Coatings
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2023
·Vol. 13
·期 7
·1145
·
IF 3.4
Shuanqiang Yang,Zhenzhen Jia,Jinjia Xu,Ruoyu Hong
High-performance coating could be used to protect steels in engineering. The GPTMS-TEOS hybrid coatings were successfully prepared using (3-glycidoxypropyl) trimethoxysilane (GPTMS) and tetraethylorthosilicate (TEOS) as reaction raw materials and diethylenetriamine (DETA) as both a curing agent and catalyst at room temperature. The hybrid coating contained amorphous SiO2and was characterized by means of X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The DETA content of the hybrid coating has a significant impact on the performance of the coating. As the DETA content increases, the thermal stability of the hybrid coating increases at 400–600 °C due to the production of more SiO2in the amine-rich state. However, the gelation time decreases dramatically, preventing the hybrid coating from better infiltrating the surface of the steel substrate. In addition, there are not enough silicon hydroxyl groups to bond with the hydroxyl groups on the surface of carbon steel and adhesion is significantly reduced. Therefore, hybrid coatings with a moderate DETA content (NH:epoxy ratio equivalent to 1:1) show the best corrosion resistance, with a third-order magnitude increase in corrosion resistance compared to that of carbon steel.Keywords:GPTMS-TEOS;hybrid coatings;amorphous SiO2;anti-corrosion coatings
研究领域:
材料科学
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腐蚀与防护
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高影响因子
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
·
2020
·Vol. 94
·期 3
·671-680
·
IF 2.008
Huang Xuelin,Ke Rui,Dong Yinsheng
A hybrid organic–inorganic sol–gel coating was prepared on the surface of cast aluminum–silicon (Al–Si) alloy via dip coating method to improve the anticorrosion ability. In the present work, bis(triethoxysilyl) ethane (BTSE) and 3-glycidoxypropyl-trimethoxysilane (GPTMS) were employed as the precursors to prepare hybrid sol–gel (BG) coating. Nano titanium dioxide (nano-TiO 2 ) was introduced to improve the corrosion resistance of the coating. The microstructures of the BG/nano-TiO 2 (BG-T) coating was characterized by scanning electron microscopy (SEM), energy dispersive spectrometer (EDS), and Fourier-transform infrared (FT-IR) spectroscopy. The results showed that there was a chemical reaction between nano-TiO 2 and BG coating and a complete defect-free coating formed on the surface of Al–Si alloy. Moreover, there were a few only minor cracks appeared on the surface of BG-T coating after 15 days immersion in 3.5 wt.% NaCl solution. The corrosion resistant performances of the coatings were evaluated by the electrochemical tests. The results showed that the nano-TiO 2 particles elevated the corrosion potential and depressed the corrosion current, thereby improved the corrosion resistance. The long-term immersion tests of BG and BG-T coating further showed that the BG-T coating possesses an excellent long-term stability for corrosion protection.
研究领域:
材料科学
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腐蚀与防护
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DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2023
·
IF 6.2
Ya-Qian Wang,Li Li,Jin Yin,Xu Yu,Xiaowei Wu,Li Xu
In this study, silane reagents were for the first time explored as the fluorescence sensitizer. They were demonstrated to have fluorescence sensitization effect on curcumin and 3-glycidoxypropyltrimethoxysilane (GPTMS) possessed the strongest effect. Thus, GPTMS was adopted as the novel fluorescence sensitizer to turn on the fluorescence of curcumin by more than two orders of magnitude for detection. In this way, curcumin could be determined with a linear range of 0.2–2000 ng/mL and an LOD of 0.067 ng/mL. The method was applicable to determine curcumin in several actual food samples, which had the good consistency with the high performance liquid chromatographic method, demonstrating the high accuracy of the proposed method. In addition, the curcumins sensitized by GPTMS could be cured under certain conditions and held the potential for solid fluorescence application. This study expanded the scope of fluorescence sensitizer to silane reagents, and provided the novel approach for fluorescence detection of curcumin and further to generate new solid fluorescence system.
