LANGMUIR
·
2024
·
IF 3.7
Yipeng Fei,Xingyi Zhou,Jinbo Liu,Haoxuan Xia,Jueyong Ning,Li Liu,Peng Zhu,Ruiqi Shen
The controlled construction of hybrid material structures can effectively regulate the physical, chemical, and functional properties of materials. This work explores the feasibility of coupling microdroplets technology and photopolymerization methods to achieve controllable construction of hybrid structures on the surface of ultrafine zirconium (Zr) powder, and investigates the effects of different hybrid structures on the surface mechanical properties, thermal oxidation performance, and electrostatic safety of Zr powder. The photopolymerization reaction process of PMMA on the surface of Zr powder was analyzed, revealing the principle of accelerated photopolymerization reactions within microdroplets, which was experimentally validated. Furthermore, by altering the polymerization reaction conditions and with the assistance of hydrofluoric acid (HF), a mechanism for controlling the hybrid structures on the surface of Zr powder was proposed. The results demonstrated that the collaborative effect of microdroplets and photopolymerization methods efficiently controlled the content and structural characteristics of the PMMA coating on the surface of Zr powder. The further introduction of HF was found to adjust the morphology of the surface hybrid structures and significantly improve the thermal oxidation performance and electrostatic safety of the Zr powder. These findings provided insights into the surface property regulation of active energetic materials and paved the way for the controlled preparation of inorganic–organic hybrid materials.
研究领域:
材料科学
·
化学工程
·
表面化学
·
高分子科学
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DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Haifei Wang,Guanhua Lin,Yang Lin,Yang Cui,Gang Chen,Zhengchun Peng
Based on real-time detection of plantar pressure, gait recognition could provide important health information for rehabilitation administration, fatigue prevention, and sports training assessment. So far, such researches are extremely limited due to lacking of reliable, stable and comfortable plantar pressure sensors. Herein, a strategy for preparing high compression strength and resilience conductive iongels has been proposed by implanting physically entangled polymer chains with covalently cross-linked networks. The resulting iongels have excellent mechanical properties including nice compliance (young’s modulus < 300 kPa), high compression strength (>10 MPa at a strain of 90 %), and good resilience (self-recovery within seconds). And capacitive pressure sensor composed by them possesses excellent sensitivity, good linear response even under very small stress (∼kPa), and long-term durability (cycles > 100,000) under high-stress conditions (133 kPa). Then, capacitive pressure sensor arrays have been prepared for high-precision detection of plantar pressure spatial distribution, which also exhibit excellent sensing performances and long-term stability. Further, an extremely sensitive and fast response plantar pressure monitoring system has been designed for monitoring plantar pressure of foot at different postures including upright, forward and backward. The system achieves real-time tracking and monitoring of changes of plantar pressure during different static and dynamic posture processes. And the characteristics of plantar pressure information can be digitally and photography displayed. Finally, we propose an intelligent framework for real-time detection of plantar pressure by combining electronic insoles with data analysis system, which presents excellent applications in sport trainings and safety precautions.
研究领域:
生物医学工程
·
材料科学
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产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2025
·Vol. 51
·期 24
·41304-41311
·
IF 5.6
Chunran Wu,Wei Li,Shijie Hao,Wen Dai,Lingni Yang,Jiawei She,Qing Zhang,Fenglin Wang,Xingyu Chen,Haijun Mao,Weijun Zhang,Hu Ye,Yujiu Zhou,Zhuofeng Liu
Polymer nanocomposites with high energy density hold great promise for the future miniaturization of dielectric capacitors in modern electronics. However, their performance is limited by the poor dispersion of inorganic fillers and severe interfacial electric field distortion. To address the above challenges, ultrathin two-dimensional (2D) BiOCl nanosheets are employed as the nanofiller for the first time, achieving excellent energy storage performance for the PMMA-based nanocomposites. Remarkably, the nanocomposite film with 0.5 wt% 2D BiOCl exhibits an outstanding energy storage density of 13.28 J/cm 3 and charge-discharge efficiency of 86.11 %, which is 108 % and 13.4 % higher than that of the pristine PMMA . Furthermore, the underlying enhancement mechanism is elucidated by finite element simulations. This work highlights the exceptional potential of 2D BiOCl as a novel nanofiller for designing high-performance polymer nanocomposites.
