PROGRESS IN ORGANIC COATINGS
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2019
·
IF 3.42
Panpan Hao,Ting Zhao,Lili Wang,Shaojie Liu,Erjun Tang,Xiaodong Xu
In this paper, a linear isocyanate terminated urethane oligomer, polyethylene glycol modified isophorone diisocyanate oligomer (PEG-IPDI), was prepared by the reaction of polyethylene glycol and isophorone diisocyanate. It is mixed as a cross-linking agent with an acrylic copolymer composed of 2-ethylhexyl acrylate, butyl acrylate, methyl methacrylate, hydroxyethyl acrylate and acrylic acid to form a network pressure sensitive adhesive (PSA) through the reaction of isocyanate groups in PEG-IPDI with hydroxyl and carboxyl groups in acrylic copolymer chains. By blending this network PSA with a photo-initiator and a trifunctional acrylic monomer in a certain ratio, the UV-curable PSA was obtained. After uniformly coating it on the treated polyethylene terephthalate film, a UV-induced peelable PSA tape for a silicon wafer dicing process was prepared. The PSA network formed before UV irradiation was held together with another network produced by UV irradiation of the trifunctional acrylate monomer to give an interpenetrating network (IPN) structure. The results showed that this novel UV-curable PSA tape with IPN structure had strong peel strength before UV irradiation, and could meet the fixed requirements of silicon wafer cutting process. After UV curing, the peel strength was remarkably lowered due to the formation of IPN structure. Compared to those semi-IPN structured PSA tapes prepared with traditional multi-functional urethane acrylate oligomers, the adhesion performances of IPN structured UV peelable PSA tape prepared in this work were similar, but the remaining adhesive on the wafer after the release of the UV cured tape was greatly reduced.
研究领域:
材料科学
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粘合剂
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聚合物化学
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半导体制造
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DOI
高影响因子
Biomaterials Science
·
2019
·Vol. 7
·期 6
·2383-2393
·
IF 5.251
Wanyun Song,Xinyi Li,Yuquan Zhao,Chaoying Liu,Junying Xu,Huiyu Wang,Tao Zhang
The capture of circulating tumor cells (CTCs) plays a crucial role in the early diagnosis, personalized treatment and postoperative evaluation of malignant tumors. In this study, UV-curable coating technology was combined with antibody immobilization to enable CTC captures on poly(methyl methacrylate) (PMMA) substrates. Controlled amounts of carboxyl groups and polyethylene glycol (PEG) segments were introduced into the coating formulation to facilitate immobilization of antibodies and block non-specific protein adsorption, respectively. Then, anti-EpCAM antibodies were immobilized on functionalized, coated PMMA substrates by EDC/NHS chemistry. Multiple physical, chemical and biological properties were investigated, including hydrophilicity, protein adsorption, platelet adhesion and anticoagulant properties. Thereafter, optimized coatings were applied on the inner wall of PMMA tubes, followed by immobilization of anti-EpCAM antibodies. After perfusion of the tubes with whole blood, enriched with SGC7901 gastric cancer cells that overexpress EpCAM antigens, rapid and efficient capture of the tumor cells was observed. These results provide a basis for further development of devices for the selective capture and enrichment of CTCs, using small blood volumes.