研究领域:
分析化学
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食品科学
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生物化学
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PubMed
高影响因子
POLYMER BULLETIN
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2020
·Vol. 78
·期 1
·335-358
·
IF 2.014
Yuan Haikuan,Wang Chengchong,Liu Xiaodi,Lu Jie
In order to ameliorate the trade-off effect in pervaporation process and to reduce the micro-phase separation of hybrid membrane, polyvinyl alcohol (PVA)-perfluorosulfonic acid (PFSA) blending materials were modified by two inorganic components to prepare PVA-PFSA-Si hybrid membrane. PVA-PFSA-Si membrane was characterized by Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), contact angle measurements, scanning electron microscopy (SEM), positron annihilation lifetime spectrometer (PALS) and swelling measurements. As a second inorganic modifier, the effect of γ-glycidyloxypropyl trimethoxysilane (GPTMS) on the morphology of hybrid membrane was better than that of γ-aminopropyl triethoxysilane (APTEOS). PVA-PFSA-Si/polyacrylonitrile (PAN) composite membrane was used to pervaporatively dehydrate ethyl acetate (EAc)/H 2 O binary, EAc/ethanol (EtOH)/H 2 O ternary EAc/acetic acid (HAc)/EtOH/H 2 O quaternary solutions. At feed temperature of 40 °C, M8 membrane had the permeation fluxes ( J ) of 262.7, 215.2 and 182.6 g m −2 h −1 and the separation factors ( α ) of 6673, 3453 and 5374 for pervaporative dehydration of EAc/H 2 O (98/2, wt%) binary, EAc/EtOH/H 2 O (96/2/2, wt%) ternary and EAc/HAc/EtOH/H 2 O (96/1/1/2, wt%) quaternary solutions, respectively. The pervaporative results showed that PVA-PFSA-Si membrane had the excellent dehydration performances for EAc binary or multicomponent aqueous solutions.
研究领域:
材料科学
·
化学工程
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
·
IF 9.4
Kaibo Pan,Xiaoyu Wei,Zhicheng Zhu,Chongming Liu,Bai Yang
Hydrophilic coating can prevent surface from fogging but its application is limited by low mechanical performance. In this study, a hydrophilic coating was prepared by crosslinking the Si-doped carbonized polymer dot (Si-CPD) with 3-glycidyloxypropyltrimethoxysilane (GPTMS) and ethylene oxide (EO). The hydrophilic coating can be used as robust hydrophilic anti-fogging coating. The Si-CPD derived from ethylene diamine tetraacetic acid (EDTA) and aminopropyl oligosiloxanes (APOS) was successfully prepared via one-step hydrothermal method . Then, a resin solution was prepared by mixing Si-CPD, GPTMS and EO. Epoxy group of GPTMS and EO can react with amino group of Si-CPD. Finally, a composite coating with antifogging function can be obtained by simple heating curing. Due to the introduction of hydroxyl which derived from EO, the coating shows excellent antifogging performance. Meanwhile, the presence of inorganic component endows the coating with outstanding mechanical performance. The coating has great potential in related applications, such as optical lenses, mirrors and other transparency substrates.
研究领域:
材料科学
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化学工程
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PubMed
高影响因子
POLYMER INTERNATIONAL
·
2019
·Vol. 68
·期 8
·1411-1419
·
IF 2.433
Weining Du,Zetian Zhang,Wenwei Gao,Zhengjun Li
This work aims at investigating intensively the effects of organosilicone species and their dosage on the physicochemical and particularly the in vitro degradation properties of gelatin hybrids. We prepared various porous organosilicone modified gelatin hybrids with epoxy-polydimethylsiloxane (PDMS) and/or glycidoxypropyltrimethoxysilane (GPTMS) and further systematically investigated their degradation behaviors in simulated physiological environments. It was found that the chemical composition, thermal stability, crosslinking degree, mechanical properties and porous structure of the gelatin hybrids could be tuned by adjusting the amount of PDMS and GPTMS. More importantly, degradation rates of the gelatin hybrids were reduced with increasing content of GPTMS, implying that the degradation behaviors could be controlled by tailoring the chemical interaction between the gelatin and organosilicone moieties. In addition, gelatin hybrids modified with both PDMS and GPTMS (PGs-GE) were demonstrated as a homogeneous hybridization, and their maximum weight losses met the typical healing period of a normal skin wound. Noticeably, the P1G1-GE hybrid with PDMS to GPTMS molar ratio 1:1 exhibited appropriate weight loss, integrity of pore structure and synchronous dissolution of silicon and protein during the degradation process, indicating a homogeneous degradation behavior. Furthermore, both the original and degraded P1G1-GE hybrid exhibited favorable cytocompatibility in vitro . The findings will be helpful for further insight into the in vivo degradation of gelatin hybrids, suggesting their potential application as skin regeneration scaffolds. © 2019 Society of Chemical Industry
