以贝为灵感的基于聚合物的涂层技术,具有抗和抗菌性能
Adel S Imbia1, Artjima Ounkaew1, Xiaohui Mao1
1Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada.
Langmuir : the ACS journal of surfaces and colloids
|May 16, 2024
概括
这项研究开发了用于防涂料的zwiterionic和cationic共聚合物. 在聚多巴胺表面上植入,这些涂料具有抗菌和抗的特性,提高生物医学设备的安全性.
科学领域:
- 材料科学 材料科学 材料科学
- 生物医学工程 生物医学工程
- 聚合物化学 聚合物化学
背景情况:
- 生物污染和细菌粘附是生物医学设备面临的重大挑战.
- 传统的防策略通常依赖于有毒的生物制剂,带来风险.
- 兹维特和聚合物为无毒表面修饰提供了有希望的替代品.
研究的目的:
- 开发一种简单的方法,用于制造双离子和离子共聚合物涂层.
- 将这些共聚合物移植到聚多巴胺涂层表面,以增强抗和抗菌性能.
- 评估修改表面的疗效和生物相容性.
主要方法:
- 利用可逆添加-碎片化链转移 (RAFT) 聚合来合成zwitterionic (MPC) 和cationic (META) 共聚物与4-formyl phenyl methacrylate (FPMA).
- 在聚多巴胺 (PDA) 涂层表面的氨基基组上对合成的共聚物 (MPF和MTF) 进行共接种.
- 评估了对*S. aureus*和*E. coli*的抗菌活性,对牛血清白蛋白的抗菌性能,以及MRC-5细胞的细胞活力.
主要成果:
- 涂有PDA/MPF/MTF的表面表现出显著的抗菌功效,可以对抗阳性 (*S. aureus*) 和阴性 (*E. coli*) 细菌.
- 经过修改的表面表现出出色的抗物特性,有效地防止了蛋白质的粘附.
- 涂层表面保持了正常人肺纤维细胞 (MRC-5) 的高活力,表明良好的生物相容性.
结论:
- 使用zwitterionic和cationic共聚合物的简易表面修饰策略提供了有效的抗菌和抗污染特性.
- 这种方法避免有毒的生物制品,使其非常适合生物医学设备应用.
- 开发的涂料显示了在医疗器械制造中广泛应用的潜力.
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