JOURNAL OF APPLIED POLYMER SCIENCE
·
2019
·Vol. 137
·期 11
·48460
·
IF 2.188
Kaixiang Cui,Chuanxian Li,Bo Yao,Fei Yang,Guangyu Sun
The CaCO 3 deposits exist widely in the petroleum industry, causing severe damage to the equipment and production. In this article, a novel environment-friendly terpolymer scale inhibitor Poly (maleic anhydride - acrylic acid -2- acrylamide -2- methyl propanesulfonic acid) (P(MA-AA-AMPS))-containing carboxylic acid group, sulfonic acid group, and amide group was synthesized. The structure and molecular weight were characterized by FTIR, 1 H-NMR, and GPC. The static scale inhibition experiment was conducted to study the influence of factors such as the dosage, monomer ratio, temperature, pH, Ca 2+ concentration, and concentration on the scale inhibition performance of CaCO 3 . The results show that when the monomer ratio is 2.0:1.0:0.5 and the dosage is 20 mg L −1 , the maximum scale inhibition efficiency is 95.52%. Even when Ca 2+ concentration exceeds 1200 mg L −1 and temperature reaches 90 °C, the scale inhibition efficiency is still larger than 80%. The results of SEM and XRD show that P(MA-AA-AMPS) interferes with the growth of CaCO 3 crystal by adsorption, dispersion, and chelation. The effect leads to changes in the morphology of CaCO 3 crystals, the size of which drops from 20–30 μm to 2–5 μm. The P(MA-AA-AMPS) can transform CaCO 3 from stable calcite crystals to unstable aragonite and vaterite. Finally, the formation of CaCO 3 scale is well inhibited. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020 , 137 , 48460.
研究领域:
材料科学
·
石油工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2024
·
IF 6.5
Hui Liu,Yuewen Huang,Yaodong Zhang,Zicheng Xie,Binzhi Wang,Bin Wang
UV curing technology has numerous advantages such as a fast curing speed, environmental friendliness, energy conservation, and thus it is widely used in industrial production and out daily life. Free-radical polymerization is the primary mechanism for UV curing technology. However, free-radical polymerization is susceptible to oxygen inhibition, which leads to incomplete curing when this approach is employed in the air. This paper describes a new silicone acrylate prepolymer , four double bonds and a tertiary amine group at each end of the prepolymers can effectively solve the oxygen inhibition. We synthesized an alkoxymethacryloxy titanium monomer (Ti-MA). This monomer was mixed with the prepolymer and UV cured, which resulted in improved coating properties. The results showed that the double bond conversion of the prepolymer reached 90.66 ± 0.5 % at 20 s, and the residual adhesion rate also exceeded 90 %. The hardness of the coating could reach pencil hardness level 4H with the addition of Ti-MA, and the water contact angle reached 104.5 ± 0.2°, as well as excellent anti-smudge and anti-fingerprint properties. This study provides a new method to solve the oxygen inhibition problem, which has a broad application prospect in the field of coatings.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Ruochen Liu,Jiawei Xu,Tianxiang Hu,Xiang Li,Kongxiang Wang,Qi Huang,Zhongtao Duan,Hong Liu,Weifan Qian,Haiting Zhou,Chunxiao Cong,Xiaofei Yue,Hong Zhang,Fengxian Xie
Utilizing textured fluorine-doped tin oxides (FTO) as transparent conductive oxide (TCO) substrates is advantageous for capturing incident light, thereby enhancing the power photoelectric conversion efficiency (PCE) of inverted perovskite solar cells (PSCs). However, the roughness of these substrates and uncontrolled nucleation often results in voids at the perovskite-buried surface, leading to insufficient charge extraction and serving as degradation initiation points. This study introduces ( S )-3-amino-4-(4-chlorophenyl)butyric acid hydrochloride (AbaCl), which binds to FTO through its anchor group (–COOH) at the deficient regions of MeO-4PACz. Moreover, the chlorine end molecules offer active sites for nucleation by forming halogen bonds with undercoordinated iodide ions (I − ). AbaCl also interacts with formamidinium (FA + ) in perovskite precursor solution via hydrogen bonding, promoting crystallization at the buried interface. Consequently, nucleation at this buried interface becomes preferential, ensuring bottom-up growth and preventing voids formation due to incomplete solvent evaporation, allowing the perovskite layer to conformally adhere to the substrate without gaps. As a result, the AbaCl-treated inverted PSCs achieved a champion PCE of 24.50 % and exhibited enhanced operational stability. This work presents a method for conformally growing perovskite films on textured substrates to produce efficient and stable PSCs.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2026