研究领域:
生物医学工程
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癌症研究
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材料科学
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生物材料
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DOI
PubMed
高影响因子
FOOD HYDROCOLLOIDS
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2024
·
IF 11
Xiaojia Wang,Hongyu Zhu,Yina Yang,Guoqiao Lai,Xiongfa Yang
Food safety and food freshness issues have become important concerns for consumers and hydrogels with high antibacterial efficiency, low toxicity and pH−sensitive colorimetric intelligence are one of candidates to meet the requirement of food package and food spoilage monitoring. Nevertheless, hydrogels prepared only by assembling the ingredients with non−covalent interactions through time−consuming molding process usually encounter drawbacks such as relatively poor mechanical properties, stability and thermal stability, which always restrict their further applications. To overwhelm these shortcomings, UV−curable choline chloride (ChCl) and bromophenol red (BR) covalent functionalized antibacterial and pH−sensitive cross−linked hydrogels (UV−hydrogels) were developed in this paper. The UV−hydrogels possessed good thermal stability because the initiated thermal decomposition temperature (T d5 ) is in the range of 135.8–184.7 °C. The DMA analysis revealed that the UV−hydrogels are with good mechanical properties because the elongation at break is in the range of 117–525% and the tensile strength is in the range of 0.8–2.7 MPa. The UV−hydrogels with BR groups exhibited naked eye visible color variation from yellow to dark blue-green with the variation of the pH values from 2 to 14. The antibacterial efficiency of the UV−hydrogels against S . aureus , E . coli and M . albican increased with the increment of covalent−grafted ChCl amount. Cytotoxicity assay demonstrated that the UV−hydrogels are low toxicity against L929 cells. The experiment of monitoring freshness of beef denoted the UV−hydrogels have potential application in animal–derived high protein food packaging and freshness monitoring.
研究领域:
材料科学
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食品科学
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生物技术
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化学
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产品关联
DOI
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
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2025
·
IF 5.1
Shumin Jiang,Hangzhou Wang,Jun Shi,Xiaobin Li,Xiaoyan Xiong,Chenguang Kong,Cunzhi Li,Youcheng Huang,Kun Wu,Li Yang
In the semiconductor precision device processing and wafer cutting industry, products are typically etched or sliced to meet specific requirements. During this process, a novel type of adhesive is often utilized for bonding and securing purposes. After processing, some methods, such as light exposure and thermal application, can be used to make the adhesive lose its adhesiveness, so as to facilitate the peeling of the product without damaging the product. In this work, acrylate prepolymers containing photopolymerization groups were synthesized from 4-acryloyloxybenzophenone (4-ABP) and other acrylic monomers. UV-induced tack-loss of the acrylate pressure-sensitive adhesive (PSA) was achieved by blending the acrylic prepolymer with a small molecule isocyanate compound in an appropriate ratio and then coating for heat curing. It was observed that the incorporation of multifunctional isocyanate small molecule groups can enhance the overall performance of the tape. An addition amount of 0.6 wt% hexamethylene diisocyanate (HDI) was found to be more suitable than isophorone diisocyanate (IPDI), as it maintained good bonding performance and resulted in less residual glue. The increase in 4-ABP initially led to an improvement in bonding performance of the pressure sensitive adhesive tape, followed by a decrease, with an optimal addition amount of 1.2 wt%. After UV curing, the 180° peel strength of the adhesive tape measured below 1.0 N/25 mm, exhibiting the most significant decrease in peel strength and minimal residual adhesive content. This characteristic categorized it as a UV-induced tack-loss easy peeling pressure-sensitive adhesive tape. These results contribute to the further research and development of UV-induced tack-loss PSA.
研究领域:
材料科学
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聚合物化学
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胶粘剂技术
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半导体制造
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光聚合
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产品关联
DOI
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Youlan Zou,Yanhong He,Huiyao Li,Shiyan Deng,Wenhao Tang,Shuang Deng
In order to solve the problems of low ionic conductivity, low lithium-ion transference number and weak mechanical strength of PEO solid polymer electrolytes (SPEs), this paper proposes to prepare composite cross-linked network polymer electrolytes (PEO-AAEM) through UV crosslinked polymerization of allyl acetoacetate (AAEM) and N- N -methylene diacrylamide (MBA) within the PEO SPEs. The amide group within the cross-linked network facilitates the dissociation of Li + , while the carbonyl group serves as a conduit for Li + transport. The PEO-AAEM SPEs exhibit the ionic conductivity of 5.4×10 −4 S cm −1 , with a lithium-ion transference number of 0.54 at 60 °C. The assembled Li//Li battery with proper AAEM content can be stably cycled for 2000 h at 0.2 mA cm −2 current, and LiFePO 4 //Li battery maintains a reversible capacity of 100 mA h g −1 after 500 cycles at 0.2C. This work offers a viable pathway for developing SPEs with improved electrochemical performance for all solid-state lithium metal batteries (ASSLMBs).
