JOURNAL OF APPLIED POLYMER SCIENCE
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2015
·Vol. 132
·期 34
·
IF 1.768
Xiangyan Liu,Deng Hu,Meng Li,Jianming Zhang,Zhigao Zhu,Gaofeng Zeng,Yanfeng Zhang,Yuhan Sun
To improve the pervaporation performance of Silicalite-1/PDMS composite membrane by adding a small amount of Silicalite-1 zeolite, novel Silicalite-1/PDMS surface sieving membranes (SSMs) were prepared by attaching Silicalite-1 particles on the PDMS membrane surface. The obtained membranes and traditional mixed-matrix membranes (MMMs) were characterized by SEM, XRD, TGA, FT-IR, and pervaporation separation of ethanol–water mixture. Effects of Silicalite-1 particles content, feed temperatures, and feed compositions on the separation performance were discussed. From the cross-section view SEM images of SSMs, a two-layer structure was observed. The thickness of the Silicalite-1 layer was about 300 nm to 2 μm. The TGA analysis indicates that the zeolite concentration in 3 wt % SSM is lower than 10 wt % MMMs. In the ethanol/water pervaporation experiment, the separation factor of Silicalite-1/PDMS SSMs increased considerably compared with pure PDMS membrane. When the suspensions concentrations of Silicalite-1 particles reached 3 wt %, the separation factor was about 217% increase over pure PDMS membrane and 52.9% increase over 10 wt % Silicalite-1/PDMS MMMs. As the ethanol concentration in the feed increases, the separation factor of SSMs increases, whereas permeation flux decreases. At the same time, with increasing operating temperature, the permeation flux of SSMs increased. The stability of SSMs at high temperature is better than the traditional MMMs. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 42460.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Hanchen Ye,Dongyun Chen,Najun Li,Qingfeng Xu,Hua Li,Jinghui He,Jianmei Lu
The discharge of large amounts of sewage has caused enormous damage to the environment and human health. There is an urgent need for efficient and environmentally friendly materials to deal with such troubles. Materials with emulsion separation have attracted everyone’s attention. In this study, zeolitic imidazolate framework (ZIF)-8- and Co-polydimethylsiloxane (PDMS)-modified multiwalled carbon nanotube films were fabricated. First, the surface of the nanotube films was modified with ZIF-8 by in situ growth, and then a Co-PDMS layer was added by dip coating. The membrane has excellent wettability, and it is superhydrophobic and superoleophilic in air. The separation efficiency of water-in-oil emulsions reaches more than 99.9%, and it has an outstanding separation ability for corrosive emulsions. Moreover, the membrane has an excellent self-healing ability, and it can rapidly heal at normal temperature after being damaged. This makes the film more suitable for practical oily wastewater treatment. We performed related research and propose a possible self-healing mechanism.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Qin Liu,Xin Liu,Bo Wu,Changge Wang,Tiantian Li,Wancheng Li,Yun Huang,Yao Li,Haiyang Yan,Chuanrun Li
This study harnessed polydimethylsiloxane (PDMS)-coated polytetrafluoroethylene (PTFE) composite (PDMS/PTFE) membranes for the separation of peppermint aromatic water in vapor state. The effects of the PDMS coatings’ morphology structure on the separation performance of the membrane were investigated. The vapor permeation process, selective-permeation mechanism, and membrane stability were explored. Results showed that the separation effect of the membranes depended on the degree of polymerization of PDMS coating. Almost no water molecules can pass through the membrane during the 6 h separation process, and the separation factor was as high as 668. The main pharmacodynamic components in the separated permeate were L-menthol, L-menthone, and menthyl acetate, accounting for 49.16 %, 26.3 %, and 5.46 %, respectively, which conformed to the standard of the European Pharmacopoeia . The parameters of membrane separation showed that the maximum permeability coefficients of L-menthol, L-menthone, menthyl acetate, and water were 40.80, 20.28, 4.211, and 0.3945, respectively, at 105 °C and 65 kPa. This finding indicated that the large difference in permeability coefficient was the key to the excellent selectivity of the PDMS/PTFE membrane for separating volatile pharmaceutical components and water molecules in the peppermint aromatic-water system.