·
IF 5.1
Jingjing An,Rui Wang,Jianfeng Wang,Yanyu Yang,Wanjie Wang,Yanxia Cao
In this study, recycled poly(vinyl butyral) (r-PVB) and maleic anhydride grafted poly(ethylene-octene) (POE-g-MA) were employed to synergistically toughen polypropylene (PP) via one-step reactive melt blending. Results revealed that hydroxyl groups of r-PVB reacted with anhydride groups of POE-g-MA at the interface, generating in situ compatibilizers and significantly improving interfacial adhesion. Although thermodynamic predictions suggested that POE-g-MA should encapsulate r-PVB, the actual morphology was dominated by viscosity-driven kinetics, leading to the formation of a unique core-shell structure with r-PVB as the shell and POE-g-MA as the core. This morphology effectively promoted energy dissipation, enabling the PP/r-PVB/POE-g-MA (70/10/20) blend to achieve a notched impact strength of 78.0 kJ/m 2 , which is 16.6 times higher than that of neat PP, thus realizing super-toughening. This work not only provides a new pathway for value-added recycling of r-PVB but also reveals a kinetic-dominated mechanism of phase morphology in reactive multicomponent blends.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ANALYTICAL TOXICOLOGY
·
2015
·Vol. 39
·期 7
·551-556
·
IF 2.858
Wang Ting,Yu Zhiguo,Shi Yan,Xiang Ping
At the global level, seizures of crystalline methamphetamine (MA) and MA tablets have risen to a new high, indicating that the substance is an imminent threat. MA enantiomer profiling was a useful tool to investigate the prevalence of MA abuse, the intrinsic characteristics of the seized samples and the trends of precursors. In this work, the distribution of enantiomers in clandestine MA crystals and tablets seized mainly in the Yangtze River Delta region, China, from 2008 to 2014 were identified. The MA samples were diluted with internal standard methanol solution, and analyzed by LC–MS-MS. The detection limits of the enantiomers were 0.04 μg/L. The limit of quantification was 0.1 μg/L. As little as 0.2% of the R-enantiomer ratio could be determined. Standard calibration curves of S- and R-MA showed good linearity in the range of 0.1–80 μg/L (r2 > 0.995). All of the seizures were optically pure S-enantiomer in the years 2008 and 2009. Seized samples containing a slight amount of R-MA began to appear in 2010 and increased in the year 2014. No racemic mixture or R-isomer of MA was seized. From this study, we could find out that smuggling routes and/or precursors might be silently changing in the Yangtze River Delta region, China.
研究领域:
分析化学
·
法医学
·
药学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2022
·Vol. 32
·期 44
·2206703
·
IF 19.924
Yu Chen,Yang shen,Weijian Tang,Yihui Wu,Weidong Luo,Ningyi Yuan,Jianning Ding,Shengli Zhang,Wen-Hua Zhang
The development of inorganic hole-transporting materials (HTMs) is one of the most reliable ways to improve the stability of perovskite solar cells (PSCs). However, the un-optimal buried interfacial contacts and the defects located at the inorganic HTMs/perovskite interface restricted the device's performance. Herein, a phase-pure CuScO 2 has been synthesized and further employed as mesoporous HTM in inverted PSCs. Surprisingly, a facile pretreatment of the hole-transport layer by a formamidine salt compensates the I − vacancy of the buried perovskite film, thus regulating the interfacial band energy alignment between the HTM and perovskite. This ion compensation strategy can not only in situ repair the ion loss and improve the built-in electric field, but also decrease the charge injection barrier and suppress the non-radiative interfacial recombination. Benefiting from these merits, the resulting methylammonium-free (MA), Cs/FA-based PSCs displays a power conversion efficiency (PCE) of 22.42% along with excellent thermal and light stability. Moreover, the pre-buried treatment strategy can be extended to MA-containing CsFAMA triple-cation perovskite film, and a champion inverted device delivers a PCE of 23.11%. This study offers a new avenue to the rational design of HTMs for highly efficient and stable PSCs.
