Effect of thermal treatment on the chemical resistance of polydimethylsiloxane for microfluidic devices
Effect of thermal treatment on the chemical resistance of polydimethylsiloxane for microfluidic devices
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DOI：
10.1088/0960-1317/23/3/035007
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发表时间：
2013-03-01
影响因子：
2.3
通讯作者：
Cho, Hyoung J.
中科院分区：
文献类型：
--
作者：
Lee, Jihoon;Kim, Jungwoo;Cho, Hyoung J.
我们研究了热处理聚二甲基硅氧烷 (PDMS) 在耐化学腐蚀微通道中的用途。当PDMS在300摄氏度下进行热处理时，膨胀减少，并且PDMS微流体通道的表面在二氯甲烷等提取介质中具有良好的耐受性。此外，尽管热处理后尺寸略有减小，但通道形状和透明度均保持不变，没有出现流体泄漏。与未经处理的 PDMS 相比，热处理过的 PDMS 具有更多的亲水性。这项工作中描述的单步后铸造工艺不需要复杂的化学处理或向主体 PDMS 基底引入异物，从而扩大了基于 PDMS 的微流体的应用领域。
We investigated the use of thermally treated polydimethylsiloxane (PDMS) for chemically-resistant microchannels. When the PDMS underwent the thermal treatment at 300 degrees C, swelling was reduced and the surface of the PDMS microfluidic channel endured well in the extracting media such as dichloromethane. Furthermore, despite the small decrease in size after thermal treatment, both the channel shape and transparency were maintained without showing fluid leakage. The thermally treated PDMS had more hydrophilic properties compared to the untreated PDMS. A single step post-casting process described in this work does not require complex chemical treatments or introduction of foreign materials to the host PDMS substrate, thus expanding the application area of PDMS-based microfluidics.