Deodorant performance of titanium dioxide-added acrylic/cellulose diacetate blended fibers

Abstract

To obtain acrylic fiber with excellent deodorant performance, the effects of titanium dioxide photocatalyst were examined. When titanium dioxide was added to acrylonitrile copolymer and wet spun, the resulting fiber displayed insufficient photocatalytic activity. The acrylonitrile copolymer was then mixed with 30 wt% cellulose diacetate and wet spun. A very finely fibrillated structure resulted, and the official moisture regain of the blend fiber doubled, from 2.03% to 4.03%. While applying ultraviolet (UV) light to these blended fibers, the dye decomposition effect of the fibers was examined. When titanium dioxide was then added, significant dye decomposition ability appeared. When the blend fiber containing cellulose diacetate was saponified by alkali, the official moisture regain increased by 2.5–2.8%, and dye decomposition ability improved. While applying UV light to these acrylic-based fibers, the deodorant ability against ammonia gas was also examined. Fibers with cellulose diacetate deodorized ammonia well within six hours. For the saponified blend fiber with 5.0 wt% titanium dioxide, the odor residual rate decreased to 3.0% within 1 hour. Clearly, the addition of diacetate and subsequent alkali saponification produced acrylic-based fiber with excellent deodorant performance.

Ultraviolet shielding properties of cotton fabric supported by cerium-calcium hydroxyapatite solid solution particles

“…In the pre-processing, such a material is kneaded into fibers when the fibers were spun, for example photocatalytic rayon fiber containing titanium oxide (TiO 2 ) 1 and deodorant acrylic fiber added TiO 2 . 2 In contrast, the functional material is supported on the surface of fibers, strings or fabrics by immersing or coating in the after-processing. The inorganic particles from nanometer to micrometer order are said to be ideal for supporting on the fabric.…”

Evaluation of the Antioxidant Activity, Deodorizing Effect, and Antibacterial Activity of ‘Porotan’ Chestnut By-Products and Establishment of a Compound Paper

“…Deodorant activity assays were performed by the modifying methods that we had previously determined [19,20,25]. The odor residual ratio was plotted against time.…”

“…The odor residual ratio was plotted against time. The odor residual ratio of the sample was calculated using Equation (1) [19,20,25].…”

Direct Electrospinning of Cellulose Acetate onto Polyurethane Sheet and Effect of Its Saponification on Mechanical Properties

“…CA was saponified with a vapor of 28% NH3 aqueous solution to produce regenerated cellulose (Takahashi et al 2013). The changes in the chemical structure of the CA fibers upon saponification were analyzed by using an ATR-FTIR.…”