纺织学报 ›› 2020, Vol. 41 ›› Issue (05): 1-7.doi: 10.13475/j.fzxb.20190407407

• 纤维材料 •    下一篇

竹红菌素-聚(甲基丙烯酸甲酯-co-甲基丙烯酸)纳米纤维的制备及其光敏抗菌性能

王婷婷1, 刘梁1, 曹秀明2, 王清清1,2()   

  1. 1.生态纺织教育部重点实验室(江南大学), 江苏 无锡 214122
    2.江苏阳光股份有限公司, 江苏 无锡 214400
  • 收稿日期:2019-04-28 修回日期:2020-02-03 出版日期:2020-05-15 发布日期:2020-06-02
  • 通讯作者: 王清清
  • 作者简介:王婷婷(1997—),女,硕士生。主要研究方向为功能纳米纤维材料。
  • 基金资助:
    国家自然科学基金青年基金项目(51603090);中国博士后科学基金项目(2018M630516);江苏省政策引导类计划(国际科技合作)项目(BZ2018032)

Preparation and photodynamic antimicrobial properties of hypocrellinpoly(methyl methacrylate-co-methacrylic acid) nanofibers

WANG Tingting1, LIU Liang1, CAO Xiuming2, WANG Qingqing1,2()   

  1. 1. Key Laboratory of Eco-Textiles (Jiangnan University), Ministry of Education, Wuxi, Jiangsu 214122, China
    2. Jiangsu Sunshine Co., Ltd., Wuxi, Jiangsu 214400, China
  • Received:2019-04-28 Revised:2020-02-03 Online:2020-05-15 Published:2020-06-02
  • Contact: WANG Qingqing

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摘要：

针对抗生素类药物在耐药性菌株处理中应用的局限性,在聚(甲基丙烯酸甲酯-co-甲基丙烯酸)纺丝液中添加光敏剂竹红菌素,采用静电纺丝法制备具有光动力广谱抗菌功能的纳米纤维膜。借助扫描电子显微镜、静态接触角测试、傅里叶变换红外光谱仪和热重分析仪等分析添加竹红菌素前后纳米纤维的形貌、润湿性能、化学结构和热稳定性,并研究了添加竹红菌素的纳米纤维膜对金黄色葡萄球菌和大肠杆菌的抗菌能力。结果表明:添加竹红菌素后纳米纤维直径变粗,静态接触角增加约20°,润湿性能下降,热稳定性略有降低;纤维膜在可见光下具有良好的光动力氧化性能,在光照下对金黄色葡萄球菌和大肠杆菌的抑菌率分别达99.97%和54.41%。

关键词: 竹红菌素, 聚(甲基丙烯酸甲酯-co-甲基丙烯酸), 纳米纤维, 静电纺丝, 光动力抗菌性能

Abstract:

To overcome the limitation of antibiotic drugs in the treatment of drug resistant strains, photosensitizer hypocrellin(Hc)was added to the poly(methyl methacrylate-co-methacrylic acid) electrospinning solution to prepare the photodynamic broad-spectrum antibacterial nanofibrous membrane. The overall morphology, wettability, chemical structure and thermostability of the nanofibers before and after the addition of Hc were compared by scanning electron microscopy, static contact angle test, Fourier transform infrared spectrometry and thermogravimetric analysis, and the antibacterial ability to S. aureus and E. coli were also investigated. The results show that the addition of Hc causes increase in the diameter of nanofibers, increases its static contact angle by approximately 20° and decreases its wettability, slightly decreases its thermostability, and imparts good substrate oxidation under visible light. The antibacterial effect against S. aureus and E. coli reached 99.97% and 54.41% under light conditions, respectively.

Key words: hypocrellin, poly(methyl methacrylate-co-methacrylic acid), nanofiber, electrospinning, photodynamic antibacterial property

中图分类号: 

  • TQ342

图1

不同Hc质量分数的纳米纤维膜的SEM照片(×5 000)"

表1

PM和Hc-PM纳米纤维膜的直径分布"

Hc质量分数/% 平均直径/nm 直径标准差/nm 接触角/(°)
0.0 337.25 123.44 109.2
0.1 358.20 146.28 129.2
0.3 398.20 86.83 127.3
0.5 500.61 182.98 131.4

图2

竹红菌素溶液和纳米纤维膜的紫外光谱图"

图3

PM和Hc-PM纳米纤维膜的红外光谱图"

图4

PM和Hc-PM膜的热稳定性曲线"

图5

光照Hc-PM膜与TEMP生成的TEMPO的EPR信号"

图6

Hc-PM纳米纤维膜的KI溶液紫外吸收光谱"

图7

PM和Hc-PM膜在351 nm处的KI溶液紫外吸收图"

图8

不同质量分数Hc-PM膜在351 nm处KI溶液紫外吸收曲线"

表2

PM和Hc-PM膜对金黄色葡萄球菌及大肠杆菌的抗菌效果"

Hc质量分数/% 暗室抑菌率/% 光照抑菌率/%
金黄色葡萄球菌 大肠杆菌 金黄色葡萄球菌 大肠杆菌
0.0 4.12±0.19 5.74±1.54 9.28±0.37 11.48±1.94
0.5 0.90±0.05 10.29±1.53 99.97±0.03 54.41±16.72
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