研究领域:
材料科学
·
能源技术
·
光伏器件
✓ 已验证
产品关联
DOI
高影响因子
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
·
2021
·
IF 1.455
WanFu Wang,Qiang Xu
Recently, halide hybrid perovskites have emerged as an attractive material for radiation detection due to their high atomic numbers and resistivity, large μ
τ product ( μ is the carrier mobility ; τ is the carrier lifetime). However, the sensitivity and stability of perovskite X-ray detectors were limited by ion migration in the perovskites. In this paper, the guanidinium ionic (Gua + ) doped MAPbI 3 single crystals were successfully obtained with the solution-processed method. (Gua) 0.06 (MA) 0.94 PbI 3 single crystal shows an activation energy of 589 meV. The X-ray detector with Au/(Gua) 0.06 (MA) 0.94 PbI 3 /Ga structural exhibited a high X-ray sensitivity of 2903 μ C Gy air − 1 cm −2 and a low limit of detection of 7.2 nGy air s − 1 . This work shows that a certain amount of Gua + doping into MAPbI 3 could inhibit the ion migration, and significantly improve the X-ray detection performance.
研究领域:
材料科学
·
辐射探测
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POLYMERS AND THE ENVIRONMENT
·
2021
·Vol. 30
·期 2
·562-568
·
IF 3.667
Gong Ping,Zhao Youxi,Li Ke,Tian Huafeng,Li Chuanming
Soy protein isolate (SPI) has the advantages of low cost, easy processing, stable performance and so on. However, the processing temperature of SPI is high, the processed products are hard and brittle with high water absorption capacity, so it is necessary to modify the soybean protein during processing. Small molecule plasticizer is commonly used globally to plasticize and modify soybean protein. Different plasticizer content has different plasticizing effect on protein, and the properties of materials prepared will also vary greatly. The plasticizer can affect the viscosity of the blends morphology and properties by changing the viscosity of protein phase. In this work, glycerol with the excellent plasticizing effect was selected as plasticizer, and SPI was plasticized with glycerol of different contents, and then the plasticized SPI was blended with poly (butylene adipate-co-terephthalate)(PBAT) to prepare biodegradable blend materials. The influence of plasticizer content on the structure and properties of the blends was explored by observing the microstructure, mechanical and thermal properties of the blends. The results showed that with the increase of glycerol content, the crystallization temperature and melting temperature of the blend system increased, the chain segment was easier to move, and the glass transition temperature(Tg) decreased. At the same time, the viscosity of the blending system decreases, which improves the processing fluidity of the system.
研究领域:
材料科学
·
生物学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Yifan Yang,Mengyao Yang,Zhaohui Huang,Jizeng Zhao,Wei Zhao,Ding'ao Yang,Lin Ren,Xiantang Zhao,Hao Yan,Lei Liu,Lei Gong
With the increasing severity in the service environment of secondary refining furnaces, traditional refractories cannot meet the high requirements. MgO-based fired refractories are subject to the thermal shock effect and slag penetration which are detrimental to their performance. In this study, low-carbon MgO-based refractories are reinforced by an in-situ MgAl 2 O 4 (MA)-TiO 2 dense layer with the addition of low-cost self-prepared titanium carbonitride [Ti(C, N)]. The influence of the addition of as-prepared Ti(C, N) on the properties of low-carbon MgO-based refractories was investigated. The reinforced refractories had no cracks after 190 thermal shock cycles, demonstrating the highest hot modulus of rupture (HMOR) with excellent thermal shock resistance (TSR). After 2.5 h of rotary immersion in a steel slag, the corrosion depth of the composites was only 26.3% of that of commercial MgO-CaO refractories. Based on the thermodynamic analysis, the Ti(C, N) reinforcement mechanism for the low-carbon MgO-based refractories was studied. A MA-TiO 2 dense layer formed during the oxidation process of the composites which enhanced the oxidation resistance . The volume expansion caused by the partial oxidation of Ti(C, N) prevents the penetration of the molten slag to refractories and Ti(C, N) powders forming a protective layer to further effectively protect the composites from slag corrosion owing to its high surface area. In addition, 3CaO·2TiO 2 formed by the reaction between the steel slag and Ti(C, N) further increased the slag corrosion resistance (SCR) of the composites. This research offers a new idea for the material selection for secondary refining furnaces to achieve a green and effective steel-making production route and enriches the understanding of the phase behaviour in the Mg-Al-Ti-C-O-N system under high temperatures.
