Chem. J. Chinese Universities ›› 2025, Vol. 46 ›› Issue (7): 20240566.doi: 10.7503/cjcu20240566

• Polymer Chemistry • Previous Articles     Next Articles

Surface Modification of PMMA and Polyester Materials by One-pot Method and Anti-biofouling Performance Evaluation of the Coatings

ZHAO Ying1,2, DONG Jicheng1,2, FANG Yuan1,2, ZHANG Lijun3,4(), JIN Lin3,4, LIU Bo1,2, CHENG Fang1,2()   

  1. 1.Department of Pharmaceutical Engineering,School of Chemical Engineering
    2.State Key Laboratory of Fine Chemicals
    3.Faculty of Medicine,Dalian University of Technology,Dalian 116024,China
    4.Dalian Third People’s Hospital,Dalian 116033,China
  • Received:2024-12-23 Online:2025-07-10 Published:2025-04-01
  • Contact: ZHANG Lijun, CHENG Fang E-mail:lijunzhangw@sina.com;ffcheng@dlut.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(82171032);the Applied Basic Research Program of Liaoning Province, China(2022JH2/101300036);the Dalian Third People’s Hospital Research Program, China(2022ky001)

Abstract:

A generalized method for surface modification of poly(methyl methacrylate)(PMMA) and polyester materials has been reported to prepare broad-spectrum and subsequently reactive coatings, which have anti-protein and anti-bacterial properties. The method also overcomes the common limitation of surface modification by introducing specific groups. The zwitterionic monomer(sulfobetaine methacrylate, SBMA) was polymerized on PMMA by one-pot method and two-step method, respectively. The elemental analysis results showed that the PMMA-SBMA modified coating prepared by one-pot method had the highest SBMA content, so the one-pot method was selected for follow-up study. At the same time, the optimized modification method was verified to be broad-spectrum on the surface of other polyester materials including polybutylene terephthalate(PBT), polycarbonate(PC), poly(1,4- cyclohexanedicarbinol) terephthalate(PCT) and polyethylene terephthalate(PET). Ellman’s assay showed that vinyl sulfone groups were still present on the PMMA-SBMA’s surface of the modified coating, indicating that the coating had sustainable subsequent reactivity. The anti-biological scale experiment of the PMMA-SBMA modified coating was carried out. The anti-BSA adsorption capacity of the coating was evaluated by quartz electronic microbalance(QCM), and the results showed that the one-pot coating significantly reduced the non-specific adsorption of protein by 72.3%. For Bacillus cereus, Escherichia coli and Staphylococcus aureus, the bacterial adhesion area of the static coating was reduced by more than 80%. The results of flow pool and flow field calculation showed that the bacterial adhesion ability can be resisted under the flow conditions of two shear forces(0.16 and 1.6 dynes/cm2).

Key words: One-pot method, Zwitterion, Anti-bacterial adhesion, Flow condition, Shear force

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