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产品关联
DOI
高影响因子
RSC Advances
·
2017
·Vol. 7
·期 54
·33701-33707
·
IF 3.108
Yufen Zhang,Weiwei Li,Ronglan Wu,Wei Wang
We report a study on the triple-shape memory polymer composition of polyurethane/polymethyl methacrylate (PU/PMMA) synthesized using reaction-induced phase separation. Microscopic phase separation, which forms sea-island structures, enhances the shape memory effect, and phase separation can be achieved by changing the volume ratio of the two components in the polymer composites. In this study, we used the same method and synthesized 5 composites with different volume ratios of PU/PMMA. The composites with a PU/PMMA ratio of 2 : 1 exhibited triple-shape memory effect. The PU/PMMA composites were characterized by X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), scanning electron microscopy (SEM) and dynamic mechanical analysis (DMA). Based on the studies, we propose that reaction-induced phase separation can be used as a general approach to achieve the shape memory effect.
研究领域:
材料科学
·
高分子化学
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Qian Liu,Miao Li,Jiahao Zhou,Tianxing Ji,Xuna Liu,Zhongquan Zhong,Ping Yang
To address the issues of poor fluidity, significant loss during cycling, and unsuitability for industrial adsorption of lithium ion-sieve powders, the Ce 4+ -doped layered Mn-based lithium ion-sieve precursor (Li 1.37 Ce 0.001 Mn 1.22 O 3 ) was fabricated into spherical particles, by using blend of PVB and PMMA with anti-solvent phase inversion method. The incorporation of PMMA appropriately could increase the porosity and pore size of the spherical particles, while enhancing strength and compression resistance. The porosity of SCLMO was 47.86%, with particle size range of 1.5–2.0 mm. The maximum load capacity was 627.53 N, while the maximum stress was recorded at 233.46 MPa, and the Young’s modulus was 369.70 MPa. The adsorption process of corresponding lithium ion-sieve spherical particles (SCHMO) was characterized by both physical and chemical reactions, adhering to Langmuir adsorption isotherm model and following pseudo-second-order kinetics, with intraparticle diffusion being the dominant mechanism. After 15 adsorption cycles, the adsorption capacity of SCHMO for Li + stabilized at approximately 20 mg/g, with Mn dissolution loss ratio of less than 0.5%. In experiments involving the static adsorption of Li + from actual oil and gas field produced water, the adsorption capacity was recorded at 17.84 mg/g. The lithium ion-sieve spherical particles exhibited significant potential for further industrial applications.
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产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2026
·
IF 5.1
Yuxin Pan,Guangrui Shi,Zhen Bao,Qi Liu
Metal halide perovskite quantum dots (PQDs) have attracted considerable attention for wide-color-gamut display applications due to their high quantum yield and narrow-band emission characteristics. However, their poor stability has long been a major obstacle to practical applications. In this study, PQDs were confined within SBA-15 molecular sieves via a hot-injection method. The resulting composites were further embedded into a poly(methyl methacrylate) (PMMA) matrix, successfully yielding tricolor composite films. These composite films retain vivid emission colors and exhibit excellent optical performance. Compared with the corresponding B, G, and R-SBA powders, the PMMA-composited blue, green, and red films show almost no noticeable red shift in their maximum emission wavelengths. Meanwhile, the full width at half maximum (FWHM) of the emission peaks is significantly narrowed, indicating improved spectral purity. In addition, the composite films demonstrate outstanding water stability. After immersion in water for 840 h, the photoluminescence (PL) intensities of the B, G, and R-SBA/PMMA composite films remain at approximately 75%, 110%, and 46% of their initial values, respectively. Furthermore, white-light LEDs constructed from the tricolor composite films exhibit a wide-color-gamut, which covers 131% of the NTSC standard. These results indicate that the composite films show great potential for display applications. Overall, this work demonstrates that the composite films, combining excellent optical performance with superior water resistance, provide a promising strategy for applications in LED backlighting and display devices.
