Manufacturing Technique and Deodorization Effectiveness against Ammonia Gas of Bamboo Charcoal/Spandex Complex Knitted Fabrics

This research creates bamboo charcoal/spandex (BC/S) complex yarns from spandex and bamboo charcoal polyester textured yarn. In order to manufacture a BC/S complex yarn with better mechanical properties in tensile strength and strain, the expanded multiples of the spandex are changed, as are the wrap counts of the BC/S complex yarn and the speed of the rotor twister. The resulting spandex has a maximum breaking strength of 4.52 g/d when the expanded multiple is 3.5, and the BC/S complex yarn has a wrap count of 2 turns/cm. Furthermore, the maximum breaking elongation is 24.57% when the expanded multiple is 3.5, and the wrap count is 4.5 turns/cm. This paper also explores the ammonia gas adsorption properties (deodorization) of BC/S complex yarn, and discovers that polyester knitted fabric is capable of deodorizing 39% of NH ₃ , while 1.2% bamboo charcoal/polyester knitted fabric can deodorize 53% of NH ₃ , and BC/S complex knitted fabric can deodorize 55%-61% of NH ₃ .