COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
·
IF 4.9
Yinchun Fang,Peng Yan,Qin Zhang,Xinhua Liu
Structural colors forming by photonic crystal microspheres as a novel coloring method has received more and more attention in many fields. However, photonic crystal polymer microspheres usually do not have special functions, which limits their application. In this study, a novel polymer photonic crystal microspheres of poly (hexafluorobutyl methacrylate-co-glycidyl methacrylate) (P(HFBMA-co-GMA)) containing hydrophobic functional groups and reactive epoxy groups were synthesized. The structural colorized cotton fabrics with Janus characteristic of different colors and different hydrophilicity of two sides were prepared by spraying the functional P(HFBMA-co-GMA) microspheres on the polydopamine (PDA) modified cotton fabrics. P(HFBMA-co-GMA) microspheres can self-assemble into amorphous photonic crystals (APCs) with long-range disordered and short-range ordered on PDA modified cotton fabrics, showing crack-free and bright structural colors. The Janus structural colorized cotton fabrics with four different colors were obtained by spraying the P(HFBMA-co-GMA) microspheres with different particle diameters which were prepared by changing the molar ratios of HFBMA and GMA. The Janus structural colorized cotton fabrics have excellent flexibility, air permeability and colorfastness showing a good application prospect in functional textiles. This research provides a new strategy to prepare the functional structural color fabrics with Janus characteristic based on the synthesis of the functional polymer microspheres.
研究领域:
材料科学
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纺织工程
·
化学工程
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高影响因子
MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 7
·1-12
·
IF 5.3
Wang Long,Zhao Lingfan,Xu Liqing,Shen Yufei,Yuan Yajuan,Ge Na,Yang Xujin,Ge Wupeng
A novel magnetic solid-phase extraction (MSPE) material, ferroferric oxide@UIO-66@ glycidyl methacrylate (Fe 3 O 4 @UIO-66@GMA), was developed for the rapid and efficient enrichment and detection of aflatoxin B1 (AFB1) in feed samples. The Fe 3 O 4 core provides magnetic properties for easy separation, while UIO-66, a zirconium-based metal–organic framework (MOF), offers a high surface area and abundant active sites for adsorption. The introduction of GMA enhances the interaction between the target toxin and the adsorbent material, improving the selectivity and sensitivity of the extraction process. Under optimized conditions, Fe 3 O 4 @UIO-66@GMA exhibited unparalleled adsorption performance, achieving efficient adsorption of AFB1 within 15 min and demonstrating an adsorption capacity as high as 18.51 mg/g. More importantly, spike recovery experiments indicated that this novel material could effectively enrich and detect AFB1 in complex feed matrices, providing a promising approach for AFB1 monitoring in the food and feed industry. Graphical
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高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2018
·Vol. 32
·期 12
·e4534
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IF 3.581
Mingliang Ma,Yuying Yang,Renjun Feng,Li Jia,Guopeng Chen,Wenting Li,Ping Lyu
A highly effective and stable hollow Fe 3 O 4 /P(GMA-EGDMA)-SO 3 H/Au-PPy catalyst was prepared. Monodisperse hollow Fe 3 O 4 microspheres were synthesized using a hydrothermal method. As the catalyst support, magnetic hollow Fe 3 O 4 /P(GMA-EGDMA) microspheres with core–shell structure were prepared by distillation precipitation polymerization. Then sulfonic acid groups (─SO 3 H) were introduced into the surface of the support by surface modification. Au 3+ could be adsorbed by coordination with ─SO 3 H and underwent redox reactions with added pyrrole monomers. Finally, an Au–polypyrrole (PPy) layer was formed on the surface of the Fe 3 O 4 /P(GMA-EGDMA)-SO 3 H microspheres. The synthesized material was characterized using various techniques. Results indicated that the as-prepared hollow Fe 3 O 4 /P(GMA-EGDMA)-SO 3 H/Au-PPy catalyst had excellent catalytic activity and exhibited reusability for the reduction reaction of 4-nitrophenol. In addition, the catalyst was reusable for at least ten successive cycles.