研究领域:
材料科学
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药学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2020
·Vol. 8
·期 6
·3509-3516
·
IF 11.301
Peng Wang,Weidong Wei,Ziqiang Li,Wei Duan,Huilong Han,Qing Xie
To endow strain sensors with superhydrophobicity may be a promising approach to improve the infrastructure safety in harsh environments. Artificial superhydrophobic strain sensors have exhibited good mechanical robustness and chemical resistance separately. However, a simultaneous demonstration of these characteristics along with superior liquid impalement resistance is still a big challenge. Here, we developed a strain sensor by combining fluorinated PDMS with multi-walled carbon nanotubes (MWCNTs). The key innovation in this research is achieving a multi-fluorination strategy on the PDMS matrix, which enhances the liquid impalement resistance without sacrificing mechanical robustness. Therefore, our strain sensors not only demonstrated superior sensitivity and excellent reproducibility, but also maintained superhydrophobicity after various kinds of destruction (such as toleration of strain up to 200%, man-made destruction using hands or sandpaper, chemical attack, 200 °C thermal attack and high-speed drop/turbulent jet impacts).
研究领域:
材料科学
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传感器技术
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
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2022
·
IF 6.206
Yuan Wang,Liwei Yan,Youquan Ling,Ying Ge,Congshu Huang,Shengtai Zhou,Shuang Xia,Mei Liang,Huawei Zou
A uniformly dispersed epoxy/polydimethylsiloxane (PDMS) hybrid system was prepared through hydrosilylation and in-situ polymerization reaction. The obtained epoxy/PDMS coating possessed enhanced mechanical and adhesive properties. The hybrid structure of epoxy/PDMS was confirmed by FTIR, 1 H NMR, GPC and SEM, respectively. Results indicated that the tensile strength , elongation at break and shear strength of the epoxy-containing polydimethylsiloxane (EPS) modified PDMS (EPS-PDMS) were increased by 187 %, 185 % and 137 %, respectively, when compared to the pure PDMS. Besides, TGA analysis indicated that the initial degradation temperature of EPS-PDMS was well maintained when compared to that of pure PDMS. Therefore, the convenient strategy of in-situ formation of epoxy reinforcing phase with flexible long-chain siloxane into PDMS effectively integrated the advantages of two incompatible polymers. The prepared EPS-PDMS coatings with enhanced mechanical and adhesive properties show great potential applications in the aerospace and industrial fields as flexible thermal protection coatings.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Electronic Materials
·
2024
·
IF 4.3
Qiaoqiao Bai,Xin Liu,Xiaohu Shi,Ziwei Wang,Ziyi Wu,Qizhi Dong,Nan Liu,Tang Liu,Song Liu
With the rapid development of technologies, such as the Internet of Things and artificial intelligence, the flexible electronic skin (e-skin) that bridges the material and the physical world presents vast market potential. However, the development of cost-effective, multifunctional e-skin remains a formidable challenge. Herein, a dual-functional e-skin based on a microspinous MXene/PDMS composite film is prepared by using a low-cost natural template method. The e-skin has good performance, making it suitable for detecting small pressures and joint movements as well as high-quality electromyogram and electrocardiogram signals. The e-skin can monitor a variety of human motions and electrophysiological signals, positioning it as a promising tool in the areas of motion detection and health monitoring.
研究领域:
材料科学
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生物医学工程
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柔性电子
✓ 已验证
产品关联
DOI
高影响因子
POLYMER
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2021
·
IF 4.43
Yuan Wang,Yuanbo Cai,Hao Zhang,Ji Zhou,Shengtai Zhou,Yang Chen,Mei Liang,Huawei Zou
In this study, the high-performance PDMS elastomer was successfully prepared by constructing epoxy/silicone hybrid network through hydrosilylation and epoxide-opening reaction. The tensile strength , elongation at break and shear strength of the prepared hybrid material were increased by 200.0%, 59.6%, 140.6% respectively when compared with the pure PDMS. The thermal residual weight of the hybrid material at 800 °C in N 2 was kept at 56.9%. The thermal degradation mechanism of hybrid material was investigated through TG-IR analysis. Friedman technique was used to compute the kinetic parameters of degradation reaction. Meanwhile, the composition and structure of residual char of hybrid material after thermal degradation at 800 °C was systematically characterized. Results indicated that the high-performance PDMS elastomer with excellent thermal and mechanical properties was expected to be applied in many prospects such as thermal protective coating, high temperature resistant adhesive and ablative material matrix.
