Polycarbonate Surface Modification via Aqueous SI-PET-RAFT
Polycarbonate Surface Modification via Aqueous SI-PET-RAFT
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DOI：
10.1021/acs.macromol.2c00714
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发表时间：
2022-06-10
期刊：
影响因子：
5.5
通讯作者：
Pester, Christian W.
中科院分区：
文献类型：
--
作者：
Fromel, Michele;Pester, Christian W.
聚碳酸酯 (PC) 因其重量轻、光学透明度、机械强度和温度稳定性而成为一种流行的消费塑料。尽管无毒且具有生物相容性，但其固有的疏水性限制了其在需要亲水性或在体内使用的应用中的潜力。这项工作提出了一种使用超亲水聚合物刷对 PC 表面进行化学改性的简便方法。开发了一种将可逆加成断裂链转移 (RAFT) 试剂固定在 PC 基底上的方法。由这些 PC 系留的 RAFT 引发剂，亲水性聚合物刷在水性条件、可见光和环境大气下生长。通过连续生长或顺序延伸，所得薄膜可将 PC 表面水接触角 (θ) 降低至 θ < 10 度（超亲水）。这项工作将 PC 的使用范围从防雾镜片扩展到耐用的生物设备，使科学家和工程师能够利用 PC 的许多有吸引力的物理特性，而不受疏水性的限制。
Polycarbonate (PC) is a popular consumer plastic due to its light weight, optical clarity, mechanical strength, and temperature stability. Though nontoxic and biocompatible, its inherent hydrophobicity limits its potential in applications that require hydrophilicity or use in the body. This work presents a facile method to chemically modify PC surfaces with super-hydrophilic polymer brushes. A method is developed to immobilize reversible addition-fragmentation chain transfer (RAFT) agents on PC substrates. From these PC-tethered RAFT initiators, hydrophilic polymer brushes are grown under aqueous conditions, visible light, and ambient atmosphere. The resulting films decrease PC surface water contact angles (theta) to as low as theta < 10 degrees (superhydrophilic) by continuous growth or sequential extension. This work expands the realm of possibility for uses of PC from anti-fogging lenses to durable biological devices, allowing scientists and engineers to take advantage of the many attractive physical properties of PC without limitations of hydrophobicity.