Supercritical CO2 dyeing for nylon, acrylic, polyester, and casein buttons and their optimum dyeing conditions by design of experiments
Supercritical CO2 dyeing for nylon, acrylic, polyester, and casein buttons and their optimum dyeing conditions by design of experiments
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DOI：
10.1016/j.jcou.2019.05.013
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发表时间：
2019-10-01
影响因子：
7.7
通讯作者：
Zheng, Laijiu
中科院分区：
文献类型：
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作者：
Bai, Tierong;Kobayashi, Kota;Zheng, Laijiu
超临界二氧化碳（scCO（2））染色是一种环保、节能的绿色工艺。我们开发了一种紧凑的scCO（2）染色装置，并在温度T、压力P和染色时间t下对尼龙、腈纶、聚酯和酪素塑料钮扣进行了scCO（2）染色，颜色均匀。通过Kubelka-Munk方程计算K/S值，计算染料在钮扣上的染色深度，考察染料在钮扣上的吸附情况。根据田口试验设计的极差分析和方差分析，我们找到了塑料钮扣染色的K/S值的最佳染色条件：尼龙T = 125 ℃，P = 27 MPa，t = 80 min，腈纶T = 50 ℃，P = 14 MPa，t = 40 min，T = 120 ℃，P = 12 MPa，聚酯为t = 30 min，酪蛋白为T = 80 ℃，P = 10 MPa，t = 30 min，以及所有塑料树脂纽扣的最大影响因素和影响因素等级。此外，利用CIE L*a*B* 理论，对尼龙、腈纶、涤纶、酪素等塑料钮扣在最佳操作条件下染色后的色差Δ E* 进行了评价。
Supercritical carbon dioxide (scCO(2)) dyeing for textile and polymer processing is considered as a green and energy-saving process for view-points of environmental friendly and sustainable development. We developed a compact scCO(2) dyeing apparatus and performed scCO(2) dyeing for plastic buttons of nylon, acryl, polyester, and casein with a uniformly color at the temperature T, pressure P, and dyeing time t. The dye sorption in the buttons was examined by the dyeing color depth, which was evaluated by K/S values calculated from Kubelka-Munk equation. From the range analysis and variance analysis based on the Taguchi design of experiments, we found an optimum dyeing condition of K/S values for dyeing plastic buttons at T = 125 degrees C, P = 27 MPa, and t = 80 min for nylon, T = 50 degrees C, P = 14 MPa, and t = 40 min for acrylic, T = 120 degrees C, P = 12 MPa, and t = 30 min for polyester, and T = 80 degrees C, P = 10 MPa, and t = 30 min for casein, as well as the most influential factor and rank of influence factors for all plastic resin buttons. In addition, the color difference Delta E* of plastic buttons of nylon, acrylic, polyester, and casein dyed at the optimum operation conditions was evaluated by CIE L*a*b* theory.