Advanced Materials Interfaces
·
2025
·
IF 4.4
Yanwen Hu,Yan Song,Guo Liang Li
The self-healing of polymer materials in aqueous environments remains a significant challenge. Herein, a protein-inspired strategy for hydrophobic/hydrophilic-induced microphase separation is proposed to construct self-healing polymers in an aqueous environment. During self-healing, the hydrophobic polydimethylsiloxane microphases in the damaged region reassociate with each other owing to the presence of dynamic hydrophobic interactions underwater. In addition, the hydrophilic carboxyl groups diffuse and penetrate to form hydrogen bonds. It is found that the microphase structure and self-healing efficiency can be adjusted by regulating the hydrophobic/hydrophilic components. The self-healing efficiencies of the as-synthesized polymers in deionized water and seawater environments reach to 99.1 and 98.7%, respectively. The molecular structures of the materials are characterized using Fourier-transform infrared spectroscopy and ultraviolet-visible spectroscopy while the aggregated structure of the as-synthesized polymers is examined using small angle X-ray scattering and atomic force microscopy (AFM). This design strategy, inspired by the biological sciences, will be expected to extend the application range of synthetic intrinsic self-healing polymers, especially in aqueous environments.
研究领域:
材料科学
·
生物材料
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2014
·
IF 4.908
Guang Lu Han,Pei Yu Xu,Ke Zhou,Qiu Gen Zhang,Ai Mei Zhu,Qing Lin Liu
A series of poly (arylene ether sulfone) block copolymers with hydrophilic segments containing fluorene groups were successfully synthesized as confirmed by 1 H NMR. The molecular weights were measured in the range 115–140 kDa by gel permeation chromatography (GPC). The hydrophilic segment showed a helical structure due to fluorene with butterfly-shaped framework in the main chain. With incorporating imidazolium groups, the microphase separation can also be achieved between the hydrophilic and the hydrophobic moieties. The membrane structure was characterized by positron annihilation lifetime spectroscopy (PALS) and small angle X-ray scattering (SAXS). The block copolymers were used to prepare membranes successfully for pervaporation separation of methanol (MeOH)/methyl tert-butyl ether (MTBE) mixture. The correlation between the membrane microstructure and the separation performance was discussed thoroughly. By increasing the hydrophilic segment proportion, the permeation flux increased while the separation factor declined. The membranes have the highest permeation flux (0.334 kg m −2 h −1 ) and the lowest separation factor (287) for a 15 wt% MeOH feed mixture at 40 °C, and the mass fraction of MeOH in the permeate is higher than 98 wt%.
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
EUROPEAN POLYMER JOURNAL
·
2023
·
IF 6
Jiancong Pan,Manru Liu,Biaowen Wei,Shijun Liao,Xiuhua Li
Three kinds of long-side-chain-modified tadpole-type anion exchange membranes (AEMs) named QPEK-DMODAs with microphase separated structures designed for electrodialysis (ED) acid recovery were fabricated from N,N-dimethyloctadecylamine (DMODA) as quaternization agent and poly(arylene ether ketone) (PEK) as skeleton, which is the copolymer of 2,2′,6,6′-tetramethyl biphenol (TMBP) and 4,4′-difluorobenzophenone (DFBP). QPEK-DMODAs were characterized systematically including basic structures and properties, ED recovery performance of H 2 SO 4 solutions without or with metal impurities, and corrosive acid stability. The well-defined microphase separation structure of QPEK-DMODA-3 is formed by the suitable distribution of tadpole ionic groups at the highest IEC of 2.09 mmol g −1 . The aggregate structure offers the membrane competent mechanical stability, ion conductivity and permselectivity, as well as low energy consumption and water transport ratio at the ED process. QPEK-DMODA-3 exhibits higher current efficiency (54.58 %) and recovery H + concentration (1.74 M) than those of QPEK-DMODA-1, QPEK-DMODA-2 and commercial AMX with comparable energy consumption to that of AMX under the ED conditions of Fe 2+ absence. Moreover, the Fe 2+ removal rate (88.74 %) and ion selectivity (S = 57.32) of QPEK-DMODA-3 are remarkably higher than those of AMX (67.10 % and 17.32) without the scarce of recovery efficiencies in the ED recovery tests of 0.50 M H 2 SO 4 solution containing 0.10 M of Fe 2+ . The combination of the comparable tolerance to strong acid to that of AMX and the confirmed good ED recovery performances declares a strong potential of tadpole-type QPEK-DMODA-3 in waste acid recovery by electrodialysis.
