文献类型：期刊文献

英文题名：Multifunctional conductive porous substrate based on DLP 3D printing and polymerization-induced phase separation

作者：Zhang, Tao[2];Wang, Wei[2];Zhang, Xun[2];Zhang, Siqi[2];Wang, Lizhi[2];Yu, Dan[2];Wang, Yu[1]

机构：[1]Shaoxing Univ, Key Lab Clean Dyeing & Finishing Technol Zhejiang, Shaoxing Key Lab High Performance Fiber & Prod, Shaoxing 312000, Peoples R China;[2]Donghua Univ, Coll Chem & Chem Engn, Minist Educ, Shanghai 201620, Peoples R China

年份：2025

卷号：519

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：SCI-EXPANDED(收录号：WOS:001521249000005)、、EI(收录号：20252518650834)、Scopus(收录号：2-s2.0-105008500214)、WOS

基金：The research was supported by the National Natural Science Foun-dation of China (Grant No. 52403071) and Zhejiang Provincial Natural Science Foundation (Grant No. LQ23E030007) .

语种：英文

外文关键词：3D printing; Multifunctional composites; Phase separation; CMWCNTs

外文摘要：Digital Light Processing (DLP) 3D printing technology is gradually changing the traditional manufacturing mode with its unique advantages of high precision, speed and customizability, but challenges persist in printing carbon-based materials due to their incompatibility with resins and light absorption characteristics. This study herein presents a conductive porous polymer substrate fabricated by DLP 3D printing based on click chemistry polymerization-induced phase separation technique. By mixing carboxylated multi-walled carbon nanotubes (CMWCNTs) into a thiol-ene click chemistry system of polyethylene glycol diacrylate (PEGDA) and pentaerythritol tetra(3-mercapto-propionate) (PETMP), a dual-scale porous structure was realized by a rapid one-step preparation via 3D printing. The optimized ink formulation enables the material to have high conversion rate and fast curing capability. The collaborative effect of CMWCNTs, microscopic pores generated by phase separation, and macroscopic structures created through 3D printing endows the material with multifunctional properties. Electromagnetic interference (EMI) shielding tests show absorption-dominated shielding performance with a maximum absorption coefficient of up to 0.74, and total EMI SE (SET) fluctuates between 24.3 and 31.8 dB. Solar-driven water evaporation experiments show that it reaches an evaporation rate of 2.242 kg m- 2 h- 1 with an efficiency of 92.8%, and can be applied to purify seawater and heavy metal wastewater, achieving an ion removal rate of over 99.5%. In addition, the porous polymer exhibits excellent piezoresistive sensing performance with a sensitivity of -0.0355 kPa- 1, monitoring range of 0-130 kPa, and stable cycling durability. This work paves the way for novel preparation of custom-designed multifunctional materials in EMI shielding, water purification, and flexible electronics fields.