Hsieh Fan-Chun, Huang Chien-Yao, Lu Yen-Pei
Department of Mechanical Engineering, National Chin-Yi University of Technology, Taichung 41170, Taiwan.
Taiwan Instrument Research Institute, National Applied Research Laboratories, Hsinchu 30076, Taiwan.
Materials (Basel). 2022 Jun 11;15(12):4159. doi: 10.3390/ma15124159.
The use of poly-(para-chloro-xylylene) (Parylene C) in microelectromechanical systems and medical devices has increased rapidly. However, little research has been conducted on the wettability and surface roughness of Parylene C after being soaked in solutions. In this study, the contact angle and surface roughness (arithmetic average of roughness) of Parylene C on three-dimensional (3D)-printed photopolymer in 10% sodium hydroxide, 10% ammonium hydroxide, and 100% phosphate-buffered saline (PBS) solutions were investigated using a commercial contact angle measurement system and laser confocal microscope, respectively. The collected data indicated that 10% ammonium hydroxide had no major effect on the contact angle of Parylene C on a substrate, with a Shore A hardness of 50. However, 10% sodium hydroxide, 10% ammonium hydroxide, and 100% PBS considerably affected the contact angle of Parylene C on a substrate with a Shore A hardness of 85. Substrates with Parylene C coating exhibited lower surface roughness than uncoated substrates. The substrates coated with Parylene C that were soaked in 10% ammonium hydroxide exhibited high surface roughness. The aforementioned results indicate that 3D-printed photopolymers coated with Parylene C can offer potential benefits when used in biocompatible devices.
聚对氯亚二甲苯基（聚对二甲苯C）在微机电系统和医疗设备中的应用迅速增加。然而，关于聚对二甲苯C浸泡在溶液后的润湿性和表面粗糙度的研究却很少。在本研究中，分别使用商用接触角测量系统和激光共聚焦显微镜，研究了聚对二甲苯C在三维（3D）打印光敏聚合物上，在10%氢氧化钠、10%氢氧化铵和100%磷酸盐缓冲盐水（PBS）溶液中的接触角和表面粗糙度（粗糙度的算术平均值）。收集的数据表明，10%氢氧化铵对聚对二甲苯C在邵氏A硬度为50的基材上的接触角没有显著影响。然而，10%氢氧化钠、10%氢氧化铵和100%PBS对聚对二甲苯C在邵氏A硬度为85的基材上的接触角有很大影响。涂有聚对二甲苯C的基材比未涂覆的基材表现出更低的表面粗糙度。浸泡在10%氢氧化铵中的涂有聚对二甲苯C的基材表现出高表面粗糙度。上述结果表明，涂有聚对二甲苯C的3D打印光敏聚合物在用于生物相容性设备时可提供潜在益处。
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