Polydimethylsiloxane Fluidic Device with Polydopamine‐Coated Inner Channel for Production of Uniform Droplets
Polydimethylsiloxane Fluidic Device with Polydopamine‐Coated Inner Channel for Production of Uniform Droplets
复制标题
具有聚多巴胺涂层内部通道的聚二甲基硅氧烷流体装置，用于生产均匀液滴
DOI：
10.1002/mame.201600176
复制
发表时间：
2016
影响因子：
3.9
通讯作者：
Sung‐Wook Choi
中科院分区：
文献类型：
--
作者：
Dae;Yu;R. Kang;Sung‐Wook Choi
采用快速成型方法制造了具有两个流道的基于聚二甲基硅氧烷（PDMS）的流体装置。基于 PDMS 的流体装置由于其固有的疏水性而用于产生油包水乳液 (W/O) 液滴。为了产生均匀的水包油（O/W）乳液液滴，通过使多巴胺前体在流体装置的水通道中流动，PDMS流体装置的内部通道被聚多巴胺（PDA）涂覆。 PDA 涂层通过形态粗糙度和氮含量的增加得到证实。此外，PDMS表面的接触角在PDA涂层过程中从95°减小到30°，表明流体装置的内表面是亲水的。均匀的 W/O 和 O/W 乳液液滴分别由原始 PDMS 和 PDA 涂层 PDMS 流体装置产生。
A polydimethylsiloxane (PDMS)-based fluidic device with two flow channels is fabricated by using a rapid prototyping method. The PDMS-based fluidic device is used to produce water-in-oil emulsion (W/O) droplets due to its intrinsic hydrophobicity. To produce uniform oil-in-water (O/W) emulsion droplets, the inner channel of the PDMS fluidic device is coated with polydopamine (PDA) by flowing a dopamine precursor in the water channel of the fluidic device. The PDA coating is confirmed by an increase in morphological roughness and nitrogen content. In addition, the contact angle of the PDMS surface decreases from 95° to 30° during PDA coating, suggesting that the inner surface of the fluidic device is hydrophilic. Uniform W/O and O/W emulsion droplets are produced by the pristine PDMS and PDA-coated PDMS fluidic devices, respectively.