RSC Advances
·
2026
·Vol. 16
·期 20
·18270-18281
·
IF 6.1
Ruijie Zhu,Ling Ai,Zhou Zhou,Jie Gao,Yuanlong Zhong,Qi Zhang,Weijie Song
The modification of traditional self-healing elastomers is typically accompanied by a loss of both strength and self-healing efficiency, limiting their long-term reliability. Developing multifunctional polydimethylsiloxane (PDMS)-based systems capable of overcoming this trade-off is thus critical for practical sensor applications. In this work, a photothermal-responsive self-healing PDMS elastomer (PUSE) was designed by constructing an elastomeric network from PDMS and isophorone diisocyanate (IPDI), with 4, 4′-dithiobisdiphenylamine (APDS) and epoxy-functionalized 2, 4, 6, 8 -tetramethyl – 2, 4, 6, 8 – tetra [3 – (hydroxyphenylmethoxy) propyl] cyclotetrasiloxane (TEC) as chain extenders. The synergistic effect of dynamic disulfide bonds and hydrogen bonds endowed the elastomer with reversible self-healing ability, while rigid phenyl and siloxane rings enhanced mechanical robustness. The optimized PUS3E elastomer exhibited a tensile strength of 4.2 MPa, a toughness of 9.85 MJ m−3, and a resilience of 364.70%, Moreover, the self-healing efficiency reached 94.76% under UV irradiation within 24 h, surpassing 74.90% achieved at 70 °C, demonstrating the effectiveness of photo-thermal-assisted healing. The elastomer also showed hydrophobicity (water contact angle >100°) and optical transparency (T550nm = 87.5%). PUS3E was also utilized as the substrate for preparing resistive strain sensors that can accurately detect signals from the natural movements of the human body, making them highly valuable in the field of flexible sensors.
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高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·
IF 3.9
Junfeng Zheng,Chuanrong Liu,Zixue Zhao,Tianyi Zhou,Yikai Wang,Zhongde Dai
Abstract Membrane separation is an energy-efficient route for natural gas dehydration, but achieving high water permeance, H2O/CH4 selectivity, and humid-state stability remains challenging. Here, a PDMS-mediated interfacial polymerization strategy was developed to construct ultrathin cyclodextrin-derived polyester selective layers on PES supports. The PDMS interlayer sealed surface pores, regulated monomer diffusion, and enabled the formation of a continuous selective layer of approximately 70 nm. Among α-, β-, and γ-cyclodextrin membranes, the β-CD/TMC membrane showed the best performance, reaching an H2O permeance of 76,423 GPU and an H2O/CH4 selectivity of 78,602. Its superior performance results from the balanced cavity size, hydrophilic oxygen-containing groups, and low transport resistance of the cross-linked polyester layer. The membrane also maintained stable separation under highly humid conditions for 7 days, demonstrating the effectiveness of PDMS-regulated cyclodextrin polyester membranes for natural gas dehydration.
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POLYMER ENGINEERING AND SCIENCE
·
2026
·
IF 3.6
Shihao Guo,Jiang Wang,Tengfei Shao,Weijun Zhen
This study reports a sandwich-structured composite with polypyrrole (PPy)/modified polydimethylsiloxane (PDMS) outer layers and MXene/polyvinyl alcohol (PVA) intermediate layer. The PDMS matrix contains carboxylated carbon nanotubes with Fe 3 O 4 (MWCNT@Fe 3 O 4 ), liquid metal-copper alloy (LM@Cu), carbon fibers, and expanded microspheres. PPy polymerized on PDMS enhances conductivity, while MXene/PVA acts as a reflective layer. Structural, morphological analyses, and simulation confirm the uniform dispersion of fillers, successful Fe 3 O 4 and Cu modifications, and interfacial bonding within the sandwich architecture. The composite shows 2.21 Ω cm resistivity through conductive filler interactions. EMI shielding in X-band reveals 80.57 dB total shielding effectiveness, exceeding individual components (PPy/PDMS: 43.54 dB; MXene/PVA: 5.62 dB). This results from multi-phase shielding: porous PPy/PDMS enables impedance matching and wave absorption, while MXene creates internal reflection cycles. The design achieves 93% wave absorption through gradient conductivity and magnetic-electric synergy, offering a scalable approach for flexible, lightweight shielding materials. Highlights Sandwich composite achieves high EMI shielding of 80.57 dB in X-band. PDMS matrix enhanced by MWCNT@Fe 3 O 4 , LM@Cu, and expanded microspheres. In situ polymerized PPy and MXene/PVA layer enables multi-stage shielding. Innovative design yields 93% EMI absorption and low resistivity of 2.21 Ω cm. Provides a flexible, scalable EMI shielding solution for advanced electronics.
