天然染料的染色技术与媒染方法

Dyeing Technology and Mordant Dyeing Methods of Natural Dye

天然染料是指自然界植物、动物或矿物中含有丰富色素且具有染色价值的天然材料,也包括从这些天然材料中提取色素制成的利于环保、益于健康的有机染料。天然媒染剂是指在染色过程中,使色素和纤维增强染着亲和力的酸、碱、蛋白质、单宁或金属离子等天然媒介物质。由于大多数天然染料属于媒染染料,在其染色中媒染是不可缺少的工艺步骤,需要通过天然媒染剂,运用先媒染、中媒染、后媒染或同浴媒染等方法,使色素渗入、定着于纤维中,达到发色和固色的目的。

Natural dyes are natural materials which derived from plant, animal or mineral materials, are whole-some organic dyes. Natural mordant is refers in the mordant dyeing process, the pigment and fiber re-inforced with affinity to the acid, alkali, protein, tannin or metal ions and other media material. The majority of natural dyes are mordant dyes, mordant is indispensable in dyeing process.