ABSTRACT

In this study, the combined antimicrobial and mosquito repellency treatment on woven cotton fabric using microencapsulated Coleus aromaticus was optimized through Box Behnken experimental design tool. The methanol-based solvent extraction was carried out for the preparation of crude extract from coleus aromaticus. The microcapsules were prepared using Gum acacia as shell material and Coleus aromaticus leaf extract as core material. These capsules were applied over the Cotton fabric through pad-batch method. Three process parameters have been taken for optimization, such as microcapsule concentration (gpl), concentration of BTCA, and curing temperature. The treated fabrics were subjected to antimicrobial activity and mosquito repellency characterization. Subsequent to this, polynomial equation was developed for both antimicrobial activities, as well as mosquito repellency behavior. Through RSM analysis, the influences of each process variables on the response were analyzed. The optimum process parameters are such as the concentration of microcapsule 40gpl, the concentration of BTCA 67.5 gpl, and the curing temperature was 116°C. The combined desirability coefficient was found as 0.792. Further to this, SEM and FTIR studies were executed for the confirmation of microencapsulated treatment effectiveness.

摘要

在本研究中，通过 Box Behnken 实验设计工具优化了使用微囊化锦紫苏对机织棉织物的抗菌和驱蚊处理。采用甲醇溶剂萃取法制备芳香锦紫苏粗提物。以阿拉伯树胶为壳材料，以锦紫苏叶提取物为芯材料制备微胶囊。这些胶囊通过垫批法施加在棉织物上。已采用三个工艺参数进行优化，例如微胶囊浓度 (gpl)、BTCA 浓度和固化温度。对处理过的织物进行抗微生物活性和驱蚊性表征。随后，针对两种抗菌活性开发了多项式方程，以及驱蚊行为。通过RSM分析，分析了各个过程变量对响应的影响。最佳工艺参数为微胶囊浓度40gpl、BTCA浓度67.5gpl、固化温度116℃。组合合意系数为 0.792。此外，还进行了 SEM 和 FTIR 研究，以确认微胶囊治疗的有效性。