研究领域:
材料科学
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催化化学
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高影响因子
JOURNAL OF POLYMER SCIENCE
·
2023
·Vol. 61
·期 12
·1150-1161
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IF 3.4
Liu Yan,Lan Xu
A novel amphiphilic photoreactive block copolymer was synthesized by electrochemically mediated atom transfer radical polymerization (eATRP) of glycidyl methacrylate (GMA), N -vinyl carbazole (VK) with polyethylene glycol-based initiator (PEG-Br). And then the double bond and the boric acid group were introduced through the epoxy group. Fluorescent molecularly imprinted nanoparticles (nano-FMIPs) were prepared using self-assembly imprinting technology with PEG-b-P(GMA-co-VK) as a functional monomer and sialic acid (SA) as a template molecule. The nano-FMIPs prepared by this method have the advantages of uniform size and small particle size, which greatly improves their recognition performance. It is found that the SA template can significantly quench the fluorescence intensity of nano-FMIPs linearly within a concentration range of 4 × 10 −4 –4 × 10 −6 mol L −1 , which is well described by Stern–Volmer equation. The nano-FMIPs can selectively and sensitively detect down to 2.9 μM of SA concentration. This study provides a new and general strategy for the preparation of nano-MIPs with high selective recognition ability in aqueous media, which has good application prospects in biomedicine. Graphical
研究领域:
材料科学
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生物医学工程
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分析化学
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高影响因子
Materials Today Bio
·
2024
·
IF 8.7
Deguang Wu,Jian Li,Chengxinqiao Wang,Zhiwen Su,Hao Su,Yan Chen,Bo Yu
Transforming growth factor-β1 (TGF-β1) is essential for cartilage regeneration, but its susceptibility to enzymatic denaturation and high cost limit its application. Herein, we report Ac-LIANAKGFEFEFKFK-NH 2 (LKP), a self-assembled peptide nanofiber hydrogel that can mimic the function of TGF-β1. The LKP hydrogel is simple to synthesize, and in vitro experiments confirmed its good biocompatibility and cartilage-promoting ability. However, LKP hydrogels suffer from poor mechanical properties and are prone to fragmentation; therefore, we prepared a series of injectable hydrogel composite scaffolds (SF-GMA/LKP) by combining LKP with glycidyl methacrylate (GMA)-modified silk fibroin (SF). SF-GMA/LKP composite scaffolds instantaneously induced in-situ filling of cartilage defects and, at the same time, relied on the interaction between LKP and SF-GMA interaction to prolong the duration of action of LKP. The SF-GMA/LKP10 and SF-GMA/LKP20 composite scaffolds had the best effect on neocartilage and subchondral bone reconstruction. This composite hydrogel scaffold can be used for high-quality cartilage repair.
研究领域:
生物材料
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组织工程
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再生医学
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PubMed
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
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2023
·Vol. 25
·期 47
·32482-32492
·
IF 3.3
Shuo Zheng,Xuanchen Zhao,Junhao Xie,Shulin Sun
Polymer-based dielectric materials have been used in film capacitors due to their rapid charge–discharge rate, lightness, and low cost. Nevertheless, the energy storage properties of these dielectric films were limited by their weak polarization ability and low discharge energy density. Herein, the solution casting method was used to prepare all-organic crosslinked composite films using linear methyl methacrylate-co-glycidyl methacrylate (MG) as the matrix and ferroelectric poly(vinylidene fluoride) (PVDF) as the organic filler. The crosslinked MG networks can enhance the breakdown strength, restrain dielectric loss, and keep high discharge efficiency. What's more, the presence of PVDF can compensate for the low electrical displacement, improve the permittivity, and overcome the brittleness of the crosslinked films. The optimal all-organic crosslinked dielectric film exhibited an ultrahigh breakdown strength of 800 MV m−1 and a high efficiency of 77.4%. The maximum energy density of the composite film reached up to 12.1 J cm−3, which was nearly 120% higher than the energy density of 5.6 J cm−3 of the pure MG film. The enhancement in energy storage properties is ascribed to the synergistic effects of chemical crosslinking and hydrogen bonding. This study offers a feasible method for all-organic polymer films to fabricate energy storage equipment.
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PROGRESS IN ORGANIC COATINGS
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2021
·
IF 5.161
Xinhua Liu,Hailong Liu,Hongliang Zheng,Yinchun Fang
Structural colors originating from melanin in nature have attracted great attention in recent years. Structural colorization is an eco-friendly dyeing method which may be a substitute of the traditional highly polluting dyeing method. In this study, the structural color originating from biomimetic melanin-like polydopamine (PDA) nanofilm coating on flexible silk fabric and its color performance have been studied. Five different bright structural colors were obtained through the different polymerization reaction time of PDA nanofilm coating. However, the prepared structural colors nanofilm coating exist cracking and poor colorfastness due to the capillary tension during the formation of PDA film and the weak interaction with fabric substrate. P(GMA-co-PEGMA) copolymer containing reactive epoxy groups was used to improve the interface bonding strength between PDA film and substrate by forming covalent bond. The introducing covalent bond will be beneficial for the improving interface bonding strength, thus to obtain high colorfastness structural color coating. This research would provide experimental basis for the fabrication of crack-free and high colorfastness structural color coating originating from biomimetic melanin-like PDA nanofilm which would achieve the application in textile colorization.
