A novel scCO2 dyeing strategy for superior coloration of UHMWPE fiber
A novel scCO2 dyeing strategy for superior coloration of UHMWPE fiber
复制标题
DOI：
10.1016/j.polymer.2023.125873
复制
发表时间：
2023-03
期刊：
影响因子：
4.6
通讯作者：
Yao Zhou;T. A. Lima;Z. Hinton;C. Henry;Madhu Anand;N. Alvarez
中科院分区：
文献类型：
--
作者：
Yao Zhou;T. A. Lima;Z. Hinton;C. Henry;Madhu Anand;N. Alvarez
超高分子量聚乙烯（UHMWPE）纤维具有任何可用材料（包括金属）中最高的刚度重量比。然而，它们在消费品中的适用性却令人惊讶地有限。其中一个原因是UHMWPE纤维不能容易地染色，即纤维仅以透明或黑色（碳颗粒填充）可用。由于拉伸UHMWPE纤维的高结晶含量，使UHMWPE纤维着色的尝试仅实现有限的染料吸收。在本研究中，我们证明了在拉伸前通过scCO2对初纺纤维进行染色，拉伸UHMWPE可能具有高上染率和高颜色强度。经证明，初生纤维可通过标准方法拉伸成染色的高性能纤维。对拉伸后染色的UHMWPE纤维和标准PET纤维的颜色强度进行了比较。在拉伸过程中测量机械性能，以证明染料的存在不会降低纤维的可拉伸性或机械性能。
Ultra-high-molecular-weight-polyethylene (UHMWPE) fibers have the highest stiffness-to-weight ratio of any available material, including metals. However, their applicability in consumer products is surprisingly limited. One reason for this is the inability to readily dye UHMWPE fibers, i.e. the fibers are only available in clear or black (carbon particle filled). Attempts to color UHMWPE fibers have only achieved limited dye uptake due to the high crystalline content of drawn UHMWPE fibers. In this study, we demonstrate that high dye uptake and high color intensity are possible in drawn UHMWPE via scCO2 dyeing of the as-spun fibers prior to drawing. The as-spun fibers are demonstrated to be drawn via standard methods into dyed high-performance fibers. Comparison of color intensity is made with UHMWPE fibers dyed after drawing and standard PET fibers. Mechanical properties are measured during the drawing process to demonstrate that the presence of dye does not reduce the drawability or the mechanical properties of the fibers.