研究领域:
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2024
·
IF 6.5
Chengyu Hong,Jiawei Li,Jiaqi Zhang,Ruixue Zhai,Bin Fei,Chao Zhou
Inferior water resistance remains a bottleneck in the development of the waterborne polyurethane (WPU) coatings industry . Herein, a novel strategy for the facile preparation of hydrophobic antifouling WPU coatings is presented in this work. Specifically, a series of siloxane-branched modified polyurethanes (BSi-WPU) was prepared by synergistically introducing diol-hydroxyl single-ended silicone oil (DSSiO) as the branched modified monomer and hydroxylated fluorinated siloxane (HTFSi) as the functional soft-chain segment into the WPU system via a simple polycondensation process. The effects of the introduction of DSSiO on the water resistance and mechanical properties of the BSi-WPU were investigated, and the antifouling and chemical resistance of the modified coatings were also examined. The results demonstrated that the branched DSSiO possessed excellent surface migration efficiency, which effectively improved the water repellence (contact angle up to 109.3°), waterproofness (absorption reduced to 7.5 %), and hydrolysis resistance (minimum 1.6 % loss of strength after water immersion) of the coatings. In addition, owing to thermodynamic immiscibility, the incorporation of HTFSi and appropriate DSSiO amounts enlarged the microphase separation of the polyurethane , whereby the material exhibited improved mechanical properties over ordinary polyurethanes. More importantly, based on the surface enrichment of low-surface-energy silicon and fluorine units, the coatings exhibit excellent repellency to contaminated liquids and corrosive chemical solutions. This approach provided a more applicable alternative idea to the industrial fabrication of hydrophobic and antifouling WPU coatings.
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
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2019
·
IF 4.978
Yunwu Yu,Junhai Wang,Yan Wang,Wenhao Pan,Changwei Liu,Peng Liu,Lianjie Liang,Changwei Xu,Yunxue Liu
Phenolphthalein-based cardo poly(ether ether ketone) (PEEKWC)/polyethyleneimine (PEI) crosslinking membranes were prepared by solution casting followed by solution reaction at room temperature. The effects of reaction time and PEI content on the membrane structure and gas separation performances were investigated. Light transmittance measure and AFM evidenced the relationship between the microphase separation in PEEKWC-PEI membranes and reaction time. The CO 2 permeability increased with the PEI content, while the N 2 and CH 4 permeability remained nearly constant. This result indicated that only CO 2 was transported by the solution–diffusion mechanism and also that PEI exhibited a positive contribution as a fixed carrier for CO 2 facilitated transport. Meanwhile the PEEKWC-PEI crosslinking membranes showed higher selectivities than the pure PEEKWC membrane. The highest CO 2 /N 2 and CO 2 /CH 4 selectivities were about 131 and 122 increasing from 33 and 30, respectively. The crosslinking structure of membranes improved the CO 2 permeability stability.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
LANGMUIR
·
2022
·
IF 4.331
Yan Wang,Yu Wang,Lifeng Yan
A high-strength PVA-based eutectogel has been synthesized by a strategy of solvent-induced microphase separation. Here, PVA was dissolved in water, and green solvent DES (choline chloride/glycerol) was introduced to induce PVA to undergo microphase separation, leading to poorly solvated domains and highly solvated domains. In poorly solvated domains, the PVA chains were folded and crystallized, and the formed crystalline domains served as physical cross-linkers. Such cross-linking structures endowed the eutectogels with remarkable mechanical properties, showing strength in tension reaching up to 1.2 MPa and elongation at a break of 405%, with rupture toughness of 3.23 MJ m–3. Meanwhile, the as-obtained eutectogel possessed reprocessability and could be recycled through high-temperature dissolution and recasting. In addition, the eutectogel also exhibited excellent frost resistance, and its ionic conductivity could still reach 0.62 mS cm–1 at −40 °C. In addition, the eutectogel can maintain a stable output signal during a multiple strain cycle, showing the potential application in the flexible sensor. The eutectogel is capable of detecting the bending movement of joints and identifying the different bending angles of fingers, showing a certain applied potential in motion detection of the human body.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
DOI
高影响因子
COMPOSITES COMMUNICATIONS
·
2025
·
IF 7.7
Shuqiang Peng,Yifan Xu,Yuheng Wang,Laiwen Cai,Zesheng Guo,Xianmei Huang,Weiqiang Chen,Longhui Zheng,Xiangfang Peng,Lixin Wu
Vat photopolymerization (VPP) 3D printing has emerged as a transformative method for fabricating structurally tailored stretchable ionic conductors. However, developing hydrophobic ionic conductive elastomers (ICEs) that simultaneously achieve high electrical performance, mechanical robustness, and environmental stability remains challenging. Herein, we present a photothermal dual-curing strategy to overcome this limitation by integrating a dynamic hindered urea bond-functionalized blocked polyurethane acrylate with a hydrophobic ionic liquid. The photocuring process induces microphase separation, forming continuous ion-conductive pathways that achieve high ionic conductivity (5.30 mS m −1 ) at a low ionic liquid loading of 30 wt%. Subsequent thermal annealing drives the formation of high-molecular-weight polyurethane/polyurea chains, creating a dynamic crosslinking-interpenetrating network that synergistically enhances tensile properties and resilience (tensile strength of 3.0 MPa, elongation of 1036 %, and 0.5 % residual strain at 50 % deformation). The resulting ICEs exhibit outstanding hydrophobicity (water contact angle: 112.3°) and anti-swelling stability. Using VPP 3D printing, we fabricate high-resolution architectured ICEs as sensors for real-time monitoring of finger movements and as soft actuators for underwater applications. Additionally, ICEs-based triboelectric nanogenerators with microstructured surfaces demonstrate stable and enhanced voltage output. This work establishes a universal paradigm for designing high-performance ICEs via additive manufacturing, advancing their applications in aquatic sensors and self-powered systems.