研究领域:
材料科学
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纺织工程
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纳米技术
·
色彩科学
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高影响因子
DENTAL MATERIALS
·
2019
·
IF 4.44
Lei Li,Dan Li,Wenwen Zhao,Qing Cai,Gang Li,Yunhua Yu,Xiaoping Yang
Objective The object is to find an easy but efficient way to illustrate the in-situ dispersion of nano-scaled one-dimensional fillers in composite resins, and to correlate their dispersion status with the properties of composite resins. Methods Fluorescent europium-doped hydroxyapatite nanowires (HANW:Eu) were synthesized via the hydrothermal method . The HANW:Eu was mixed into Bis-GMA/TEGDMA (60/40, w/w) at different contents (1–5 wt.%), and different processing methods (kneading, grinding, stirring) were tested to achieve good dispersion of HANW:Eu with the aid of fluorescent imaging system. Then, the mixtures of HANW:Eu and barium glass powder (BaGP) were kneaded into resin at a fixed content (70 wt.%) while at different mixing ratios. In addition to the 3D fluorescent imaging, characterizations were carried out on mechanical properties , fractured surface, wear resistance and polymerization shrinkage, to correlate the composite properties of with the dispersion status of the incorporated HANW:Eu. Results By doping calcium with 5 mol.% of europium , the obtained HANW:Eu displayed strong fluorescence, which made the illustration of its in-situ dispersion status within composites being possible. And this helped to judge that kneading was more efficient to homogeneously disperse HANW:Eu than grinding and stirring. However, it was illustrated vividly that HANW:Eu aggregated severely when it was co-incorporated with BaGP into composites at the total content of 70 wt.%, which had not been previously revealed by other microscope observations. In comparison with composites containing 70 wt.% of BaGP, improvements in the mechanical properties of resulting composites were identified for the cases containing 3 wt.% of HANW and 67 wt.% of BaGP, however, their wear volume loss and the polymerization shrinkage did not decrease as expected due to the HANW aggregations. Significance The fluorescent filler prepared in this study provides a feasible strategy to illustrate the in-situ dispersion status of inorganic fillers, which provides guidance for the processing of composite resins.
研究领域:
材料科学
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纳米技术
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牙科材料
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高分子科学
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
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2024
·
IF 3.2
Song Guo,Shao-hua Luo,Xiaolong Li,Zihan Wang,Xian Zhang,Xuefei Lei,Sheng-xue Yan
This investigation focused on the contribution of various silane blends, used as coupling agents, to the ultimate performance of dental nanocomposite dimethacrylate photocurable resins . Initially, the surface of silica nanospheres was silanized with three different silane coupling agents : γ-MPS, APTES , and OTMS, with the grafting rate serving as the index. Fourier Transform infrared (FTIR) spectroscopy and thermogravimetric analysis (TGA) verified the modification of nanosilica . Through orthogonal test experiments on the three silane coupling agents, the optimal modifier concentration, temperature, and time were determined. Subsequently, 15 wt% organomodified SiO 2 nanospheres were incorporated into Bis-GMA/TEGDMA (70/30 by wt%) based resins via a photocuring process. Scanning electron microscopy (SEM) findings revealed a relatively vague interface between inorganic fillers and resins in the polymer composite , especially when reactive silanes like γ-MPS and their corresponding blends were used. The combination of SiO 2 and γ-MPS functional silane blend provided the highest flexural properties and the lowest solubility after storing the nanocomposite in water for 1 week at 37 °C. With these methods, composite resins containing 15 wt% MPS-SiO 2 nanospheres in a Bis-GMA/TEGDMA (70/30 by wt%) mixture exhibited the best comprehensive properties, making them a promising choice for achieving long-term durable restorations in clinical therapies.
