iScience
·
2025
·Vol. 28
·期 11
·
IF 4.1
Yiyang Gao,Qihao Jiang,Jing Chen,Yanming Liu
Through molecular design, this study developed a conformal self-healing organogel (CSHO) via molecular design. Utilizing acryloylmorpholine (ACMO) and hydroxyethyl acrylamide (HEAA) as monomers, tributyl citrate (TBC) as the solvent, and lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) as an electrolyte salt, the organogel was polymerized by UV curing. A dual supramolecular network of hydrogen and lithium bonds provided excellent mechanical strength without chemical crosslinkers, while also enabling self-healing. TBC enhanced flexibility and established continuous ion channels, boosting ionic conductivity. The CSHO exhibited excellent conformability to complex surfaces, replicating fine textures, and was recyclable through a water-based process. Mechanical sensing tests showed that the CSHO could respond sensitively and in real time to pressing and stretching. This work presents a strategy for multifunctional ionic conductors, advancing flexible sensors and wearable devices.
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PubMed
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2026
·
IF 3.6
Yapeng Zhang,Jiutao Hu,Zhenpeng Wang,Yalu Liu,Yihao Zhang,Jixiang Xue,Xiaobo Huang
Diluents play a critical role in dual-cured polyurethane systems that incorporate both photo and thermal curing mechanisms. Currently, the diluents employed in such systems are predominantly acrylate monomers, with limited exploration of non-acrylate alternatives. Based on this, we selected three diluents for deep study: 4-acryloylmorpholine (ACMO), isodecyl acrylate (IDA), and vinyl ethylene carbonate (VEC) used in Non-isocyanate Polyurethane (NIPU) synthesis. The key factor influencing viscosity was identified as the electrostatic interaction energy between diluent and prepolymer molecules. Compared with ACMO and IDA, the dilution efficiency of VEC was improved by 38.6% and 15.6%, respectively, owing to its higher polarity. VEC remains a small molecule within the system and functions as a plasticizer, leading to improved plasticity of the final material. In contrast, both IDA and ACMO participate in polymerization, forming a secondary network. The distinction lies in their structural contribution: the rigid morpholine ring in ACMO improves the toughness of the material, whereas the flexible chain of IDA imparts notable resilience to the dual-cured polyurethane. These findings advance the understanding of the relationship between diluent structure and the viscosity of the prepolymer and the performance of dual-cured polyurethanes, thereby providing a theoretical foundation for the developing 3D-printable polyurethane materials. Highlights VEC, a monomer from NIPU synthesis, is introduced as an efficient plasticizing diluent. Electrostatic interaction, rather than van der Waals forces, governs diluent efficiency in polyurethane resins. Diluent structure dictates properties: rigid rings boost toughness, flexible chains impart resilience.
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ACS Applied Polymer Materials
·
2026
·
IF 4.7
Youbing Li,Chonglin Liu,Yunsheng Xu,Shuangfei Xiang,Wenjun Peng,Xianming Zhang,Minna Hakkarainen,Pengwu Xu,Weijun Yang,Piming Ma
Acylhydrazone-based Covalent Adaptable Networks (CANs) are attractive candidates for recyclable thermosets due to their strong hydrogen bonding and excellent creep resistance. However, their slow exchange kinetics under catalyst-free conditions severely restricts reprocessability and advanced manufacturing potential. Herein, a substituent-guided molecular design strategy is proposed to tune the acylhydrazone exchange dynamics through the electronic effects of aromatic substituents. This approach enables programmable control over viscoelastic behavior, achieving a unique balance between rapid stress relaxation (τ = 187 s at 100 °C) and high creep resistance (onset up to 130 °C). The nitro-functionalized network exhibits strong intrinsic UV absorption, enabling dye-free, high-resolution DLP 3D printing (600 μm features) with excellent printing fidelity. Moreover, the printed materials display efficient reprocessability at 180 °C and thermal self-healing at 130 °C with minimal loss of mechanical strength. This catalyst-free and generalizable design provides deeper insight into substituent-driven dynamic control and offers a practical pathway for recyclable, precision-manufacturable thermoset systems relevant to sustainable polymer engineering.