研究领域:
材料科学
·
柔性电子
·
增材制造
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2025
·
IF 26.8
Yichen Ding,Dan Huang,Yao Wang,Xin Zhao,Ran Han,Mingkun Tang,Baohua Li,Dong Zhou,Feiyu Kang
The sustained hydrogen evolution and zinc (Zn) dendrite growth greatly impede the practical application of low-cost aqueous Zn metal batteries (ZMBs). Herein, for the first time, a microphase separation strategy is proposed to construct a ″water-in-oil (W/O) electrolyte to endow durable ZMBs. As validated by theoretical modeling and experimental characterizations, the unique reverse micelle structure within the electrolyte not only disrupts water hydrogen bonding and efficiently inhibits the water consumption at Zn anode, but also undergoes directed movement and reversible demulsification under electric field, thus enhancing the anode desolvation kinetics and inhibiting the interfacial side reactions. Owing to the simultaneous regulation of water molecules in both electrolyte bulk and anode interface, this W/O electrolyte achieves a high Zn plating/stripping Coulombic efficiency of 99.76% over 6000 cycles, and maintains an extend lifespan in Zn||V 10 O 24 ·12H 2 O (VOH) cells with negligible hydrogen evolution and dendrite formation. These key findings are expected to promote the electrolyte engineering toward reversible ZMBs.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·Vol. 34
·期 37
·2401999
·
IF 18.5
Yifeng Sheng,Xiaoqing Ming,Chengjiang Lin,Chang Yang,Xiwei Guo,Xiaozheng Duan,He Zhu,Qi Zhang
Stiffness-variable polymers have found their enormous potential in practical applications that require automatic adaptation and modulation. However, prevailing materials are often constrained by specific operational triggers, limited mechanical responsiveness, and inadequate universality. In this study, drawing inspiration from the mechanism of non-solvent induced phase separation (NIPS), a novel series of polymers exhibiting reversible water-triggered stiffening is designed and synthesized by covalently incorporating poly(ethylene glycol) (PEG) as a non-solvent mediator onto the hydrophobic poly(meth)acrylates backbones. Owing to the hydrophilicity difference between PEG sidechains and backbones, these polymers display swift and substantial alterations in stiffness, with large-scale and regulable changes (from several-fold to exceeding 200-fold) upon water penetration, resulting from water-induced microphase separation. Meanwhile, the polymers also possess intrinsic dual-responsive shape-memory properties. Due to the excellent commercial availability, versatility, and designability of these polymers, the work provides novel perspectives for the advancement of water-triggered stiffening materials and opens avenues for their prospective applications in various domains.
