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        Development of Anti-Mosquito Spray Formulation Based on Lipid-Core Nanocapsules Loaded with Cinnamaldehyde for Fabrics Application

        Azlan Kamari,Siti Najiah Mohd Yusoff,Siew Tin Susana Wong,Norjan Yusof,Hidayatulfathi Othman,Mohd Zobir Hussein,Esther Phillip 한국섬유공학회 2022 Fibers and polymers Vol.23 No.8

        In this study, poly(ε-caprolactone) lipid-core nanocapsules containing cinnamaldehyde were prepared byinterfacial deposition of pre-formed polymer and used for the first time in mosquito-repellent spray formulations on cotton,polyester and tetoron cotton fabrics. The synthesized nanocapsules formulations were characterized by dynamic lightscattering and Fourier transform infrared spectroscopy analyses. The retention of cinnamaldehyde-loaded lipid-corenanocapsules (Cin-LNCs) on cotton and polyester fabrics, before and after washing and heating, was studied using scanningelectron microscopy (SEM) and UV-Vis spectrometry. The repellency effect of fabrics treated with the Cin-LNC formulationagainst mosquitoes was evaluated in the laboratory using the Excito chamber method and in field trials conducted on rubberfarms. The SEM images and UV-Vis spectrometry results suggested that the fabrics treated with the Cin-LNC formulationshowed outstanding resistance to washing and heating. No skin irritation by treated fabrics was recorded in human volunteerswho took part in a 4-hour patch test. The treated fabrics exhibited good mosquito repellency (greater than 96 %) and were stillable to offer around 30 % repellency even after five cycles of washing and heating. The results indicate that the use of poly(ε-caprolactone) lipid-core nanocapsules is a promising technique to improve the fastness and longevity of repellents onfunctional textiles for insect control.

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