研究领域:
材料科学
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高分子化学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
·
IF 9
Huanhuan Dong,Xiaoyu Ji,Zhao Li,Junxiang Guo,Shan Peng
Viscous oil spills (e.g., petroleum and diesel) in marine environments and domestic oily wastewater pose seriously ecological and public health risks owing to their high viscosity and poor fluidity, making the remediation a very urgent challenge. To address these issues, we designed an inherently hydrophobic MXene/hollow CuCo-MOF (H-CuCo-MOF)@PDMS sponge featuring an instantly photothermal response and a multiscale wrinkled structure. The confined effects of H-CuCo-MOF and MXene synergistically generate an efficient electron transport network, where interfacial charge transfer enhances carrier lifetime, thereby prolonging photothermal conversion efficiency. In Addition, the high specific surface area of H-CuCo-MOF and the layered structure of MXene increase confined adsorption sites while preventing MOF aggregation. Stress mismatch between flexible PDMS and rigid MXene form a highly wrinkled architecture, effectively mitigating MXene stacking. Under 1-sun irradiation, the sponge’s surface temperature quickly reaches ∼80 °C within 20 s, altering surface tension and inducing the Marangoni effect to accelerate oil absorption. Moreover, taking advantages of high match between the coated sponge and the viscous oil, the separation efficiencies are exceeding 95 % for diesel oil and rapeseed oil, and 82.7 % for crude oil. The material also proves superior durability, maintaining stable hydrophobicity after 150 friction cycles, exceptional mechanical recovery (99.2 % after 10 compressions), and notable salt resistance and antibacterial properties.
研究领域:
环境科学
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材料工程
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纳米技术
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Scientific Reports
·
2016
·Vol. 6
·期 1
·1-11
·
IF 5.228
Jiao Jiajia,Sun Lili,Guo Zaiyu,Hou Sen,Holyst Robert,Lu Yun,Feng Xizeng
Polydimethylsiloxane (PDMS) is widely used as a cell culture platform to produce micro- and nano-technology based microdevices. However, the native PDMS surface is not suitable for cell adhesion and is always subject to bacterial pollution and cancer cell invasion. Coating the PDMS surface with antibacterial or anticancer materials often causes considerable harm to the non-cancer mammalian cells on it. We have developed a method to fabricate a biocompatible PDMS surface which not only promotes non-cancer mammalian cell growth but also has antibacterial and anticancer activities, by coating the PDMS surface with a Chinese herb extract, paeonol. Coating changes the wettability and the elemental composition of the PDMS surface. Molecular dynamic simulation indicates that the absorption of paeonol onto the PDMS surface is an energy favourable process. The paeonol-coated PDMS surface exhibits good antibacterial activity against both Gram-positive and Gram-negative bacteria. Moreover considerable antibacterial activity is maintained after the coated surface is rinsed or incubated in water. The coated PDMS surface inhibits bacterial growth on the contact surface and promotes non-cancer mammalian cell growth with low cell toxicity; meanwhile the growth of cancer cells is significantly inhibited. Our study will potentially guide PDMS surface modification approaches to produce biomedical devices.
