Ultraviolet Radiation Protection of a Naturally Colored Lightweight Cotton Fabric
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The purpose of this study was to examine the effects of perspiration, weathering exposure, and repeated laundering on ultraviolet radiation protection of a naturally colored cotton lightweight fabric that is suitable for summer clothing. The research design was a repeated measures experimental design with 2 perspiration (perspiration and no perspiration) x 3 weathering exposure (semi-tropical climate, semi-arid climate, and the standard textile testing condition), and repeated measures before and after each laundry cycle, up to 15 cycles. The findings showed that laundering without weathering increased the protection, whereas weathering significantly reduced the protection. The high humidity in the semi-tropical climate facilitated the decline of protection, but perspiration played a role in slowing down the reduction. The lowest Ultraviolet Protection Factor (UPF) value after 15 laundering cycles was found in the specimen after the exposure to a hot and humid semi-tropical climate without perspiration treatment.