期刊
ACS APPLIED MATERIALS & INTERFACES
卷 10, 期 26, 页码 22866-22875出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b07393
关键词
electrospinning; colored nanofibers; cellulose acetate; directional moisture transport; moisture management testing
资金
- Fundamental Research Funds for the Central Universities [2232016A3-03]
- Shanghai Rising-Star Program [16QA1400200]
- Shanghai Committee of Science and Technology [1SJC1400500]
- Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning [TP2016019]
- National Key RAMP
- D Program of China [2016YFB0303200]
- National Natural Science Foundation of China [51503028, 51673037]
Textiles with excellent moisture transport characteristics play key role in regulating comfort of the body, and use of color in textiles helps in developing aesthetically pleasing apparels. Herein, we report an aesthetically pleasing and breathable dual-layer cellulose acetate (CA) based nanofibrous membranes with exceptional directional moisture transport performance. The outer layer was synthesized by subjecting CA nanofibers to hydrolysis and reactive dyeing processes, which converted moderately hydrophobic CA nanofibers into uniformly colored superhydrophilic CA nanofibers with an excellent wettability. In addition to excellent wettability and superhydrophilic nature, dyed CA (DCA) nanofibers also offered high color yield and dye fixation as well as considerable colorfastness performance against washing and light, thus, were used as the outer layer. However, pristine CA nanofibers were chosen as the inner layer for their moderate hydrophobicity. The subsequent CA/DCA nanofiber membrane produced a high wettability gradient, which facilitated directional moisture transport from CA to DCA layers. The resultant dual-layer nanofiber membranes offered a high color yield of 16.33 with similar to 82% dye fixation, excellent accumulative one-way transport capacity (919%), remarkable overall moisture management capacity (0.89), and reasonably high water vapor transport rate (12.11 kg d(-1) m(-2)), suggesting them to be a potential substrate for fast sweat-release applications.
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