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ENGINEERING IN LIFE SCIENCES
·
2025
·Vol. 25
·期 6
·e70030
·
IF 3
Xiangyan Li,Yan Zhuang,Chang Liu,Chenlin Zhang,Chao Sang,Lankun Wang,Siyu Pang,Hanzhu Wu,Songyuan Yao,Sitong Li,Zhihao Si,Xinmiao Zhang,Peiyong Qin
Polydimethylsiloxane (PDMS) is extensively utilized for the recovery of bio-alcohols, but it encounters significant obstacles in volatile organic compounds (VOCs) removal, because of the narrow size for molecules diffusion. In this work, we designed a high-efficiency diffusion channel by introducing phenyl as a spacer into PDMS chains. The monomer divinylbenzene and vinyl-terminated PDMS (vinyl-PDMS) can be chemically crosslinked with thiol-grafted PDMS (thiol-PDMS) based on thiol-ene click reaction. The result shows that the free volume radius ( r 3 , r 4 ) has a significant increase after the introduction of divinylbenzene as a spacer, which is beneficial to the transport of phenol diffusion. After a series of optimizations involving the divinylbenzene content, pervaporation (PV) operating temperature, photoinitiator content, and viscosity of vinyl-PDMS, the prepared phenyl-PDMS showed an excellent PV performance for phenol recovery containing 10.9 of separation factor and 3959.66 g m −2 h −1 of flux as separating 0.1 wt% of phenol/water solution at 70°C. This separation performance is significantly higher than the unmodified PDMS membrane, that is, 2.05 times higher in separation factor and 3.54 times higher in flux. This study provides an effective structure design for the removal of aromatic compounds by enlarging diffusion channels and will make a great contribution to biological medicine and bioengineering.
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Materials Science & Engineering C-Materials for Biological Applications
·
2017
·
IF 4.164
Qijian Niu,Xiaolei Zhu,Yunhui Tang,Jun Nie,Guiping Ma
Different from the traditional method for fabricating core-shell structure nanofiber, the PAN/PDMS nanofibers with core-shell structure (PAN as the core layer and PDMS as the shell layer) have been illustrated, which combines with the synchronous photopolymerization during emulsion electrospinning process. The morphology and structure of as-fabricated PAN/PDMS nanofibers are characterized by SEM and TEM. The composition of PAN/PDMS nanofibers is characterized by FTIR, XPS, TG, and DTG, successfully. The photopolymerization process is characterized by UV–vis spectroscopy indirectly. The WCA tests show that it has good hydrophobicity, which makes it possible as functional material. Meanwhile, the most important thing is that the method provides a flexible design strategy of core-shell structure nanofibers.
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RSC Advances
·
2019
·Vol. 9
·期 17
·9737-9744
·
IF 3.049
Liexiang Ren,Jin Liu
A series of gas-separation polyamide-poly(dimethylsiloxane) (PA-PDMS) membranes containing PDMS groups were synthesized through the polycondensation reaction. The structural characteristics of polymers were evaluated by 1H-NMR spectroscopy (NMR), Fourier-transform infrared spectroscopy (FTIR) and UV-vis absorption spectroscopy. The permeability and selectivity behavior was studied at different temperatures (25–55 °C) and pressures (1.0–3.0 atm), using various gases, such as H2, O2, CO2, CH4, and N2. The effect of chemical structure, PDMS content, operating pressure and temperature on gas permeability was explored and discussed. Gas-permeation measurements showed that polyamides containing PDMS groups exhibited different separation performance. The PA-PDMS-20 membrane with 20 wt% PDMS exhibited the highest selectivity (CO2/N2 = 41.84 and O2/N2 = 7.01) at 35 °C and 3.0 atm while CO2 and O2 permeability was 29.29 barrer and 4.91 barrer, respectively.
研究领域:
材料科学
·
高分子科学
·
气体分离技术
·
膜技术
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Soft Matter
·
2025
·
IF 2.8
Chong Guo,Boyao Wen,Zhengyuan Luo,Bofeng Bai
The significance of multiple emulsions lies in their capacity to serve as precision carriers that simultaneously encapsulate, protect, and co-deliver actives of divergent properties, enabling critical functions including targeted delivery, sustained release, and enhanced ingredient stability.This study presents a scalable fabrication approach for preparing multiple emulsions via PDMS microfluidic devices without requiring additional fluids or surface-modified coatings. We achieve controllable modulation of wettability on PDMS chip surfaces through localized plasma treatment following partial masking. Then, we successfully prepare single, double, and triple emulsions, demonstrating the scalability of this strategy for generating complex emulsions.Subsequently, using double emulsions as a model system, we systematically investigate the flow rate conditions required for their sustained generation. Finally, to achieve precise control over emulsion droplet size, we further explore the influence of flow rate parameters for the outer phase, middle phase, and inner phase on the size of double emulsions. This foundational work lays the groundwork for future research to optimize the preparation methods for multiple emulsions and develop stimuli-responsive systems for uses such as drug delivery and food preservation.