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JOURNAL OF POLYMER SCIENCE
·
2025
·
IF 3.6
Haiwei Ma,Xianzhe Li,Xin Ding,Chunlei Cao,Jianying Ma
This paper aimed to prepare oligomers (IA-GMA) through ring-opening reactions using biologically derived itaconic acid (IA) and epoxy methacrylate (GMA). By mixing IA-GMA, isobornyl acrylate (IBOA), and various diluents, followed by dilution and addition of photoinitiators and crosslinking agents, a light-curing resin for 3D printing was prepared. The ring-opening reaction introduced a large number of double bonds into IA-GMA to enhance photopolymerization efficiency; the resin formulation was optimized by changing the type of diluent and the concentration of photoinitiator. The mechanical properties, thermal performance, and flexibility of the 3D printing material were systematically studied. Experimental results showed that when acrylamide (ACMO) was used as a diluent and the photoinitiator concentration was 4 wt%, the light-curing resin exhibited excellent mechanical properties and thermal stability. The impact strength reached 1.88 kJ/m 2 , the tensile strength reached 41 MPa, and it also had excellent flexibility (540° in one direction). Compared with traditional petroleum-based resins, the light-curing resin based on IA showed no significant performance disadvantage, contributing to the development of environmentally friendly, balanced-performance photopolymer resins for additive manufacturing applications. Graphical Preparation process of IA-based photosensitive resins.
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NEW JOURNAL OF CHEMISTRY
·
2025
·Vol. 49
·期 44
·19096-19109
·
IF 2.5
Qian Feng,Tianhai Yi,Hongxiang Peng,Haojun Zhang,Yong Zheng
To effectively control the fluid loss performance of cement slurry in ultra-deep wells under ultra-high temperature conditions, this study used nano-silica as the raw material, modified its surface with vinyltriethoxysilane (VTES) and then grafted long-chain polymers to prepare an ultra-high temperature oil well cement fluid loss additive (UHTF). The UHTF was characterized by FTIR, 1H-NMR, SEM, EDS, TEM, TG, etc. Its fluid loss control effect on cement slurry at ultra-high temperatures was evaluated using a high-temperature and high-pressure filter press. The mechanism of action was studied through a mathematical description of the filtration process, analysis of the filter cake structure, analysis of the slurry stability, and temperature-variable UV spectrophotometric analysis of the UHTF solution. The results show that the UHTF has a rigid-flexible coupling structure and exhibits excellent ultra-high temperature fluid loss control performance. At 240 °C and a pressure difference of 6.9 MPa, the UHTF can reduce the API fluid loss of cement slurry to less than 20 mL without adversely affecting its thickening performance or compressive strength development. The fluid loss control mechanism of the UHTF lies in its ability to improve the dispersion of solid particles, self-adaptively plug pores in the filter cake, and form a polymer film on the surface of the filter cake to increase its compactness, thereby increasing the resistance to liquid phase seepage. Meanwhile, it can also form a network structure through hydrophobic associations to retain the fluid within the slurry, thereby contributing synergistically to effective fluid loss control.
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ACS Applied Polymer Materials
·
2026
·
IF 5.2
Xin Tian,Yibo Sun,Tianyu Wang,Tingxuan Duan,Hongli Guo,Huibin Su,Xiaoyang Zhang,Xuhan Kou,Fei Jia,Guanghui Gao
In recent years, flexible strain sensors fabricated by using ultraviolet light-curing technologies have garnered significant attention for wearable devices and human motion monitoring. However, developing hydrophobic flexible sensors with good mechanical strength and environmental stability remains a great challenge. Herein, an ultraviolet-curable silane side-chain-modified polyurethane acrylate material was fabricated for flexible sensing applications. A hydroxyl-terminated silane coupling agent (APIP) was synthesized to modify polyurethane acrylate (PUA). The results indicate that the amount and structure of APIP affect the polymerization performance, thermodynamic properties, tensile properties, and hydrophobicity of PUA. When 20 wt % APIP was added, the sample (PUA-APIP/20%) exhibited a water contact angle of 104°, which represents a significant increase from the 74° of the original PUA. The tensile strength and elongation at break of PUA-APIP/20% increased to 8.67 MPa and 378.84%, respectively. The composite of PUA-APIP and lithium bis(trifluoromethane sulfonyl) imide (LiTFSI) could be instantly cured under UV irradiation to produce a flexible thin-film strain sensor. This composite strain sensor was used to detect large-amplitude human movements (such as finger, elbow, and knee flexion) as well as subtle muscle contractions and can yield stable strain responses. This work offers strategies for the development and sustainable production of wearable, flexible electronic devices.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·Vol. 61
·期 15
·10310-10324
·
IF 4.4
Chen Yuliang,Fan Peng,Liu Zupeng,Xin John H.,Jing Titao
Dielectric elastomers (DEs) can deform under electric fields, forming the cornerstone of soft actuators. For optimal performance at low operating voltages, a high dielectric constant (ε r ) and a low Young's modulus (Y) are essential. While embedding particles in elastomers is a well-established strategy to increase ε r , conventional rigid particles inevitably raise Y, creating a fundamental conflict in DE performance. Here, we present an approach that incorporates soft gel microparticles to simultaneously enhance ε r and resolve this contradiction. The stretchable gels conform to the elastomer during deformation, exhibiting a softening effect. As the concentration of gel microparticles increases, Y progressively declines, avoiding the stiffness issue. At the same time, the gradual enhancement in ε r significantly amplifies the actuation sensitivity of gel-infused polydimethylsiloxane (PDMS), increasing it from 2.6 MPa −1 in the pristine elastomer to 49.1 MPa −1 at 60% gel content. Furthermore, the tunability of the gel filler composition allows for customization to accommodate various DE systems. A soft micropump fabricated from these composites demonstrated a remarkable reduction in operating voltage. This work highlights the transformative potential of soft gel fillers in DE composites, addressing the limitations of rigid fillers and paving the way for further advancements in soft actuator technologies.
