Micro & Nano Letters
·
2018
·Vol. 13
·期 7
·1011-1016
·
IF 0.841
Bin Zhang,Yujie Jiang
This work reports a novel environmentally friendly antibacterial and hydrophobic polyester [polyethylene terephthalate (PET)] fibre finished with ZnO containing quaternary ammonium compounds (QACsZnO). The results show that the QACsZnO can be coated onto the PET fibre surface, imparting perdurable antibacterial activity. It was found that the hydrophobicity and mechanical properties were improved greatly after the PET fibre was finished with QACsZnO. Additionally, the QACsZnO-finished PET fibre exhibited good antibacterial activities against Staphylococcus aureus , Escherichia coli and Bacillus subtilis . Moreover, QACsZnO-finished PET fibre was still capable of restoring its hydrophobicity, and it did not induce damage after dry-cleaning. These remarkable features of QACsZnO-finished PET fibre that were suitable for development of multi-function and textile applications on the market had increased dramatically.
研究领域:
材料科学
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纺织工程
·
微生物学
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Haishuang Zhu,Jing Li,Jin Wang,Erkang Wang
Au nanoclusters (Au NCs) with a unique size effect on the antibacterial performance provide a promising nanoprobe for developing an efficient nanomedicine. However, little progress has been made owing to the low quantum yield and poor stability of Au NCs. In this work, protamine (Prot) functionalized Au NCs (Prot/MTU-Au NCs) with high stability were achieved through a simple mixing with 6-methyl-2-thiouracil-capped Au NCs (MTU-Au NCs) due to the hydrogen bonding between 5-methyl-2-thiouracil (MTU) and the guanidine groups from Prot. Interestingly, a distinctly enhanced photoluminescence from Prot/MTU-Au NCs (ca. 28-fold) was observed due to the formation of rigid host–guest assemblies. We inferred that the cross-linked structure and supramolecular hydrogen bonds both contributed to the fluorescence enhancement and stability. The extra small size of the NCs and the efficient antibacterial capability from the capping shell of Prot encouraged us to probe its antibacterial performance systemically. It was found that the Prot/MTU-Au NCs with highly stable loading of positively charged antibacterial reagents were likely to penetrate into the bacteria and thus enhance the ability to kill both Gram-negative bacteria (Escherichia coli) and Gram-positive bacteria (multiple-resistant Staphylococcus aureus). The synergetic effect between the unique size and the capping layers enabled the minimal inhibitory concentration of the as-derived Prot/MTU-Au NCs reduced by ∼100-fold compared to that with individual Au nanoparticle. The antibacterial mechanism further revealed that membrane injury occurred and reactive oxygen species were generated after the incubation of the bacteria with Prot/MTU-Au NCs. Moreover, the highly luminescent fluorescence and positive surface charge of Prot/MTU-Au NCs could image the bacteria easily, which held great potential for imaging-guided antibacterial platform.
研究领域:
纳米医学
·
生物化学
·
材料科学
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产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2018
·
IF 5.158
Hao Yang,Qingxia Zhang,Ying Chen,Yong Huang,Fang Yang,Zhong Lu
ZnO coated fabrics have attracted wide attentions due to their antibacterial and photocatalytic self-cleaning properties. However, the photo-response of ZnO only in ultraviolet region limits its application. In this paper, ZnO/BiOBr functionalized cotton fabrics were synthesized by a facile and time-saving ultrasonic-microwave combined method. Compared with ZnO coated fabric, the photocatalytic activity of ZnO/BiOBr coated fabric under visible light irradiation was remarkably improved at no sacrifice of its antibacterial activity. Simultaneously, it also showed good resistance to bacterial adhesion and photocorrosion. The introduction of two-dimensional BiOBr nanoflakes not only enhanced the visible light absorption, but also reduced the recombination rate of electron-hole pairs, thus significantly improving the photocatalytic self-cleaning performance of the coated fabric under visible light irradiation. The ZnO/BiOBr coated cotton fabric with both antibacterial and self-cleaning functionalities may have broad application prospects in the fields of textile, medicine and chemical industry.
