期刊
NANO LETTERS
卷 20, 期 9, 页码 6420-6428出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.0c01990
关键词
electrospun; nanofibers; ice inspired surface; stiierlubricated; antiadhesive
类别
资金
- National Natural Science Foundation of China [51675296, 51873107]
- National Key Research and Development Program of China [2018YFC1106204]
- Tsinghua University Initiative Scientific Research Program [20197050026]
- Tsinghua University-Peking Union Medical College Hospital Initiative Scientific Research Program [20191080593]
- Shanghai Municipal Education Commission Gaofeng Clinical Medicine Grant Support [20171906]
- Shanghai Jiao Tong University Medical and Research Program [ZH2018ZDA04]
- Science and Technology Commission of Shanghai Municipality [18ZR1434200, 19440760400]
- Foshan-Tsinghua Innovation Special Fund (FTISF)
- Research Fund of State Key Laboratory of Tribology, Tsinghua University, China [SKLT2020C11]
- Ng Teng Fong Charitable Foundation [202-276-132-13]
Inspired by the superlubricated surface (SLS) of ice, which consists of an ultrathin and contiguous layer of surface bound water, we built a SLS on the polycaprolactone (PCL)/poly(2-methacryloxyethylphosphorylcholine) (PMPC) composite nanofibrous membrane via electrospinning under controlled relative humidity (RH). The zwitterionic PMPC on the nartofiber provided a surface layer of bound water, thus generating a hydration lubrication surface. Prepared under 20% RH, electrospun PCL/PMPC nanofibers reached a minimum coefficient of friction (COF) of about 0.12 when the weight ratio of PMPC to PCL was 0.1.At a higher RH, a SLS with an ultralow COF of less than 0.05 was formed on the composite nanofibers. The high stability of the SLS hydration layer on the engineered nanofibrotTs membrane effectively inhibited fibroblast adhesion and markedly reduced tissue adhesion during tendon repair in vivo. This work demonstrates the great potential of this ice -inspired SLS approach in sue adhesion-prevention applications.
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