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BIOMATERIALS
·
2026
·
IF 13.6
Dan Chen,Lingling Zheng,Chao Wang,Liya Ai,Wenjie Wang,Yubo Fan
To address the limitations of traditional barrier membranes in alveolar bone regeneration, this study aimed to design and fabricate 3D architected degradable scaffolds with an integrated barrier functional shell and explore their osteogenic efficacy, particularly the effect of shell microstructure on osteogenesis. Four types of scaffolds were fabricated using degradable 45S5 bioactive glass as the raw material through digital light processing technology. Specifically, the control group consisted of scaffold with barrier functional shell that featured through-holes, and the three experimental groups comprised scaffolds with barrier functional shells featured non-through-holes, each with micro-pits of varying depths (0 μm, 60 μm, and 120 μm). The integrated scaffold exhibits excellent biological activity, appropriate degradability of 29.87 ± 6.89% at 12 weeks, and matched mechanical properties with compressive strength of 9.12 ± 1.82 MPa and elastic modulus of 0.98 ± 0.23 GPa. Experimental results indicated that the non-through-holes shell groups achieved a significantly greater osteogenic height of 4.53 ± 0.11 mm compared to the through-holes group of 3.25 ± 0.14 mm. Notably, the deepest micro-pits at 120 μm group showed the most remarkable osteogenic efficiency with a bone volume fraction of 30.72 ± 5.52% and a bone area fraction of 28.29 ± 3.67%. In conclusion, this study confirms that the scaffold with an integrated barrier functional shell possesses excellent barrier and osteogenic properties. By adjusting the design of the microstructure on the shell, its barrier function can be effectively regulated, thereby providing a practical and effective solution for alveolar bone regeneration.
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高影响因子
Gels
·
2022
·Vol. 8
·期 11
·722
·
IF 4.432
Shenglong Shi,Jinsheng Sun,Kaihe Lv,Jingping Liu,Yingrui Bai,Jintang Wang,Xianbin Huang,Jiafeng Jin,Jian Li
To overcome the problems of long dissolution time and high investment in surface facilities of powder thickeners in hydraulic fracturing, a novel suspension of a thickener as a fracturing fluid was prepared using powder polyacrylamide, nano-silica, and polyethylene glycol by high-speed mixing. The suspension and powder were compared in terms of properties of solubility, rheological behavior, sand carrying, drag reduction, and gel breaking. The results showed that the suspension could be quickly diluted in brine within 5 min, whereas the dissolution time of powder was 120 min. The suspension exhibited better performance in salt resistance, temperature resistance, shear resistance, viscoelasticity, sand carrying, and drag reduction than powder. The powder solution was broken more easily and had a lower viscosity than suspension diluent. These improvements in properties of the suspension were due to the dispersion of nano-silica in the polymer matrix; the mobility of thickener chains was inhibited by the steric hindrance of the nano-silica. Nano-silica particles acted as crosslinkers by attaching thickener chains, which strengthened the network structure of the thickener solution. The presence of hydrogen bonds between the thickener matrix and the nano-silica restricted the local movement of thickener chains, leading to a stronger spatial network. Therefore, this novel suspension showed good potential for fracturing applications.Keywords:hydraulic fracturing;suspension;nano-silica;powder thickener;network structure
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高影响因子
Arabian Journal of Chemistry
·
2023
·
IF 6
Baimei Dai,Peng Xu,Mingbiao Xu,Qisheng Jiang,Qinglin Liu,Siwei Wang