研究领域:
材料科学
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纺织工程
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环境科学
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产品关联
DOI
PubMed
高影响因子
RSC Advances
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2015
·Vol. 5
·期 118
·97320-97329
·
IF 3.84
Zhenjiang Yu,Yuanyuan Zhao,Bing Gao,Xuyang Liu,Liming Jia,Fangbo Zhao,Jun Ma
To improve the anti-biofouling properties of membranes, Ag-embedded nano-sized titanium dioxide (Ag-n-TiO2) particles were utilized as biocidal agents to modify polyvinyl chloride (PVC) membranes. Both Ag-n-TiO2/PVC flat sheet membranes and reinforced hollow fiber membranes were fabricated by a phase inversion method with varying Ag-n-TiO2 particle concentrations. As a result, the hydrophilicity, permeability, and retention capability increased with Ag-n-TiO2 concentrations from 0 to 1.5 wt%. In addition, the in situ antibacterial and anti-formation of biofilm properties of the modified membranes were greatly enhanced in the conventional inhibition zone test, Escherichia coli (E. coli) absorption experiment, fluorescent staining experiment, as well as long-term continuous biofouling test. The best results were obtained for the PVC membrane modified by 1.0 wt% Ag-n-TiO2. The optimized membrane presented not only better permeability and in situ antibacterial properties in the E. coli adhesion test, but also an enhancement in resisting biofilm formation and a more steady permeation flux in long-term filtration than the unmodified membrane.
研究领域:
材料科学
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环境工程
·
微生物学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2018
·
IF 3.909
Qian Zhou,Li Cui,Lamei Ren,Ping Wang,Chao Deng,Qiang Wang,Xuedong Fan
Chitooligosaccharide (COS) has the characteristic of antioxidant and antibacterial effects. To improve the properties of silk fibroin (SF), COS was enzymatically grafted onto SF membranes using a laccase from Trametes versicolor . d -Glucosamine hydrochloride (GAH) and p -hydroxyphenylacetamide (PHAD), as the model compound of COS and tyrosine residues in SF were utilized to disclose the grafting mechanism, respectively. The data from UPLC-TQD and GPC analysis implied that laccase might catalyze the oxidation of PHAD and led to the formation of self-polymerized products. FTIR and 1 H NMR results verified the occurrence of the laccase-assisted reactions between COS and PHAD. For the fibroin samples with different treatments, incubation with laccase alone led to remarkable increase in the molecular weight of SF, mainly owing to the efficient self-crosslinks of the fibroin chains. For the COS-grafted SF membrane, there was no obvious change in the thermal behavior, while the antioxidant and antibacterial properties were evidently improved when compared to that of the untreated. Meanwhile, biocompatibility of the COS grafted SF membrane was acceptable according to the cell viability of NIH/3T3 cells. The present work provides a novel method for preparation of the multifunctional fibroin-based biomaterials.
研究领域:
生物材料学
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酶工程
·
医学材料
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Peng Wang,Baoluo He,Yixuan Du,Biwen Wang,Jingde Gao,Shujuan Liu,Qian Ye,Feng Zhou
Marine corrosion and biofouling are a major issue affecting the development of the marine industry. Traditional single-function coatings, such as those that provide either antifouling or anticorrosion, cannot meet the requirements in the current hostile conditions. In our study, block copolymer-functionalized Ti 3 C 2 T x was successful prepared and employed to synthesize a nanocomposite coating with satisfactory antifouling and anticorrosion performances, in which the anticorrosion agent poly(2-mercaptobenzothiazole) (PMBTMA) was first grafted on the Ti 3 C 2 T x surface, after which the antifouling agent poly(3-sulfopropyl methacrylate potassium (PSPMA) was grafted via surface-initiated atom transfer radical polymerization (SI-ATRP), to obtain the block copolymer (PMBTMA- co -PSPMA)-functionalized Ti 3 C 2 T x (abbreviated as TMS). An appropriate corrosion protection and antifouling mechanism in the functionalized Ti 3 C 2 T x -based epoxy nanohybrid coatings is proposed. It is noteworthy that the antibacterial activity of the proposed coating stems from the synergistic bactericidal effect of Ti 3 C 2 T x and 2-mercaptobenzothiazole (MBT). The outstanding antibacterial properties of the TMS and the strong surface hydration of the anionic polymer brushes PSPMA, endow the as-prepared TMS-based nanocomposite coating (TMS/EP) with good antifouling performance (removal of more than 55% of bacteria and removal rate of microalgae up to 71%). More importantly, the TMS/EP has excellent corrosion resistance ability, which is due to the good synergistic anticorrosion barrier effect of Ti 3 C 2 T x nanosheets and the on-demand release of corrosion inhibitor MBT during the corrosion process.