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DOI
高影响因子
MACROMOLECULAR BIOSCIENCE
·
2026
·Vol. 26
·期 3
·e70172
·
IF 4.2
Teshale Ayano Begeno,Tibebu Shiferaw Kassa,Tassew Belete Bahru,Chen Shuhuan,Shi Jialei,Yong Liu,Lingling Qin,Yaqi Zhang,Zhenxia Du
Skin wound healing involves proliferation, inflammation, regeneration, and remodeling. These processes are severely impaired in diabetes due to advanced glycation end-product accumulation, excessive reactive oxygen species, and vascular dysfunction, requiring multifunctional therapeutic and innovative wound care approaches. Thus, many electrospun polymeric matrices were investigated to enhance wound-healing efficacy; however, few studies have examined ZnO NPs embedded multi-component polymeric nanofibers for diabetic wound healing, where infection, oxidative stress, and delayed regeneration persist as major impediments to diabetic wound repair. Addressing these challenges, this study developed a novel therapeutic strategy using electrospun nanofibers of poly(vinyl alcohol)-chitosan-poly(methyl methacrylate) (PVA-Cs-PMMA) integrated with biogenic zinc oxide nanoparticles (Bio-ZnO NPs) synthesized from Syzygium guineense . Comprehensively characterized using UV-vis, FTIR, XRD, TEM, SEM-EDX, and XPS analyses, confirming nanoscale crystalline structure and strong polymer-nanoparticle interactions. Bio-ZnO NPs exhibited potent antibacterial activity against Staphylococcus aureus (29.38 ± 0.91 mm) and Escherichia coli (27.82 ± 0.95 mm), alongside strong antioxidant performance (IC 50 = 11.60 mg mL −1 , R 2 = 0.966). In vivo diabetic wound demonstrated accelerated healing (≥99% closure in 14 days) with enhanced re-epithelialization and collagen deposition, without histopathological abnormalities in major organs. These findings underscore Bio-ZnO NPs@PVA-Cs-PMMA nanofibers as an effective biomaterial with strong potential for advanced diabetic wound management.
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产品关联
DOI
PubMed
高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2026
·
IF 5.7
Xiaofan Qin,Tingting Zhang,Fufeng Yan,Jing Chen,Haiyang Dai,Yang Yang,Guilin Song,Renzhong Xue,Tao Li
Precise free volume regulation suppresses charge migration, doubling breakdown strength. • PVDF/PMMA blend films achieve a significant leap in energy storage density. • Free volume studied via positron annihilation lifetime (PAL) and simulation. Five series of PVDF/PMMA blend films were fabricated, and their energy storage performance was investigated via experimental and theoretical analyses of free volume characteristics. PMMA incorporation significantly enhances thermal stability of blend film. For instance, with 50 wt % PMMA, the glass transition temperature ( T g ) rises to 117.2 °C, much higher than that of pure PVDF (−45.2 °C). Increasing PMMA content decreases free volume size but increases its relative fraction, thereby enhancing breakdown strength and reducing material density. Although a moderate reduction in dielectric constant is observed, the marked improvement in breakdown strength leads to an overall increase in energy storage density. Specifically, at 40 wt % PMMA, the blend film achieves a maximum energy storage density of 8.13 J/cm 3 ( ƞ = 67%), substantially exceeding the 3.01 J/cm 3 ( ƞ = 67%) of pure PVDF, while exhibiting a high T g of 105.1 °C. These results highlight a synergistic effect derived from the complementary properties of the two polymers, offering an effective strategy for developing high-performance polymer-based energy storage films that combine the advantages of dipolar and linear dielectric materials.
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DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2017
·
IF 6.035
Juan Shi,Yifu Yang,Huixia Shao
A novel gel polymer electrolyte (GPE) is prepared based on the co-polymerization of vinylidene fluoride (VDF) and hexafluoropropylene (HFP), the blending of the copolymer P(VDF-HFP) with poly(ethyleneoxide) and Poly(methylmethacrylate), and the absorption of liquid electrolyte of lithium hexafluorophosphate (LiPF 6 ) in ethylene carbonate (EC) + dimethyl carbonate (DMC) (1:1 v/v) as the plasticizer . This GPE has more amorphous region, and can accommodate larger amount of liquid electrolyte via its porous structure without leakage, which provide an ionic conductivity of 0.81 mS cm −1 at 25 °C. Furthermore, the GPE possesses a high electrochemical window of 5.0 V (vs. Li/Li + ), superior thermal stability, large Li + transport number and excellent interface stability to Li metal anode . The test cells with the GPE, Li metal anode and LiCoO 2 cathode show a superior cycling stability and rate performance. This GPE is promising to be applied to rechargeable Li batteries with high safety and long cycle life.
