The influence of sublimation transfer printing on alteration of the structural and physical properties of knitted fabrics was investigated in this research study. Seven different knitted fabrics, which differed in terms of structure and raw material composition (polyester, cotton and cotton/polyester), were printed using the sublimation transfer technique. For the sublimation of cotton/polyester and cotton knitted fabrics, a coating powder was used for paper modification with the aim to bond reactive ink to the natural fibres. The influence of yarn parameters, pattern and the density of knitted fabrics on the degree of changes after the printing process was considered. Smaller changes in structural and physical properties were recorded for polyester knitted fabrics, while major changes in structure were observed in knitted fabrics containing cotton fibres, where were weight gain and reduction in geometrical roughness values. In addition, a significant change in density was recorded for polyester printed knitted fabrics. The parameters that influenced the colour difference results for polyester knitted fabrics were the yarn parameters and the pattern. Significantly high colour difference values were obtained for cotton (from 7.9 to 14.2) and cotton/polyester (from 8.5 to 14.4) knitted fabrics. The main reason for the high colour difference results was the alteration in the structure of the knitted fabrics.

中文翻译：

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热升华转移印花对针织物结构和物理性能变化的影响

本研究研究了升华转移印花对针织物结构和物理性能变化的影响。使用升华转印技术印刷了七种不同的针织物，它们在结构和原料成分（聚酯，棉和棉/聚酯）方面有所不同。为了使棉/聚酯和棉针织物升华，将涂料粉末用于纸张改性，目的是将反应性油墨粘合到天然纤维上。考虑了纱线参数，花型和针织物密度对印花过程后变化程度的影响。涤纶针织物的结构和物理性能变化较小，而在包含棉纤维的针织物中观察到结构的重大变化，其中包括增重和几何粗糙度值的减小。此外，聚酯印花针织物的密度也发生了显着变化。影响聚酯针织物色差结果的参数是纱线参数和花型。棉（从7.9到14.2）和棉/涤纶（从8.5到14.4）针织织物获得了很高的色差值。高色差结果的主要原因是针织物结构的改变。影响聚酯针织物色差结果的参数是纱线参数和花型。棉（从7.9到14.2）和棉/涤纶（从8.5到14.4）针织织物获得了很高的色差值。高色差结果的主要原因是针织物结构的改变。影响聚酯针织物色差结果的参数是纱线参数和花型。棉（从7.9到14.2）和棉/涤纶（从8.5到14.4）针织织物获得了很高的色差值。高色差结果的主要原因是针织物结构的改变。