研究领域:
材料科学
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生物材料
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组织工程
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DOI
高影响因子
COLLOIDS AND SURFACES B-BIOINTERFACES
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2026
·
IF 5.9
Xueyan Hu,Enlian Tang,Fute Li,Ruiqi Wang,Sixian Cao,Cui Wang,Hao Wu
Functionalized dendritic MSNs with uniform size and good biocompatibility were synthesized as vaccine adjuvants. • MSN-GPTMS-CS elicits strong humoral (IgM, IgG1, IgG2b) and elevated IgG2a (cellular immunity). • MSN-GPTMS-CS overcomes aluminum adjuvant limit by eliciting coordinated humoral/cellular responses without systemic toxicity. Vaccine adjuvants are critical for enhancing immune responses. Although aluminum-based adjuvants are widely used in clinical practice and can improve immunogenicity, they exhibit significant limitations, including limited immunostimulatory capacity and difficulty in precisely controlling response quality. They primarily induce humoral immunity, show limited ability to activate cellular immunity, and are associated with potential risks of cumulative neurotoxicity. In this study, dendritic mesoporous silica nanoparticles (MSN) with uniform particle size were synthesized and subsequently functionalized with amino groups, epoxy groups, or epoxy–chitosan to generate the adjuvant systems MSN-APTES, MSN-GPTMS, and MSN-GPTMS-CS, respectively. All adjuvant formulations exhibited well-controlled physicochemical properties and favorable biocompatibility. Using ovalbumin (OVA) as a model antigen, the adjuvant activities of MSN, MSN-APTES, MSN-GPTMS, and MSN-GPTMS-CS were evaluated in mice. MSN-GPTMS-CS induced a strong IgM response by day 14 and significantly increased IgG1, IgG2a, and IgG2b titers by day 28, with humoral immunity comparable to that induced by aluminum adjuvants. The elevated IgG2a levels suggest effective activation of cellular immunity, indicating concurrent humoral and cellular immune responses, and no obvious systemic toxicity was observed. Collectively, MSN-GPTMS-CS represents a promising strategy capable of simultaneously eliciting potent humoral and cellular immune responses, thereby providing a foundation for the development of engineered adjuvant-based vaccines that induce coordinated immune activation.
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PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2023
·
IF 9.5
Sihui Li,Keming Zhang,Chenlu Liu,Xiaoting Feng,Peijin Wang,Shaofei Wang
Polymeric membranes containing polyethylene oxide (PEO) groups are promising CO 2 separation materials, but suffer from the trade-off between separation performance and mechanical strength . To overcome this challenge, we combine the merits of semi-interpenetrating polymer network and nanohybrid to maintain a high PEO loading and robust membrane structure. The membranes were prepared by introducing in-situ formed PEO networks with silica nodes into Pebax1657 to produce a semi-interpenetrating network structure. The introduced network and in situ formed silica nanoparticles reduce the chain packing efficiency of Pebax matrix to enhance the CO 2 diffusivity , while the increased PEO content enhances CO 2 solubility. Under feed gas pressure of 25 bar, nanohybrid membranes containing 40 wt% polymer network display excellent gas separation performance with CO 2 permeability of 272.8 Barrer and CO 2 /N 2 selectivity of 79.6 under mixed gas separation tests, surpassing 2008 Robeson upper bound. Moreover, the hybrid membranes showed high mechanical strength, the Young's modulus increases by 1.95 times. This strategy provides a simple route for the design of nanohybrid membranes with high separation performance as well as excellent durability.
研究领域:
材料科学
·
环境工程
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DOI
高影响因子
CORROSION SCIENCE
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2016
·
IF 5.154
Yan-Hua Liu,Xiao-Han Jin,Ji-Ming Hu
This work presents a new type of coating system based on the use of electrodeposited SiO 2 (E-SiO 2 ) film post-treated with (3-glycidoxypropyl)-trimethoxysilane (GPTMS) as the pretreatment layer. The silane-modified E-SiO 2 films take advantage of not only the highly rough and porous features provided by E-SiO 2 skeleton, but also the chemical functionalization offered by organosilane molecule. As a result, the composite pretreatment layer provides improved adhesion to the topcoat. In addition, the experimental results of electrochemical impedance spectroscopy, salt spray test, iron-dissolution measurement and the scanning vibrating electrode technique suggest that painting system constructed on GPTMS-treated E-SiO 2 films exhibits excellent corrosion performance.