研究领域:
材料科学
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海洋生物学
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化学工程
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产品关联
DOI
高影响因子
Materials
·
2023
·Vol. 16
·期 15
·5206
·
IF 3.4
Guijun Yang,Houjiang Liu,Ang Li,Tiansheng Liu,Qiqin Lu,Fang He
Titanium alloy Ti6Al4V is a commonly used bone implant material, primarily prepared as a porous material to better match the elastic modulus of human bone. However, titanium alloy is biologically inert and does not have antibacterial properties. At the same time, the porous structure with a large specific surface area also increases the risk of infection, leading to surgical failure. In this paper, we prepared three porous samples with different porosities of 60%, 75%, and 85%, respectively (for short, 3D-60, 3D-75, and 3D-85) using 3D printing technology and clarified the mechanical properties. Through tensile experiments, when the porosity was 60%, the compressive modulus was within the elastic modulus of human bone. Anodic oxidation technology carried out the surface modification of a 3D-printed porous titanium alloy with 60% porosity. Through change, the different voltages and times on the TiO2oxide layer on the 3D-printed porous titanium alloy are different, and it reveals the growth mechanism of the TiO2oxide layer on a 3D-printed unique titanium alloy. The surface hydrophilic and antibacterial properties of 3D-printed porous titanium alloy were significantly improved after modification by anodic oxidation.Keywords:Ti6Al4V porous titanium alloy;3D printing;anodic oxidation;antibacterial
研究领域:
生物医学工程
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材料科学
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产品关联
DOI
PubMed
高影响因子
Frontiers in Materials
·
2022
·
IF 3.985
Feng Yashan,Chang Lei,Zhu Shijie,Yang Yongxin,Wei Baoli,Lv Meng,Wang Jun,Guan Shaokang
The uncontrollable rapid degradation rate of the Mg alloy substrate limited its clinical application, and implant-associated infections have been reported to be the main reason for the secondary surgery of orthopedic implantation. The aim of this study was to produce a multifunctional coating on magnesium-based alloys that have improved corrosion resistance, bioactivity, and antibacterial properties through the preparation of polyelectrolytic multilayers (PEMs) consisting of chitosan (CS) and sodium hyaluronate (HA) on silane-modified strontium-substituted hydroxyapatite (hereafter referred to as Bil (SH + CS)/SrHA). The multifunctional coatings were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and X-ray photoelectron spectroscopy (XPS). The results showed the polyelectrolyte complex SH/CS layer to be uniformly and tightly attached on to the surface of silane-treated SrHA. At the same time, a potentiodynamic polarization test and hydrogen evolution test showed the Bil (SH + CS)/SrHA coatings to exhibit superior corrosion resistance than bulk Mg-based alloys. The results of the cell–surface interactions revealed Bil (SH + CS)/SrHA coatings to be in favor of cell initial adhesion and more beneficial to the proliferation and growth of cells with the processing of co-culture. In addition, antibacterial tests demonstrated the strong bactericidal effect of Bil (SH + CS)/SrHA coatings against both Escherichia coli (E. coli) and Staphylococcus (S. aureus), suggesting that Bil (SH + CS)/SrHA coatings can successfully achieve multifunctionality with enhanced corrosion resistance, biocompatibility, and antibacterial properties.
研究领域:
材料科学
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生物医学工程
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组织工程
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DOI
高影响因子
Coatings
·
2021
·Vol. 11
·期 8
·914
·
IF 2.881
Zihao Dong,Ran Li,Yan Gong
With chitosan, nano-TiO2and nano-Ag as raw materials, nano-TiO2and nano-TiO2-Ag were modified by a surface modifier-sodium laurate. Chitosan (CTS), chitosan-nano-TiO2(CTS-TiO2), and chitosan-nano-TiO2-nano-Ag (CTS-TiO2-Ag) composite materials and corresponding films were prepared by a solution co-blending method. Then, the antibacterial performances of the above three types of materials againstEscherichia coli,Staphylococcus aureus, andBacillus subtiliswere compared. Moreover, potato and strawberry weight loss rates, peroxidase activity, and vitamin C contents after different film coating treatments were measured. Compared with CTS films, the CTS-TiO2-Ag and CTS-TiO2composite films both showed better physical properties, and both demonstrated higher antibacterial effects, especially forE.coli. Measurement of physiological indices in fruits and vegetables showed that the freshness-preserving effect of CTS-TiO2-Ag coating films was the most significant. In all, the CTS-TiO2-Ag coating films can actively contribute to the storage of fruits and vegetables at room temperature, and better ensure product quality. Thus, such films are meaningful for research and development of new fruit freshness-keeping techniques and materials.