研究领域:
材料科学
·
冶金工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
·
2020
·Vol. 20
·期 3
·1685-1696
·
IF 1.134
Wang Weijing,Han Na,Yang Chao,Zhang Wenxin,Miao Jinlei,Li Wei,Zhang Xingxiang
The process in which the nanofiber membrane is used to remove heavy metal ions and separation of oil-water solution is analyzed. Herein, smooth structures are induced by rGO-g-PAO sheets, which could be attributed to the strong interaction between P(AN-MA) and rGO-g-PAO. It is rewarding
to note that the P(AN-MA)/rGO-g-PAO nanofiber membrane would exhibit superhydrophilic traits in the air and ultra-low oil-adhesive traits underwater when the concentration of P(AN-MA) and PAO is 13 wt.% and 0.3 wt.%, respectively. The amidoxime (–C(NH2) NOH) groups on the
membrane surface can efficiently adsorb copper (Cu(II)) (1.65 mmol/g) and chromium (Cr(VI)) (4.70 mmol/g) ions in the waste water. Meanwhile, the P(AN-MA)/rGO-g-PAO nanofiber membrane exhibits ultrahigh flux (~6150 LMH), satisfying rejection rate (~97%) and outstanding flux recovery ratio
(~99%) in separating oil water emulsion.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2017
·Vol. 5
·期 24
·6071-6078
·
IF 5.256
Jiaqi Liu,Yuqi Zhang,Ru Zhou,Loujun Gao
Functional molecule-infiltrated inverse opal photonic crystals can exhibit reversible photonic stopband shifts as a response to the external environment, which enables them to be promising chemical or biochemical sensors. The present study reports on a copolymer, poly(2-hydroxyethyl methacrylate-co-methyl acrylate), infiltrated SiO2 inverse opal as visual sensor for the detection of volatile alcohols vapors. The constructed sensor generates remarkable stopband red-shifts when exposed to an atmosphere of volatile alcohols. Particularly for isopropanol and butanol, a red-shift of more than 85 nm can be obtained and the color of the sensor changes from green to red, which can be observed by the naked eye. This can be attributed to the increased effective refractive index of the inverse opal caused by the diffusion and adsorption of alcohol molecules into the pores. This is based on a combination of a three-dimensional macroporous structure of the inverse opal and strong affinity of the copolymer to alcohols. The exposure to air can reactivate the sensor because of the volatilization and desorption of alcohols. The selectivity, sensitivity and the reusability of the sensor have been investigated by monitoring the reflectance spectra. The results demonstrate that the prepared sensor can be used as a promising candidate as visual sensors for detecting volatile alcohol vapors.
研究领域:
材料科学
·
化学传感
✓ 已验证
DOI
高影响因子
OPTICS AND LASER TECHNOLOGY
·
2024
·
IF 4.6
Hongxin Zhang,Xuegang Li,Xue Zhou,Yanan Zhang,Yong Zhao
As a precursor to butyric acid and also a short-chain triglyceride, tributyrin plays an important role in repairing small intestinal villi, promoting the absorption and utilization of nutrients, and monitoring human health. The traditional carboxylation functionalization method of optical fiber sensors takes a long time and is complicated to operate. Therefore, we need a sensor with a functional period, high sensitivity, and the ability to quickly detect samples to achieve specific detection of tributyrin. In this paper, based on the chemical cross-linking method of polydopamine-maleic acid (PDA-MA), a novel fiber-optic microfluidic surface plasmon resonance (SPR) sensor was proposed to realize the detection of tributyrin. Compared with the traditional functionalization method, the fixation method of PDA-MA chemical cross-linking method not only shortens the functionalization time, but also increases the sensitivity of the sensor. Experimental results show that the sensitivity of the microfluidic sensor coated with PDA reaches 3392.7 nm/RIU, which is 1.75 times that of the uncoated sensor. The sensor has a sensitivity of 8.22 nm/mM in the range of 0.5–5 mM and a response time of only 8 min at the concentration of 1 mM. In addition, the sample detection error of the sensor is within 12 % in the range of 0.5–5 mM. The proposed sensor offers the advantages of low sample consumption (100 μL), high sensitivity, good selectivity, good repeatability, anti-interference ability, and label-free measurement. The sensor holds promising applications in food safety and health monitoring due to its superior performance.
研究领域:
生物传感
·
食品科学
·
健康监测
✓ 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）