研究领域:
材料科学
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电化学
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电池技术
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产品关联
DOI
高影响因子
LANGMUIR
·
2023
·
IF 3.9
Yuqing Fan,Yuan Zhang,Lin Sheng,Dong Chen,Yuhong Ma,Changwen Zhao,Wantai Yang
This paper proposed a novel and versatile surface modification route by integrating UV light-mediated thiol–ene “click” surface grafting polymerization and postmodification via the reactions of the surface thiol groups. At first, poly(thiol ether) layers with tunable thiol group density, up to 8.2 × 102 ea/nm3 for cross-linked grafting layers, were grafted from biaxially oriented polypropylene (BOPP) film. Then, the surface −SH groups reacted with epoxy compounds to introduce quaternary ammonium salt. With the immobilized quaternary ammonium salt and coordinated Zn2+ ions, the modified film demonstrated 99.98% antibacterial rate against Staphylococcus aureusafter soaking in DI water for 21 days and in a highly alkaline environment (0.1 M NaOH aqueous solution) for 3 days, and the surface water contact angle decreased to 39°. At last, the polymethacrylate chains were also successfully grafted from the surface thiol groups of the cross-linked poly(thiol ether) under visible light irradiation. With 2-(dimethyldodecylammonium) ethyl methacrylate as the grafting monomer, the modified BOPP film had shown a 99.99% antibacterial rate against both Escherichia coliand S. aureus. Meanwhile, with 2-methacryloxyethyl phosphoryl choline as grafting monomer, the modified surface showed an excellent antibioadhesion of living S. aureus, and the surface water contact angle was as low as 48°.
研究领域:
材料科学
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高分子化学
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表面工程
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生物医学工程
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DOI
高影响因子
ACS ES&T Water
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2025
·
IF 4.3
Qiqi Wan,Yiwei Han,Ruihua Cao,Shaolan Du,Jingyi Wang,Tinglin Huang,Gang Wen
The electrochemically driven UV light-emitting diode/chlorine (UV-LED/EC-Cl2) process represents an emerging advanced oxidation technology capable of simultaneously removing microorganisms and micropollutants, making it particularly suited for decentralized water treatment in rural areas (utilized naturally occurring Cl– in water). This research systematically investigated the removal efficiency and underlying mechanisms of the UV-LED/EC-Cl2 process for the selected microorganisms (Aspergillus niger spores) and herbicides (atrazine (ATZ) and 2,4-dichlorophenoxyacetic acid (2,4-D)). The results demonstrated a significant synergistic effect in fungal spore inactivation, primarily attributed to the generation of reactive radical species, which induced severe membrane disruption and elevated intracellular reactive oxygen species levels. Furthermore, the UV-LED/EC-Cl2 process exhibited exceptional herbicide removal efficiency, achieving over 90% degradation within 37 min. The coexistence of A. niger spores reduced the herbicide degradation efficiency by approximately 10%, with the degradation products of ATZ exhibiting increased molecular weight and toxicity. Even in actual groundwater, the UV-LED/EC-Cl2 process maintained a high removal efficiency. Additionally, the electrical energy per log removal of herbicide ranged from 18.3 to 32.5 kWh/m3-log, lower than that of the standalone processes. These findings underscore the potential of the UV-LED/EC-Cl2 process as an effective and energy-efficient solution for simultaneous microorganisms and micropollutant removal in decentralized water treatment.