研究领域:
生物医学工程
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材料科学
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细胞生物学
✓ 已验证
DOI
PubMed
高影响因子
DESALINATION
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2022
·
IF 11.211
Jing Jiang,Huiling Jiang,Ying Xu,Lunhong Ai
Solar water evaporation is emerging as one of the most cost-effective and sustainable technologies for efficient seawater desalination . However, salt crystallization during solar desalination severely limits light absorption and reduces evaporation efficiency. Balancing the desirable evaporation rate and the suppressed salt crystallization is critical for long-term solar desalination, but remains a major challenge. In this work, 1T/2H MoS 2 nanoflower embedded in a macroporous PDMS sponge (MoS 2 /PDMS) was fabricated and used as a novel solar evaporator for efficient and durable solar desalination. Thanks to the broadband absorption of MoS 2 and the thermal insulating PDMS sponge, the MoS 2 /PDMS sponge presents a high evaporation rate of 1.47 kg m −2 h −1 and an evaporation efficiency of 81.5 % in pure water under one sun irradiation (1 kW m −2 ). Importantly, the MoS 2 /PDMS sponge with macroporous structure and wet-state hydrophilic wettability achieves efficient and durable solar desalination in simulated seawater (3.5 wt% NaCl solution), effectively suppressing salt crystallization. This finding offers a new way to design robust evaporators with structural flexibility, efficient evaporation and durable desalting for solar desalination.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Fuwei Liang,Yang Xu,Shun Chen,Yalin Zhu,Yaxun Huang,Bin Fei,Wenwen Guo
The facile construction of a cotton fabric with excellent flame-retardant and water-proof abilities is of great interest for multitask requirements. Herein, a nonfluorine, highly efficient, and cost-effective multifunctional cotton fabric was fabricated via sequentially depositing a novel multielement-containing flame-retardant phosphorylated octa-aminopropyl POSS (PPA-POSS) and a fluorine-free superhydrophobic coating of zeolitic imidazolate framework-67@poly(dimethylsiloxane) (ZIF-67@PDMS). Influences of the PPA-POSS concentration and ZIF-67@PDMS formula on the fire retardancy and water repellency of treated cotton were systematically investigated. The optimized flame-retardant sample CTF3 with 6.2 wt % PPA-POSS exhibited a high limiting oxygen index (LOI) of 34% and self-extinguishing ability. CTF3 was further modified with a properly formulated superhydrophobic ZIF-67@PDMS coating. CTF3-PHB2 displayed enhanced thermal stability, flame retardancy, and outstanding superhydrophobicity. Thermogravimetric analysis (TGA) results demonstrated that CTF3-PHB2 presented a high char residue of 35.9%, which was 220.5% higher than that of the control cotton (11.2%). More importantly, the heat release rate (HRR), total heat release (THR), and average effective heat of combustion (av-EHC) values of CTF3-PHB2 were significantly reduced by 51.4, 56.2, and 68.4%, respectively, compared with those of a pure cotton fabric. Moreover, CTF3-PHB2 showed superhydrophobicity (WCA > 159.3°) and good mechanical abrasion resistance. In addition, CTF3-PHB2 also showed protective abilities such as antifouling, self-cleaning, and water/oil separation performances even for strong acid/alkali mixtures. Thereby, it is believed that the PPA-POSS@ZIF-67@PDMS coating is promising for application in multifunctional textile materials.
研究领域:
材料科学
·
纺织工程
·
化学工程
✓ 已验证
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2017
·
IF 2.858
Xiaofeng Liao,Hongqiang Li,Lin Zhang,Xiaojing Su,Xuejun Lai,Xingrong Zeng
With the environment pollution deteriorating by industrial waste water and oil leak, superhydrophobic materials for oil/water separation have attracted more attentions and become a worldwide research hotspot. Herein, we propose a facile dipping-UV curing approach to fabricating superhydrophobic hybrid coating on polyester fabric for oil/water separation by utilizing (3-mercaptopropyl) trimethoxysilane modified graphene oxide (mGO) and vinyl-terminated polydimethylsiloxane (V-PDMS). With mass ratio of mGO to V-PDMS increasing, the roughness of the fabricated mGO/PDMS hybrid coating on polyester fabric correspondingly increased and the water contact angle (WCA) reached up to 157°, demonstrating excellent water repellency. Importantly, due to the formation of crosslinked PDMS network with mGO as crosslinking points, the fabric exhibited good thermal stability and chemical resistance. Furthermore, the superhydrophobic fabric also possessed high oil/water separation efficiency at 99.8%, and still kept at 98.4% even after 15 separation cycles. Our findings stand out as a new tool to fabricate superhydrophobic materials and coatings with graphene and its derivatives for oil/water separation, showing great potential in practical applications such as oil spill accidents and industrial sewage emissions.
研究领域:
材料科学
·
环境工程
·
纳米技术
·
表面化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）