对用天然色素染色的棉织物的紫外线防护性能的评估。
An evaluation of UV protection imparted by cotton fabrics dyed with natural colorants.
作者信息
Sarkar Ajoy K
机构信息
Design and Merchandising, Colorado State University, Fort Collins, Colorado, USA.
出版信息
BMC Dermatol. 2004 Oct 27;4(1):15. doi: 10.1186/1471-5945-4-15.
BACKGROUND
The ultraviolet properties of textiles dyed with synthetic dyes have been widely reported in literature. However, no study has investigated the ultraviolet properties of natural fabrics dyed with natural colorants. This study reports the Ultraviolet Protection Factor (UPF) of cotton fabrics dyed with colorants of plant and insect origins.
METHODS
Three cotton fabrics were dyed with three natural colorants. Fabrics were characterized with respect to fabric construction, weight, thickness and thread count. Influence of fabric characteristics on Ultraviolet Protection Factor was studied. Role of colorant concentration on the ultraviolet protection factor was examined via color strength analysis.
RESULTS
A positive correlation was observed between the weight of the fabric and their UPF values. Similarly, thicker fabrics offered more protection from ultraviolet rays. Thread count appears to negatively correlate with UPF. Dyeing with natural colorants dramatically increased the protective abilities of all three fabric constructions. Additionally, within the same fabric type UPF values increased with higher depths of shade.
CONCLUSION
Dyeing cotton fabrics with natural colorants increases the ultraviolet protective abilities of the fabrics and can be considered as an effective protection against ultraviolet rays. The UPF is further enhanced with colorant of dark hues and with high concentration of the colorant in the fabric.
背景
用合成染料染色的纺织品的紫外线特性在文献中已有广泛报道。然而，尚无研究调查用天然色素染色的天然织物的紫外线特性。本研究报告了用植物和昆虫来源的色素染色的棉织物的紫外线防护系数（UPF）。
方法
用三种天然色素对三种棉织物进行染色。对织物的组织结构、重量、厚度和纱线密度进行了表征。研究了织物特性对紫外线防护系数的影响。通过色强度分析研究了色素浓度对紫外线防护系数的作用。
结果
观察到织物重量与其UPF值之间呈正相关。同样，较厚的织物能提供更多的紫外线防护。纱线密度似乎与UPF呈负相关。用天然色素染色显著提高了所有三种织物结构的防护能力。此外，在相同织物类型中，UPF值随染色深度的增加而增加。
结论
用天然色素对棉织物进行染色可提高织物的紫外线防护能力，可被视为一种有效的紫外线防护措施。深色色素以及织物中高浓度的色素可进一步提高UPF。
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