研究领域:
环境工程
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水处理
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高级氧化工艺
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电化学
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微生物学
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环境科学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Mian Li,Lian-Yu Qiu,Tian-Yang Zhang,Bin Xu,Dan Yang,Ting Ye,Heng Luo
Advanced oxidation processes (AOPs) based on Fe 2+ /persulfate (PS) have been widely applied in water treatment but face critical challenges: inefficient radical utilization due to excess Fe 2+ scavenging, unsustainable reactivity from irreversible Fe 2+ -to-Fe 3+ conversion, and ambiguous dominant reactive species (e.g., SO 4 − / OH vs. high-valent iron). Ferric oxalate complexes address these limitations by enabling light-driven iron photoreduction and the Fe 2+ /Fe 3+ cycle. However, direct comparisons of degradation efficiency, mechanisms, and environmental risks between Fe 2+ /PS and UV/Fe(C 2 O 4 ) 3 3− /PS remain scarce. Using iohexol as a model, this study directly compared the two systems. The UV/Fe(C 2 O 4 ) 3 3− /PS system achieved 98.8 % iohexol degradation in 60 min (vs. 69.9 % for Fe 2+ /PS) and reduced iron sludge by 70–80 %. Both systems relied on SO 4 − and OH, but UV/Fe(C 2 O 4 ) 3 3− /PS enhanced radical yield via photocatalytic iron cycling, whereas Fe 2+ /PS depended on Fe(IV). In Fe 2+ /PS, contributions were Fe(IV) (29.4 %) > SO 4 − (25.9 %) > OH (20.2 %); in UV/Fe(C 2 O 4 ) 3 3− /PS, SO 4 − (63.6 %) > OH (23.7 %) > Fe(IV) (23.7 %). Electrical energy per order (EE/O) analysis showed UV/Fe(C 2 O 4 ) 3 3− /PS consumed 1.166 kWh mM −1 , 60.2 % lower than Fe 2+ /PS (2.524 kWh mM −1 ). Acute toxicity tests with Vibrio fischeri exhibited 67.7 % inhibition in Fe 2+ /PS, significantly higher than 36.4 % in UV/Fe(C 2 O 4 ) 3 3− /PS. Ecological Structure-Activity Relationships (ECOSAR) modeling and disinfection by-products (DBPs) risk assessment further confirmed lower risks in UV/Fe(C 2 O 4 ) 3 3− /PS, with 50 % lethal concentration ((LC 50 ) for aquatic organisms 2.3-fold higher and genotoxicity potency 41.7 % lower than Fe 2+ /PS. These results bridge the efficiency-risk gap between the two systems and offer a three-dimensional (efficiency-cost-safety) framework for AOP selection.
研究领域:
环境工程
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水处理
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化学氧化
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毒理学
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自由基化学
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污染控制
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高级氧化工艺
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能源效率
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产品关联
DOI
高影响因子
Heliyon
·
2023
·
IF 4
Hengyi Yu,Dongyan Li,Dong Xiang,Xiping Li,Lu Liu,Dong Liu,Xuepeng Gong
A rapid, specific and accurate high-performance liquid chromatography with tunable ultraviolet detection method was developed to simultaneously determine azathioprine metabolites, 6-thioguanine nucleotides (6-TGN) and 6-methyl mercaptopurine riboside (6-MMPr) in human red blood cells. Erythrocyte lysate sample was precipitated by perchloric acid under the protection of dithiothreitol, with 6-TGN and 6-MMPr being acid hydrolyzed to produce 6-thioguanine (6-TG) and 6-methymercaptopurine (6-MMP). A Waters Cortecs C 18 column (2.1 × 150 mm, 2.7 μm) was used for chromatographic separation with a water (containing 0.01 mol/L ammonium acetate and 0.2% acetic acid)/methanol linear gradient at a flow rate of 0.45 mL/min in a 5.5 min. UV detection wavelengths were 340 nm for 6-TG, 303 nm for 6-MMP and the IS (5-bromouracil). The calibration curves fitted a least squares model (weighed 1/ x 2 ) from 0.15 to 15 μmol/L for 6-TG ( r 2 = 0.9999) and from 1 to 100 μmol/L for 6-MMP ( r 2 = 0.9998). This method was validated according to the FDA bioanalytical method validation guidance and ICH M10 bioanalytical method validation and study sample analysis guidance for industry, and successfully utilized in ten IBD patients receiving azathioprine therapy.
