Thermal retention performance and gas removal effect of bamboo charcoal/PET blended fibers

The bamboo charcoal material was added in a polyethylene terephthalate (hereafter referred to as PET) fiber spinning process in various proportions controlled at 0.5, 1.0, 1.5, 2.0, and 2.5% by weight to compose bamboo charcoal/PET blended fibers (hereafter referred to as BCE). The halogen light radiation method and thermo-vision analysis were applied to estimate the effect of bamboo charcoal content on the thermal retention performance of BCE. The gas removal effect was performed by evaluating the adsorption capability for ammonia gas in 100 ppm primary concentration of BCE. For a comparison, a carbon black/PET blended fiber (hereafter referred to as CBE) with a content of 1.5 wt.% commercial dope dyed carbon black material was utilized. The result indicated that BCE in all compositions showed the better thermal retention performance than CBE, and the 1.5 wt.% BCE achieved the highest values of relative temperature ascension and relative temperature retention of 0.70 degrees C and 0.44 degrees C, respectively. The gas removal test showed that the adsorption capability for ammonia gas could be improved by increasing the blending ratio of bamboo charcoal, that BCE in all compositions showed better gas removal effect than CBE, and that the highest reduction rate for ammonia gas was 52% of 2.5 wt.% BCE; for 1.5 wt.% CBE, the reduction rate was only 18%.