文献类型：期刊文献

英文题名：Controllable fabrication of porous PDMS via embedded 3D printing

作者：Zhang, Youchao[1,2];Shen, Jinhan[1];Zhang, Jianrui[1,2];Xu, Jinsha[3];Li, Bo[1,2]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Addit Mfg & Intelligent Equipment Res Inst, Shanghai 200237, Peoples R China;[3]Shanghai Inst Special Equipment Supervis & Inspect, Shanghai, Peoples R China

年份：2026

卷号：401

外文期刊名：SENSORS AND ACTUATORS A-PHYSICAL

收录：;EI(收录号：20261020234131);WOS:【SCI-EXPANDED(收录号:WOS:001694427200001)】；

基金：Supported by Science and Technology Program of the State Administration for Market Regulation (2023MK031) .

语种：英文

外文关键词：Porous PDMS; Embedded 3D Printing; Controllable Pore Structure; Compressive Strain Sensor

摘要：Porous polydimethylsiloxane (PDMS) exhibits broad application potential in microfluidic chips and biomedical devices, owing to its excellent elasticity, favorable gas permeability, and biocompatibility. However, traditional preparation methods are limited by coupled multi-process parameters, hindering precise control of pore size and distribution, which greatly restricts its use in high-end devices. This study presents a controllable embedded 3D printing process for porous PDMS. Controlling printing air pressure and fluid extrusion duration enables controllable aqueous medium injection into PDMS matrices and localized in-situ pore formation. Experiments show 500-3000 mu m pore size resolution; its single-layer structure enhances strain sensor performance, while multi-layer (for cushioning) reduces peak impact stress by over 30 %, improves energy dissipation by 40 %, and outperforms non-porous/single-level porous structures. This process overcomes traditional limitations, offers an efficient route for porous PDMS preparation, and facilitates large-scale application of porous elastomers in highperformance devices.