction in the field of food chemistry. In this paper, various color fastness tests of wool fibers colored by D-xylose, one of reducing sugars, were performed to compare with conventional dyestuffs. Interestingly, the results of color fastness tests to washing, hot water, acid/alkaline spotting, perspiration, and rubbing were superior to those for conventional synthetic dyestuffs, which supports our prediction that these coloration materials were introduced on fibers by their covalent bonds. Furthermore, new usage of these fibers except for fiber coloring was also investigated by the measurement of their fiber properties, such as various hydrophilic properties, mechanical strength, and UV shielding effect.