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DOI
高影响因子
PLASMA CHEMISTRY AND PLASMA PROCESSING
·
2011
·Vol. 31
·期 6
·811-825
·
IF 1.798
Wei Yanlin,Chen Yashao,Liu Peng,Gao Qiang,Sun Yu,Huang Changzheng
To improve application of hydrophobic polymethyl methacrylate intraocular lens (PMMA IOL) in a convenient and continuous way, 2-hydroxyethyl methacrylate (HEMA) was immobilized by dielectric barrier discharge plasma at relatively high pressure. The hydrophilicity and topography of the modified IOL surface were comprehensively evaluated by contact angle and atomic force microscopy, while the surface biocompatibility of the modified IOL was investigated by platelets adhesion and cells proliferation experiments. The results revealed that the hydrophilicity of the HEMA- g -PMMA IOL samples were significantly and permanently improved. Less platelets attachment was observed on the modified IOL, especially in the HEMA 2 - g -PMMA IOL group (with 1.65 × 10 −1 mol/L HEMA concentration), which also suppressed the proliferation of cells.
研究领域:
生物材料学
·
眼科学
·
表面科学
·
生物医学工程
·
纳米医学
✓ 已验证
DOI
高影响因子
Nanoscale
·
2014
·Vol. 6
·期 16
·9713-9719
·
IF 6.739
Lili Tao,Hui Long,Bo Zhou,Siu Fung Yu,Shu Ping Lau,Yang Chai,Kin Hung Fung,Yuen Hong Tsang,Jianquan Yao,Degang Xu
Due to the relatively weak van der Waals (VDW) force between interlayers, few-layer MoS2 nanosheets are prepared using a simple ultrasonic exfoliation method and incorporated into PMMA. The good nonlinear optical (NLO) property of the MoS2/PMMA composite for the nanosecond pulsed laser at both 532 and 1064 nm has been first reported. The size, thickness and atomic structure of MoS2 nanosheets have been characterized by transmission electron microscopy (TEM) and atomic force microscopy (AFM). The interesting dependence of interlayer separation with respect to the layer number of MoS2 has been successfully quantified. The average interlayer separation of the MoS2 nanosheets increases and deviates much from the theoretical value with reducing the layer number. Such few-layer MoS2 nanosheets have been homogeneously incorporated into solid-state PMMA, which shows low optical limiting thresholds, 0.4 and 1.3 J cm−2, and low limiting differential transmittance (TC), 2% and 3% for the nanosecond laser operating at 532 nm and 1064 nm, respectively. The results suggest that MoS2 nanosheet incorporated PMMA is a promising candidate of the solid NLO material for optical limiting applications.
研究领域:
材料科学
·
纳米光子学
·
非线性光学
·
二维材料
✓ 已验证
DOI
高影响因子
OPTICS AND LASERS IN ENGINEERING
·
2019
·
IF 4.059
Jiang Li,Wenjun Wang,Xuesong Mei,Aifei Pan,Bin Liu,Jianlei Cui
Microlens arrays were fabricated on polymethyl methacrylate (PMMA) substrate using a microlens array (MLA) with rear-side ps laser swelling in this study. The modified beam energy can ensure the fabricated microlenses are uniform. Using the foci of a microlens array (MLA), approximately 630 microlenses were fabricated with a single series of pulses, which provides greater processing throughput compared to point-to-point direct laser writing . The formation of smooth microlenses is attributed to photolysis of methyl red (MR) and molecular relaxation . The dependence of height and diameter of the microlenses on laser fluence and irradiation time were investigated. The results show that the size of microlenses could be controlled using the appropriate fluence and irradiation time. Finally, an array of mirolenses with high uniformity was fabricated over a large area. The diameter and height of the microlenses were measured to be 55 and 12 µm, respectively.
研究领域:
光学制造
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）