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高影响因子
Coatings
·
2022
·Vol. 12
·期 7
·955
·
IF 3.236
Juanjuan Wang,Lele Li,Enping Liu,Xue Han,Conghua Lu
Harnessing surface wrinkle surfaces in various functional devices has been a hot topic. However, rapidly creating wrinkled surfaces on elastomers of arbitrary shape (especially curved surfaces) is still a great challenge. In this work, an ultrasonic-assisted deposition method has been proposed to achieve nanomodification of the robust layer (e.g., carbon nanotubes (CNTs)) with a labyrinth wrinkle pattern on polydimethylsiloxane (PDMS) fiber, sheet, and porous sponge. It is found that the swelling effect of the dispersion and the ultrasonic treatment play vital roles in the surface wrinkling. As a demonstration, the conductive wrinkled CNTs@PDMS fibers were assembled as stretchable strain sensors. The initial conductivity and the strain-sensing performances could be well tuned by simply adjusting the ultrasonic treatment time. The wrinkled CNTs@PDMS fiber strain sensor exhibited remarkable stretchability (ca. 300%) and good sensitivity, which can be applied in various human motion detection, voice recognition, and air-flow monitoring. It is also expected that the facile ultrasonic-assisted deposition method for surface wrinkling can be extended to fabricate various smart devices with promoted performances.
研究领域:
材料科学
·
电子工程
·
表面工程
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Journal of Central South University
·
2020
·Vol. 27
·期 11
·3202-3212
·
IF 1.249
Guo Deng-ji,Pan Xu-dong,He Hu
Conductive polymer composites (CPCs) are widely used in the flexible strain sensors due to their simple fabrication process and controllable sensing properties. However, temperature has a significance impact on the strain sensing performance of CPCs. In this paper, the strain sensing characteristics of MWCNTs/PDMS composites under temperature loading were systematically studied. It was found that the sensitivity decreased with the increase of temperature and the phenomenon of shoulder peak also decreased. Based on the theory of polymer mechanics, it was found that temperature could affect the conductive network by changing the motion degree of PDMS molecular chain, resulting in the change of sensing characteristics. Finally, a mathematical model of the resistance against loading condition (strain and temperature), associated with the force-electrical equivalent relationship of composites, was established to discuss the experimental results as well as the sensing mechanism. The results presented in this paper was believed helpful for the further application of strain sensors in different temperature conditions.
研究领域:
材料科学
·
传感器技术
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ACS Applied Polymer Materials
·
2022
·
IF 4.855
Zenghui Zhao,Sufeng Zhu,Bo Li,Chenguang Niu,Yu Tong,Ning Ma,Xufeng Dong,Baoguo Han,Hao Huang,Min Qi
It is a challenge to make artificial muscles with tunable stiffness capacities. The key is to develop a composite with tunable stiffness as well as self-healing properties and stretchability. In this work, we design a composite with amorphous TiO2 particles and poly(dimethylsiloxane) (PDMS) matrix cross-linked with metal–ligand interactions. The PDMS matrix enables the composite to have self-healing properties and excellent stretchability, while the interactions between the TiO2 particles can be enhanced by applying an electric field, which provides the composite with an electric field-controlled stiffness. The tunable storage modulus increased by 180% at 4 kV/mm. The stiffness of a simply supported beam increased by 10.8% at 6 kV with respect to that at 0 kV. Based on its tunable stiffness, self-healing properties and stretchability, this composite can mimic many functions of human muscles and has promising applications as an artificial muscle.
研究领域:
材料科学
·
生物医学工程
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MATERIALS LETTERS
·
2019
·
IF 3.019
Yinlei Lin,Deliu He,Huawen Hu,Sheng Sun,Yuhao Li,Xiaoting Liu,Guangji Li
A novel polydimethylsiloxane (PDMS)-containing hydrogel with tunable oxygen permeability was designed and prepared by the micellar copolymerization of the hydrophilic acrylamide monomer and hydrophobic PDMS-IPDI-HEMA macromonomer in aqueous media. The morphology, chemical composition and oxygen permeability (Dk) of the prepared hydrogel were investigated, and, importantly, its oxygen permeability was verified to be gradually increased with increasing the PDMS-IPDI-HEMA content. Therefore, this work opens up a new avenue to producing a class of hydrogels containing PDMS without the use of organic solvents by environmental friendly methods.
研究领域:
材料科学
·
生物医学工程
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MATERIALS LETTERS
·
2023
·
IF 3
Xiongbo Yang,Jialin Geng,Ruizhen Xu,Xinyu Tan,Meng Liu,Shijin Nie,Shumin Yao,Songshan Li,Junmei Zhang,Yiteng Tu,Giguang Qi,Yulong Qiao
Passive daytime radiative cooling (PDRC) technique is desirable for outdoor application as it can cool objects without energy consumption. In this work, a polydimethylsiloxane (PDMS) film incorporated with Kaolin particles was fabricated by a simple and low-cost method. Integrating with high sunlight reflectance and great thermal emissivity, the sample displayed a remarkable PDRC property by yielding an average temperature drop of 12.8℃ compared to the sub-ambient temperature. Additionally, the superhydrophobicity of the sample enabled the surface of the sample free-contamination after water rinse. The superhydrophobic properties can be maintained even after 60 days of UV light continuous exposure.
研究领域:
材料科学
·
能源工程
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危险品化学品经营许可证（带存储）