A Study on Natural Dyes Extracted from Eichhornia crassipes and Thespesia populnea Flowers on the Functional and Physical Properties

ABSTRACT

In this study, Eichhornia crassipes and Thespesia populnea flowers were collected and composites were prepared using the Soxhlet apparatus. The flower composites were finished to polyester and cotton fabrics by mordants of alum, CuSO₄, and FeSO₄. The mordants were determined by wash fastness tests such as fastness to washing, alkalis and acids, perspiration, and light. Two common pathogens were tested for synergistic antibacterial activity of flower composites, and the physical tests were evaluated for control and finished fabrics. Alum showed excellent color fastness than other mordants. Alum-finished fabrics showed higher antibacterial activity. In the inhibitory zones, the cotton fabrics were observed as 31 mm and 29 mm, and the polyester fabrics were observed as 30 mm and 29 mm. Both the inhibitory zones are against E. coli and S. aureus. The tensile strength, air permeability, and dimensional stability were slightly reduced on the finished polyester and cotton fabrics when compared with control fabrics. Control fabrics showed no pilling, and the finished fabrics showed slight pilling. Finishes on fabrics showed a slight increase in the GSM of the finished fabrics.

摘要

在本研究中, 采集凤眼莲和胡杨花, 并使用索氏仪制备复合材料. 以明矾, 硫酸铜和硫酸亚铁为媒染剂, 对涤纶和棉织物进行了花卉复合整理. 媒染剂通过耐洗, 耐碱, 耐酸, 汗渍和耐光等耐洗牢度试验进行测定. 测试了两种常见病原体对花卉复合材料的协同抗菌活性, 并对对照织物和成品织物进行了物理测试. 明矾的色牢度优于其他媒染剂. 明矾整理后的织物具有较高的抗菌活性. 在抑制区内, 棉织物为31mm和29mm, 涤纶织物为30mm和29mm. 这两个抑制区都是针对大肠杆菌和金黄色葡萄球菌的. 与对照织物相比, 涤纶和棉织物的拉伸强度, 透气性和尺寸稳定性略有降低. 对照织物无起球现象, 成品织物有轻微起球现象. 织物上的整理表明, 整理后织物的GSM略有增加.

KEYWORDS:

• Alum
• antibacterial
• Eichhorni acrassipes
• natural dyes
• Thespesia populnea
• wash fastness

关键词:

• 明矾
• 抗菌
• 凤眼莲
• 天然染料
• 白杨
• 耐洗牢度

Disclosure statement

No potential conflict of interest was reported by the author(s).