Wood-Rotting Fungal Pigments as Colorant Coatings on Oil-Based Textile Dyes
Wood-Rotting Fungal Pigments as Colorant Coatings on Oil-Based Textile Dyes
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DOI：
10.3390/coatings7100152
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发表时间：
2017-10-01
期刊：
影响因子：
3.4
通讯作者：
Robinson, Seri C.
中科院分区：
文献类型：
--
作者：
Agurto, Mardonio E. Palomino;Gutierrez, Sarath M. Vega;Robinson, Seri C.
合成纺织染料替代品的机会越来越重要，因为世界希望尽量减少其生态足迹。在一类独特的木材腐烂（“spalting”）真菌中的真菌颜料作为一种可能的解决方案已经研究了好几年，并且已经显示出非常适合作为纺织品染料涂层。不幸的是，目前用于这些着色剂的溶剂是二氯甲烷（DCM），这是一个环境问题以及潜在的人类致癌物。最近，研究人员发现来自Chlorociboria物种，Scytalidium cuboideum和Scytalidium ganodermophthorum的色素可以携带在一些天然油中，这开辟了一种潜在的方法，可以在不使用DCM的情况下将色素传递到基质上。虽然颜料可以在油中携带，但迄今为止还没有测试油如何影响颜料在纺织品上的粘合性能，或者油如何直接影响颜料。本文以亚麻籽油为原料，研究了三种常见木腐真菌产生的色素在棉、涤纶、尼龙等织物上的应用。只有红色颜料在纺织品上产生可见的颜色变化。当颜料滴到织物上时，棉和聚酯显示出最大的颜色变化，而当织物浸入颜料溶液中时，聚酯显示出最大的颜色。不幸的是，除了饱和度测试，所有测试的颜色都明显褪色。这表明，虽然天然油可能是DCM的优良无毒替代载体，但颜料在其中不稳定，除非在非常高的浓度下，因此天然油（包括生亚麻籽油）不适合与这些颜料一起使用。
Opportunities for alternatives to synthetic textile dyes are of increasing importance as the world looks to minimize its ecological footprint. Fungal pigments within a unique class of wood-rotting ("spalting") fungi have been under investigation for several years as a possible solution, and have been shown to be ideally suited as textile dye coatings. Unfortunately, the solvent currently in use for these colorants is dichloromethane (DCM), which is an environmental problem as well as a potential human carcinogen. Recently, researchers found that the pigments from Chlorociboria species, Scytalidium cuboideum, and Scytalidium ganodermophthorum could be carried in some natural oils, which opened up a potential method of delivering pigments onto a host of substrates without utilizing DCM. Although the pigments can be carried in oil, no testing has thus far been conducted as to how oil affects the binding properties of the pigments onto textiles, or how the oil might affect the pigments directly. In this paper, the pigments produced by three well-known wood-rotting fungi were carried in raw linseed oil and applied to cotton, polyester, and nylon. Only the red pigment produced visible color change on the textiles. Cotton and polyester showed the greatest color change when the pigments were dripped onto the fabric, while polyester showed the most color when the textile was submerged into the pigment solution. Unfortunately, the colors faded significantly for all the tests except the saturation test. This indicates that while natural oils may be excellent, nontoxic alternative carriers for DCM, the pigments are not stable within them except at very high concentrations, and therefore natural oils-including raw linseed oil-are not ideal for use in conjunction with these pigments.