It is difficult to seal oil-based drilling fluids in the large pore and micro-fracture formation, and there are few suitable materials for the oil phase with good sealing ability at present. In order to solve the problem of the lack of sealing ability of oil-based drilling fluids, acrylamide, 2-acrylamido-2-methylpropane sulfonic acid, and acryloyl morpholine were used as monomers, N' N -methylenebisacrylamide was used as a cross-linking agent, Span-80 and Tween-60 were used as emulsifiers, and 2,2′-azobis(2-methylpropionamidine) dihydrochloride was used as an initiator. Polymer microsphere emulsion OPME was synthesized by inverse emulsion polymerization. The structure of polymer microspheres was characterized by infrared spectroscopy, scanning electron microscopy, electron microscopy, H NMR, laser particle size analysis and thermogravimetric analysis. The optimal synthesis conditions were determined by the control variable method: the monomer ratio of acrylamide, 2-acrylamido-2-methylpropane sulfonic acid, and acryloyl morpholine was 45:20:15, the amount of emulsifier was 8%, and the reaction temperature was 55℃. The synthetic polymer microspheres were added to the oil-based drilling fluids to perform filtration and loss plugging at atmospheric pressure and high-temperature and high-pressure, as well as pore and artificial fracture core plugging evaluation. The evaluation results show that the permeability reduction rate of pore core can reach 82%, and that of fracture core can reach 100% by adding polymer microspheres with 3% dosage. Finally, the pressure transmission experiment proves that the addition of polymer microspheres can slow the pressure transmission and filtrate intrusion, and enhance the stability of wellbore. Therefore, polymer microspheres are a micron-level plugging agent with good compatibility and high performance with oil-based drilling fluids, and the 3% dosage can better seal the formation of large pores and micro-fractures, which has a good potential for field application.
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JOURNAL OF APPLIED POLYMER SCIENCE
·
2022
·Vol. 140
·期 3
·e53338
·
IF 3.057
Shenglong Shi,Jinsheng Sun,Kaihe Lv,Qingzhi Wen,Yingrui Bai,Jintang Wang,Jiafeng Jin,Jingping Liu,Xianbin Huang,Jian Li
To prepare the thickener of fracturing fluid with temperature resistance, salt resistance and quick dissolution, an emulsion thickener (ASC) was synthesized by acrylamide, acrylic acid, 2-acrylamide-2-methylpropanesulfonic acid, and acryloyl morpholine. The dissolution, salt resistance and drag reduction of ASC, and the viscoelasticity, temperature resistance and shear resistance and gel breaking properties of fracturing fluid formed by ASC and zirconium crosslinker were investigated. The results showed that the sticky time of ASC was less than 60 s and the drag reduction rate was 72.5% in 100,000 mg/L brine, showing that ASC had thickening ability in high salinity brine and satisfied the requirements of continuous fluid preparation on the fracturing process. The viscosity of ASC fracturing fluid was 98 mPa s after shearing at 200°C and 170 s −1 for 150 min when the salinity was 100,000 mg/L. When the ammonium persulfate concentration was 400 mg/L, the viscosity of the broken fluid was 4.0 mPa s. The temperature resistance, salt resistance and shear resistance of ASC emulsion fracturing fluid could be significantly improved by the introduction of acryloyl morpholine, ASC fracturing fluid had the characteristics of high elasticity and low viscosity, which could meet the application requirements under ultra-high temperature reservoirs.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 24
·11430-11442
·
IF 4.682
Xu Jun,Zhang Zixiang,Nie YongJia,Liu Yanxia,Fan Yue,Zhao Wenpeng,Feng Xianqi
Self-healing materials can autonomously heal injury like organism, which have attracted increasing attention from academics and industry engineers. However, the mechanical property and self-healing ability of the self-healing material is hard to be reconciled. Here, we report a simple approach to fabricate fast self-healing materials with high mechanical strength and improved triple shape memory effect by incorporation of nanoclay into a polymer matrix. The nanocomposite was prepared by in situ polymerization of poly(ethylene glycol) 400 methyl ether acrylate (mPEG-acrylate) and acryloylmorpholine (ACMO) in the presence of nanoclay. The thus obtained composite exhibits remarkable mechanical properties of an optimistic maximum tensile strength of ~ 8.9 MPa, and high healing efficiency of ~ 99.6% can be achieved after healing for only 1 min at room temperature. This strategy provides insights for the preparation of high-strength, multi-shape memory and fast self-healing composites. Graphical abstract
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高影响因子
危险品化学品经营许可证（带存储）