研究领域:
药理学
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分析化学
·
临床化学
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DOI
PubMed
高影响因子
Nanomaterials
·
2021
·Vol. 11
·期 12
·3192
·
IF 5.076
Hao Xu,Liangjing Zhang,Aiwu Wang,Juan Hou,Xuhong Guo
Photochromic materials have attracted increasing attention. Here, we report a novel photo-reversible color switching system based on oxygen-vacancy-engineered MoOxnanostructures with water/N-methyl-2-pyrrolidone (NMP) as solvents. In this work, the system rapidly changed from colorless to blue under UV irradiation (360–400 nm) and slowly recovered its colorless state under visible light irradiation. The obtained oxygen vacancy-engineered MoOxnanostructures exhibited good repeatability, chemical stability, and cycling stability. Upon UV light irradiation, H+was intercalated into layered MoOxnanostructures and the Mo6+concentration in the HxMoOxdecreased, while the Mo5+concentration increased and increased oxygen vacancies changed the color to blue. Then, it recovered its original color slowly without UV light irradiation. What is more, the system was highly sensitive to UV light even on cloudy days. Compared with other reported photochromic materials, the system in this study has the advantage of facile preparation and provides new insights for the development of photochromic materials without dyes.
研究领域:
材料科学
·
化学
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DOI
高影响因子
Desalination and Water Treatment
·
2015
·
IF 1.173
Lu Mao,Jiaojun Shen,Xiaoliang Ma,Zhonghui Lan,Xu Zhang
Photocatalytic degradation of 2,4-dinitrophenol in two commercial TiO2 (Degussa P25 and Hombikat UV-100) was investigated in this work. The properties of two TiO2 were systematically studied and described in detail. The observed photoactivity of Degussa P25 was 6–12 times higher than Hombikat UV-100 although the specific surface area of Hombikat UV-100 was 5.7 times more than that of Degussa P25. The photodegradation of 2,4-dinitrophenol was favored at neutral pH in Degussa P25, while its degradation was preferred at pH 3.0 in Hombikat UV-100 dispersion. The observed kinetic constant (kobs) for the photodegradation of 2,4-dinitrophenol in 20 mg/L humic acid solution was found to be 15% (Degussa P25) and 21% (Hombikat UV-100) of the values obtained from the corresponding pure aquatic solutions. The suppression effects of β-cyclodextrin on the photodegradation of 2,4-dinitrophenol over Degussa P25 (50%) was much more significant than that of Hombikat UV-100 because of the different adsorption behavior of β-cyclodextrin over two TiO2. Hydroxyl radical and valance band hole was found to be the predominant reactant during the degradation of 2,4-dinitrophenol using P25 and UV-100, respectively. Formic acid, acetic acid, oxalic acid, and were detected as advanced oxidation products.
研究领域:
环境科学
·
化学工程
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DOI
高影响因子
MOLECULES
·
2020
·Vol. 25
·期 6
·1415
·
IF 3.267
Rui Song,Qincheng Chen,Lili Yan,Pinhua Rao,Peng Sun,Lumei Wang,Guoqing Shen
Antibiotics and hormones widely exist in fertilizers and manures, which are excessively used in agriculture and animal husbandry. Considering their potential harm to the environment and human health, the detection of antibiotics and hormones has become a necessity. However, current methods find it difficult to simultaneously extract and detect antibiotics and hormones in soil and to maintain a high level of accuracy and a low cost. In this study, a straightforward, convenient, and simultaneous extraction and detection method of a representative antibiotic (sulfamethoxazole, SMZ) and hormone (17β-Estradiol, E2) in soil has been established. Ultrasound-assisted extraction (UAE) was used in the pretreatment process and high-performance liquid chromatography with the ultraviolet detector (HPLC-UV) method was then chosen in the detection process. By means of single factors and response surface experiments, optimal extraction conditions were a 41-mL buffer solution (pH 4.27) mixed with 1 g of soil sample, an ultrasonication time of 36 min, an ultrasonication temperature of 25 °C, and two extraction cycles. The detection limits of 0.3–10 μg/kg and quantification limits of 1–30 μg/kg have been obtained. Finally, the optimized simultaneous extraction and detection method was validated by three different real soil samples with recoveries ranging from 79.49% to 86.47%.Keywords:antibiotics;hormone;ultrasound-assisted extraction;HPLC-UV;response surface methodology
研究领域:
环境科学
·
分析化学
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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）