研究领域:
材料科学
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牙科医学
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DOI
高影响因子
JOURNAL OF DENTISTRY
·
2020
·
IF 3.242
Jiaxue Yang,Jiadi Shen,Xinyi Wu,Feng He,Haifeng Xie,Chen Chen
Objectives This study investigated the effects of the surface conditioning of nano-zirconia fillers with 10-methacryloyloxydecyl dihydrogen phosphate (MDP) and dipentaerythritol penta-acrylate phosphate (PENTA) on the degree of conversion and mechanical properties of Bis-GMA- and UDMA-based resin composites containing the fillers. Methods MDP or PENTA conditioned nano-zirconia fillers were characterized by Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). The conditioned nano-zirconia fillers were then used to prepare Bis-GMA- and UDMA-based resin composites. The bending strength and elastic modulus of the prepared composites were evaluated, and Weibull analysis was adopted to evaluate the reliability of the bending tests. Degree of conversion (DC) was measured by FTIR. Results FTIR and XPS analysis confirmed formation of Zr O P bonds in the MDP-conditioned and PENTA-conditioned zirconia fillers. MDP-conditioning and PENTA-conditioning increased bending strength of Bis-GMA-based composites (100.70 ± 7.15 MPa, 98.65 ± 4.76 Mpa) and UDMA-based composites (99.02 ± 4.45 MPa, 99.92 ± 5.78 MPa) compared to the groups with untreated nano-zirconia fillers (Bis-GMA-based, 84.98 ± 5.13 MPa; UDMA-based, 88.24 ± 4.61 MPa). The same trend was observed for the Weibull modulus ( m ) and elastic modulus. The MDP/PENTA conditioning did not affect the DC of the composites. Conclusion MDP or PENTA conditioning of nano-zirconia fillers improved the mechanical properties of the composite compared to the composites containing untreated nano-zirconia fillers; however, it did not affect DC. Clinical significance Mixing MDP- or PENTA-conditioned nano-zirconia fillers directly with gamma-MPS-conditioned silica to the resin composite has the potential to improve the composite’s mechanical properties.
研究领域:
牙科材料学
·
高分子化学
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PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2011
·
IF 2.13
Xiao-Jie Song,Jun Hu,Chang-Chun Wang
Poly(St/DVB/GMA) nanospheres (PNs) were prepared by soap-free emulsion polymerization and the surfaces of the PNs were further functionalized by the thiol-epoxy “click-chemistry” of surface pendant epoxy groups with functional thiols. A variety of functional groups were successfully grafted to the PNs surfaces at high densities as exemplified by the reactions with 2-aminoethanethiol, thioglycolic acid, and 2-mercaptoethanol. All the reactions were easily controlled and the modified polymer nanospheres were well-dispersed in water. Very high surface charges were observed for the 2-aminoethanethiol and thioglycolic acid modified PNs in water, a manifestation of the high surface grafting densities of the ionizable groups. The adsorptions of acid orange and toluidine blue to, respectively, the 2-aminoethanethiol and thioglycolic acid functionalized PNs were examined, which fitted well to the Langmuir isotherm model. For the 2-aminoethanethiol modified PNs, the surface amino group density was found to be 1.1 mequiv/g, with an adsorption capacity of 398 mg/g of acid orange; while the thioglycolic acid modified PNs displayed 1.4 mequiv/g carboxylate groups and an adsorption capacity of 416 mg/g for toluidine blue. The new synthetic method appears to be general in scope and adaptive to a variety of surface functionalities and potential applications.
研究领域:
材料科学
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化学工程
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环境科学
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2018
·Vol. 54
·期 7
·5865-5876
·
IF 2.993
Zhou Zhao-Xi,Li Yue-Wei,Zheng Yang-Qing,Luo Zhen,Gong Cui-Ran,Xu Ying,Wu Li-Xin
The adipic acid glycidyl methacrylate (AA-GMA) containing double bond of carbon and hydroxyl as an ultraviolet-polyurethane dual-curing oligomer was prepared as a precursor to resin for three-dimensional (3D) printing. A dual-curing resin for 3D printing was formulated from the AA-GMA, PHDI (hexamethylene diisocyanate-based polyisocyanates, mainly trimer) and other reagents. The dual-curing oligomer AA-GMA was synthesized by the epoxide ring-opening reaction with dicarboxylic acid and the molecular structure of which was characterized by FTIR and 1 H NMR analyses. AA-GMA has the double bond which could be cured via ultraviolet irradiation in the 3D printing process, and the hydroxyl could be cured by PU curing agent PHDI at the thermal post-curing process. The PHDI was not only employed as a diluent in the 3D printing process, but also acted as a reactant for post-curing. Compared to the traditional single-curing resin, this dual-curing resin could provide products with increased crosslinking density, flexibility and reduced volumetric shrinkage rate. The tensile strength of dual-curing sample was improved to 64 MPa after adding 20 wt% PHDI, which showed 18% boost compared to the sample without the PHDI. For the sample with a content of 30 wt% PHDI, the glass transition temperature ( T g ) was about 121 °C, presenting 35 °C higher than that of the blank sample.
研究领域:
材料科学
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化学工程
·
高分子科学
·
3D打印技术
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高影响因子
危险品化学品经营许可证（带存储）