摘要
具有湿度管理和抑菌性能的功能织物可以有效提高穿着舒适度。现有方法往往通过在亲水织物表面物理浸涂抗菌剂,虽然可起到短效抑菌作用,但会导致抗菌剂大量突释,引起皮肤不适,抗菌能力快速减弱。本文利用静电纺丝方法制备了一种掺杂可见光激发抗菌光敏剂的自泵织物(Self-pumping textile,SPT),实现了汗液的单向移除同时高效抗菌。自泵织物由疏水的聚偏二氟乙烯-六氟丙烯(PVDF-HFP)纤维和亲水的碱水解醋酸纤维素(CA)纤维组成,其中亲水纤维中掺杂了具有高活性氧产生能力的聚噻吩(PT2)光敏剂。在接触角导液模型中,我们证实了导液时间随疏水层厚度增加而延长,当疏水层电纺时间为60 s时,水分可以在10 s内从疏水层单向导出到亲水层。使用功率为25 mW/cm^(2)的氙灯光模拟日常太阳光进行抗菌,结果表明,10 min可以杀灭95%以上的金黄色葡萄球菌和大肠杆菌。本工作为功能性织物的设计提供了一种新的思路。
Multi-functional textiles with directional moisture management and antibacterial capabilities have the potential to enhance wearer comfort.Existing methods usually physically dip the antibacterial agents onto the surface of hydrophilic textile,which can play a short-term antibacterial effect,but will lead to a large number of burst release of antibacterial agents,cause skin discomfort,and quickly weaken the antibacterial ability.In this study,a photosensitizer-doped self-pumping textile was prepared by electrospinning for directional sweat removal and antibacterial.Specifically,the self-pumping fabric consists of a hydrophobic polyvinylidene-hexafluoropropylene fiber and a hydrophilic alkali hydrolyzed cellulose acetate(CA)fiber.Besides,the polythiophene photosensitizer with high reactive oxygen species production capacity was doped into hydrophilic fiber enabling daylight antibacterial activity.In the contact angle conductance liquid transport model,we confirmed that the liquid transport time increases with the thickness of the hydrophobic,and when the electrospinning time for the hydrophobic layer was 60 s,water could permeate through it to hydrophilic layer in a unidirectional manner within 10 s.Furthermore,antibacterial experiments demonstrated that over 95%of S.aureus and E.coli were eradicated within 10 minutes under xenon lamp irradiation simulating natural light power(25 mW/cm^(2)).This work presented a novel approach for designing functional fabrics.
作者
王健
时连鑫
葛介超
WANG Jian;SHI Lianxin;GE Jiechao(Key Laboratory of Photochemical Conversion and Optoelectronic Materials,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China;School of Future Technology,University of Chinese Academy of Sciences,Beijing 100049,China;CAS Key Laboratory of Bio-inspired Materials and Interfacial Science Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China)
出处
《发光学报》
EI
CAS
CSCD
北大核心
2024年第5期853-860,共8页
Chinese Journal of Luminescence
基金
国家自然科学基金(52272052,2022027)。
关键词
自泵织物
单向导湿
可见光抗菌
光动力
self-pumping textile
directional moisture transport
day-light antibacterial
photodynamic