研究领域:
材料科学
·
高分子化学
·
生物材料
✓ 已验证
DOI
高影响因子
MACROMOLECULAR CHEMISTRY AND PHYSICS
·
2021
·Vol. 222
·期 10
·2000439
·
IF 2.527
Shikai Hu,Tao Shou,Guoqing Fu,Xiuying Zhao,Zhao Wang,Liqun Zhang
The high content and regular distribution of hard segment (HS) are necessary to achieve high-performance thermoplastic polyurethane (TPU), and the HS unit of TPU is generated from the reaction of diisocyanate and chain extender. However, the traditional chain extenders are mainly aliphatic diol that cannot provide rigid groups to improve polyurethane performances. Herein, a novel chain extender bis(hydroxyethyloxycarbonylamino)hexane (BHH) that contains two urethane groups is designed and used to construct high-performance TPU by increasing content and regular distribution of HS. BHH is synthesized using ethylene carbonate (EC) and hexamethylenediamine (HDA) via a ring-opening reaction. Subsequently, the effect of BHH on the polyurethane performances is studied with respect to a typical TPU by using polytetramethylene ether glycol (PTMG) and hexamethylene diisocyanate (HDI) as the starting materials. The amount of HDI considerably differs for each polyurethane, aiming to ensure the same total content of urethane groups. When compared with the traditional ethylene glycol-extended polyurethane, the size and distribution of the HS domains of the BHH-extended polyurethane are obviously more homogeneous, which proves BHH-extended polyurethane has better microphase separation. Furthermore, ordered hydrogen bonding, the mechanical properties, and heat-resistance performance are significantly improved, suggesting a potential method to design TPU delivering outstanding performance.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Xiaojing Zhang,Kexin Chen,Aman Liu,Jiafeng Qian,Jian Li,Chenyi Wang
A series of amphiphilic ion exchange membranes (50PS–PBP-x) containing propyl sulfonic acid, long octadecyl side chains, and piperidinium quaternary ammonium structures are designed and prepared by the Menshutkin reaction of poly(biphenyl piperidinium)s with sodium 3-bromopropanesulfonate and 1-bromooooctadecane. The surface morphology and microphase separation structures of the amphiphilic membranes are observed by scanning electron microscopy (SEM) and atomic force microscopy (AFM), respectively. Their water uptake and swelling ratio are in the range of 9.2–20.2 and 3.7–7.8%, respectively. The area resistances and vanadium ion permeabilities for these membranes are in the range of 0.35–0.51 Ω cm2 and 1.9 × 10–7–4.7 × 10–7 cm2 min–1, respectively. The vanadium redox flow battery based on the representative 50PS–PBP-30 membrane also exhibits good performance. Its maximum energy efficiency reaches 81.7% and does not obviously decline after 200 cycles of running.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Wenqing Zhao,Jiawei Qin,Yaoyu Xiao,Hongwei Ma,Yanshai Wang,Ping Tang,Yue Pan,Ruidong Cheng,Li Han
Multifunctional hydrogels have garnered significant interest but remain challenging due to the complex preparation process and high cost of raw materials. Herein, bisphenol A diglycidyl ether (BADGE) and poly(ethylene glycol) diglycidyl ether (PEGDGE) were reacted with 3-amino-1-propanol via a catalyst-free amine–epoxy “click” chemistry, followed by the addition of hydrophilic 1,3-propane sultone (1,3-PS) to a higher water content, and then cross-linked with hexamethylene diisocyanate (HDI) in one-pot to provide a polymer network, i.e., PBAxPEGyPU–PS. The two-step cross-linking method enables greater precision in controlling the cross-linking density and preparation process. The in situ microphase-separated porous PBA50PEG50PU–PS demonstrates nanosized pores of approximately 100 nm and uniform distribution due to the thermodynamic incompatibility, enabling superior mechanical properties and high transparency of 87.9%. Upon a water absorption and water loss cycle, a higher transparency of 89.7% was obtained with a lower nanosized pore of approximately 50 nm due to the solvent-induced self-assembly of its amphiphilic structure. Furthermore, the bilayer hydrogel composed of WPBA90PEG10PU–PS and WPBA50PEG50PU–PS was designed for a “Janus” soft actuator based on the difference between the two sides in swelling ability upon water absorption, which has been applied in underwater grasping and humidity-responsive switch. To maintain the inherent soft elasticity and conductivity of the hydrogel, glycerol (Gly) and sodium ion (Na+) were introduced into the mixture. It shows that WPBA50PEG50PU–PS/Gly67 maintains environmental stability with more than 80% weight at 20 °C for 72 h and shows additional frost resistance at −20 °C, and the dual cross-linking network of WPBA50PEG50PU–PS/Gly67/Na10 exhibits the best comprehensive properties of high tensile strength and good conductivity. Meanwhile, 1,3-PS provides a quaternary ammonium salt and sulfobetaine, endowing the multicomponent WPBA50PEG50PU–PS/Gly67/Na10 with additional antibacterial and sensing capabilities. This work provides a versatile approach for preparing transparent multifunctional hydrogels and highlights their potential in various applications.
研究领域:
材料科学
·
高分子化学
·
生物材料
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）