The aim of this study was to prepare mosquito repellent textiles. To compare bio-based and synthetic mosquito repellent agents, limonene and permethrin were encapsulated with ethyl cellulose shell. Coacervation was employed, which is a simple and reproducible method for the encapsulation with high production efficiency. Morphological assessment showed that the capsules had smooth surfaces and their shape was spherical. The homogenous size distribution of the capsules was supported by laser diffraction analysis. The capsules showed narrow size distribution and the mean particle size of the optimum formulations for limonene and permethrin was 1 and 1.3 μm, respectively. The size of the produced capsules was considered suitable for textile applications. The FTIR spectra revealed the similarity of the chemical structure of capsules with shell material. Cotton fabrics were treated separately with limonene and permethrin capsules by padding method. The presence of capsules on the fabrics was determined after 20 washing cycles. Insecticide activity was evaluated against common house mosquitoes (Culex pipiens), with respect to cone bioassay of World Health Organization (WHO). Mosquitoes were tended to stay away from treated fabrics, and mortality rates of mosquitos were noted as 41% and 54% for limonene and permethrin, respectively. Although efficacy of fabrics decreased with increasing washing, the fabrics still showed repellency after 20 washing cycles. This study showed that the developed product might be used as an alternative to the other products in the market for avoiding mosquito-borne diseases.

中文翻译：

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柠檬烯和苄氯菊酯的微囊和纳米囊包用于棉织物的驱蚊整理

这项研究的目的是制备驱蚊纺织品。为了比较生物基驱蚊剂和合成驱蚊剂，柠檬烯和苄氯菊酯被乙基纤维素壳包裹。采用凝聚法，这是一种简单且可重现的封装方法，具有很高的生产效率。形态学评估表明，胶囊表面光滑，形状为球形。胶囊的均匀尺寸分布通过激光衍射分析得到支持。胶囊显示出窄的尺寸分布，柠檬烯和氯菊酯的最佳配方的平均粒径分别为1和1.3μm。所生产的胶囊的尺寸被认为适合纺织品应用。FTIR光谱揭示了胶囊与壳材料化学结构的相似性。棉织物分别用柠檬烯和苄氯菊酯胶囊通过填充法处理。在20个洗涤周期后确定织物上胶囊的存在。评估了杀虫剂对普通家庭蚊子的活性（淡色库蚊（Culex pipiens），与世界卫生组织（WHO）进行的锥孔生物测定有关。蚊子倾向于远离处理过的织物，而柠檬烯和苄氯菊酯的蚊子死亡率分别为41％和54％。尽管织物的功效随着洗涤次数的增加而降低，但在20个洗涤周期后，织物仍显示出排斥性。这项研究表明，开发的产品可以替代市场上其他产品，从而避免蚊媒疾病。