研究领域:
材料科学
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腐蚀与防护
·
表面工程
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Yuxin Xu,Jiahao Zhu,Yi Zhang,Zhong Zhang,Qingwei Li,Dan Liu,Haitao Niu,Hua Zhou
Personal protective textiles showing high-performance electromagnetic wave absorption (EWA) along with multiple functions demonstrate considerable application prospects in daily life. Herein, a single-step, environmentally friendly, water-based fabrication strategy is developed to produce a durable and highly efficient EWA coating on PET fabrics, simultaneously integrating antibacterial, antistatic, and high-performance water/sweat-wicking properties. This multifunctional coating is realized through the synergistic interaction of its coating constituents including the incorporation of Co@C nanoparticles (NPs) derived from Co-based zeolitic imidazolate frameworks (ZIF-67), the in situ reduction of graphene oxide (GO) facilitated by fatty acid methyl ester ethoxylate sodium sulfonate (FMES), and the 3-glycidyloxypropyl triethoxysilane (GPTMS)-mediated cross-linking. The resulting Co@C/rGO/GPTMS-coated PET fabric exhibits excellent moisture-wicking and water adsorption capacity. Benefiting from the combined effects of conduction loss, interfacial polarization loss, and a hierarchical surface structure, it demonstrates outstanding EWA performance with an RLmin of −56.5 dB and EABmax covering the entire X-band. The incorporation of Co@C and rGO within the coating matrix imparts robust antibacterial and antistatic properties, achieving an antibacterial rate of over 99% against both Staphylococcus aureus and Escherichia coli, along with a significant reduction in static voltage to 130 V and a short half-life of merely 0.01 s.
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PubMed
高影响因子
COLLOIDS AND SURFACES B-BIOINTERFACES
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2014
·
IF 4.287
Pian Wu,Ya Fu,Kaiyong Cai
To investigate the effect of the surface gradient density of growth factor on the migration of endothelial cells (ECs), an approach to fabricate a gradient density of vascular endothelial growth factor (VEGF) onto silicon slides has been developed in this study. Our approach involves gradual injection of 3-glycidoxypropyltrimeth oxysilane (GPTMS) and then back filling with 3-triethoxysilylpropyl succinicanhydride (TESPSA) to produce a gradient density of carboxyl groups (–COOH) onto the silicon slides. The –COOH moieties were then activated for the immobilization of VEGF, which leading to a surface gradient density of VEGF. The successful formation of both carboxyl and VEGF gradient densities were confirmed by contact angle measurement, confocal laser scanning microscopy (CLSM) and X-ray photoelectron spectroscopy (XPS), respectively. The treated silicon slide displayed a gradient density of VEGF from 54 to 132 ng/cm 2 with a slope of 7.8 ng/cm 2 /mm. ECs cultured on the surface gradient density of VEGF demonstrated preferential orientation and an enhanced directional migration behavior. Up to 72% of cells migrated towards the region with high surface density of VEGF. However, the gradient density of VEGF had no significant effect on the cell migration rate. The study provides an alternative to explore chemical-directing cells migration, which is essentially important for understanding cell migration/in-growth behavior for angiogenesis involved in implant technology.
研究领域:
生物医学工程
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细胞生物学
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组织工程
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DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Hui Wen,Lizhu Liang,Nuanyuan Xu,Changkun Liu
Removing oil pollution from seawater prior to its desalination helps in saving time and cost. In this study, a novel superhydrophobic cotton fabric with photothermal effect and self-cleaning property was prepared via the incorporation of Fe 3+ -polydopamine (PDA) coating and carbon nanotubes (CNTs) on the fabric surface (termed as CF@PDA/CNT), followed by the grafting of (3-glycidyloxypropyl)trimethoxysilane (GPTMS) and octadecylamine (ODA) (termed as the CF@PDA/CNT-GPTMS-ODA). CF@PDA/CNT exhibits good desalination with photothermal conversion capability on the high-salinity water (evaporation rate > 1.11 kg/(m 2 ⋅h)), providing an effective basis for the preparation of the photothermal-assisted oil–water separator (CF@PDA/CNT-GPTMS-ODA), with which the crude oil permeation time was improved from 58 s without light to only 9 s with light, showing the pronounced contribution of the photothermal effect on the oil permeation. In addition, CF@PDA/CNT-GPTMS-ODA used in the form of oil skimmer and underwater oil absorbent demonstrates excellent oil–water separation performance (separation efficiency > 97 %). Notably, the fabric can isolate various oil phases from both pure water and simulated seawater, with separation efficiencies exceeding 97 %. This novel material offers a promising solution for addressing complex water pollution issues and introduces a potential approach for integrating photothermal conversion effect into the field of oil–water separation.
研究领域:
材料科学
·
环境工程
·
纳米技术
·
化学工程
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）