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The influence of structural properties on the dye diffusion and dyeabilty of PA 6 fibres

机译：结构性能对PA 6纤维的染料扩散和可染性的影响

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摘要

The relationships were investigated between the structural and dyeing properties of different structurally modified PA 6 fibers. PA 6 monofilament yarn samples were applied having different crystalline degrees and different content of alpha, respectively gamma crystalline modification. The diffusion coefficients of two different acid dyes were determined together with the content of dyestuff absorbed (under specific conditions) by fiber samples. In order to estimate colorimetry method from the viewpoint of polymer structural change detection, the colors of the dyed PA 6 samples were determined (L~*, a~*, b~*, C~*, h coordinates) and the color differences (ΔL~*, Δa~*, Δb~*, ΔC~*, ΔH~*, ΔE~*) were calculated between untreated standard and structurally modified samples. The dyeability of PA 6 fibers depended mainly on the way in which crystallinity had been achieved, i.e. on the material's history. Different crystalline modifications caused different sorption properties and fiber dyeability. Smaller increases (app 20%) of crystallinity degree caused a decrease in diffusion coefficients. Contrary to expectations, the significant increase of crystallinity degree (app 50%) had an influence on the increase of dyeability, presumably owing to the formation of larger empty spaces in the structure. The results achieved by colorimetry were in good correlation with dye absorption measurements. The colorimetry of dyed fiber samples was sensitive enough to detect even small differences in the quantities of absorbed dyestuff.
机译：研究了不同结构改性的PA 6纤维的结构和染色性能之间的关系。施加具有不同结晶度和不同含量的α或γ结晶变体的PA 6单丝纱线样品。测定两种不同酸性染料的扩散系数，以及纤维样品吸收的染料含量（在特定条件下）。为了从聚合物结构变化检测的角度估计比色法，确定了染色的PA 6样品的颜色（L〜*，a〜*，b〜*，C〜*，h坐标）和色差（在未经处理的标准样品与结构改性样品之间计算了ΔL〜*，Δa〜*，Δb〜*，ΔC〜*，ΔH〜*，ΔE〜*）。 PA 6纤维的染色性主要取决于达到结晶性的方式，即取决于材料的历史。不同的结晶修饰导致不同的吸附性能和纤维可染性。结晶度的较小增加（大约20％）导致扩散系数降低。与预期相反，结晶度的显着提高（约50％）对染色性的提高有影响，大概是由于在结构中形成了较大的空白空间。通过比色法获得的结果与染料吸收测量值具有良好的相关性。染色纤维样品的比色法足够灵敏，甚至可以检测出吸收染料量的微小差异。

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  • 来源
    《Materials Research Innovations》 |2003年第6期|p. 358-365|共8页
  • 作者

    Simona Strnad; Slava Jeler; Karin Stana-Kleinschek; Tatjana Kreze;

  • 作者单位

    Laboratory for Characterization and Processing of Polymers, Institute of Textile Chemistry, Ecology and Color Science, Faculty of Mechanical Engineering, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia;

    Laboratory for Characterization and Processing of Polymers, Institute of Textile Chemistry, Ecology and Color Science, Faculty of Mechanical Engineering, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia;

    Laboratory for Characterization and Processing of Polymers, Institute of Textile Chemistry, Ecology and Color Science, Faculty of Mechanical Engineering, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia;

    Laboratory for Characterization and Processing of Polymers, Institute of Textile Chemistry, Ecology and Color Science, Faculty of Mechanical Engineering, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 一般工业技术;
  • 关键词

    Fibers4aPolyamide 6; Crystallinity; Structural modifications; Dyeing; Colorimetry; Diffusion coefficient;

    机译：4a聚酰胺6纤维;结晶度;结构改性;染色;比色法;扩散系数;

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