研究领域:
食品科学
·
材料科学
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DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Jiehao Du,Zengpei Guo,Xue Yan,Yiting Yao,Ruquan Zhang,Yingshan Zhou,Xin Liu,Bin Shang,Jingjing Huang,Shaojin Gu
The design of multifunctional, high-performance wearable heaters utilizing textile substrates has garnered increasing attention, particularly in the development of body temperature and health monitoring devices. However, fabricating these multifunctional wearable heaters while simultaneously ensuring flexibility, air permeability, Joule heating performance, electromagnetic interference (EMI) shielding and antibacterial properties remains a significant challenge. This study utilizes phase transition lysozyme (PTL) film-mediated electroless deposition (ELD) technology to deposit silver nanoparticles (Ag NPs) on the cotton fabrics surface in a mild aqueous solution at room temperature, thereby constructing a wearable heater with long-term stability, high conductivity, and exceptional photothermal properties. The textiles enriched with Ag NPs exhibit remarkable electrothermal and photothermal dual-driven heating capabilities, achieving temperatures exceeding 110 °C within 50s under 2 V, or in merely a few seconds through photothermal conversion. Importantly, these textiles retain the intrinsic flexibility and breathability of the textile substrate. Furthermore, the amyloid-like protein Ag NP integrated textiles demonstrate excellent antibacterial properties, and exhibit a high EMI shielding efficiency of 50 dB within the frequency range of 8.2–12.4 GHz. Therefore, these multifunctional Ag NPs wearable heaters were expected to find applications in areas such as smart wearable clothing and future health management.
研究领域:
材料科学
·
生物医学工程
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DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2019
·
IF 7.015
Liang Shen,Ming Yi,Lian Tian,Fangqian Wang,Chun Ding,Shipeng Sun,Ang Lu,Li Su,Yan Wang
Membrane-based forward osmosis (FO) technology has attracted increasing interest in the field of water treatment due to its high economical and separation efficiency. However, the availability of a FO membrane with superior separation and antifouling properties is still the critical issue for its real application in wastewater purification. In this work, novel thin-film composite (TFC) membranes are developed by surface ionization with various metal ions and subsequent metallization with the assistance of pre-grafted polyethyleneimine (PEI) and N -containing organic phosphonic acid (OPA), where the latter provides abundant and stable complexing sites. The grafting of hydrophilic PEI/OPA and the attachment of silver atoms endow the resulting membrane a dual defensive and offensive functionality associated with anti-adhesive property and antibacterial activity, respectively. Compared with the control TFC membrane, the surface-modified membranes show significantly improved anti-adhesive property against bovine serum albumin (BSA) and antibacterial property against S. aureus and E. coli bacteria, and thereby improved antifouling property towards the local lake water. Additionally, compared with the silver-metalized TFC membranes prepared by the direct method or indirect PEI binding, the silver-metalized membrane prepared by the indirect OPA binding exhibits a much higher silver loading (34.38 μg/cm 2 ), as well as better, more stable and long-term antibacterial property. Moreover, compared with the control membrane, the modified membranes also have much higher water fluxes (87–141% increase) and comparable or even lower reverse salt fluxes. The influences of the metal ion type used for ionization and the method used for metallization are systematically investigated.
研究领域:
材料科学
·
环境工程
·
水处理技术
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry B
·
2025
·
IF 5.7
Ying Hu,Mingjun Li,Xun Xu,Nan Ma,Jiahao Luo,Xiaoxuan Wu,Qixiang Ping,Xiao Lin,Tingbin Zhang,Chunyong Liang,Lei Yang
Prosthetic joint infection (PJI) remains a significant challenge in clinical applications. It not only impedes the recovery of bone tissue at the site of bone defect but also leads to multiple debridements, long-lasting antibiotic treatment and even secondary replacement. Titanium alloy Ti6Al4V (TC4) is widely used in orthopedic implants due to its excellent mechanical properties and biocompatibility; however, it lacks inherent antibacterial and osteoinductive functions. In this study, a composite coating based on polyvinyl alcohol (PVA) with tissue repair and antibacterial properties was applied on the surface of TC4. A PVA gel coating functionalized with terpyridine and catechol groups (PVA–TP–CA) was synthesized and subsequently complexed with copper (Cu) ions. The differential binding affinities of TP and CA groups to Cu enabled a sustained and controlled release of metal ions. Furthermore, a micro–nano surface structure was fabricated on TC4 using femtosecond laser technology to achieve a micro–nano structure interface and enhanced bonding strength. Biological evaluations demonstrated that the modified surface significantly improved the antibacterial, angiogenic, and osteogenic properties of TC4. These findings indicate that this multifunctional composite coating holds great promise for surface modification of orthopedic implants, offering an effective strategy for preventing PJI while promoting bone regeneration.
研究领域:
生物医学工程
·
材料科学
·
组织工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）