EUROPEAN POLYMER JOURNAL
·
2022
·
IF 5.546
Mifa Chen,Wuhua Chen,Yefei Wang,Mingchen Ding,Zhenyu Zhang,Dongdong Liu,Dihao Mao
With the gradual exploitation and consumption of conventional petroleum resources, heavy oil is considered as one of the alternative resources for energy supply. The key to the development of heavy oil is to reduce its viscosity. Herein, an amphiphilic polymer named PTVR was synthesized, which showed satisfactory viscosity reduction and recovery of heavy oil. The PTVR was copolymerized by acrylamide (AM), sodium p-styrenesulfonate (SSS) and two functional monomers lauryl methacrylate (LMA) and methyl-2-urea-4[1H]-pyrimidinone (MAUPy). P(AMS), P(ALS) with only one functional monomer, and P(AS) without functional monomer were also synthesized in order to study the effect of functional monomer on polymer properties. The structure of PTVR was identified by 1 H NMR, FT-IR, and TGA. The wettability, interfacial activity between heavy oil and PTVR, and viscosity reduction of heavy oil by PTVR were studied and compared with other three polymers. The results show that PTVR has more excellent properties. This is benefit by the synergistic effect of functional monomers MAUPy and LMA. MAUPy is a typical quadruple hydrogen-bonded monomer. It has the ability to insert into the lamellar aggregates of asphaltenes or resins, weakening or reorganizing the original hydrogen bond interaction. The LMA with long alkyl chain increases the affinity between polymer and heavy oil, which makes the polymer easier to emulsify heavy oil. The viscosity reduction rate of PTVR for heavy oil reached 92.4%, while P(AMS), P(ALS) and P(AS) were 82.8%, 80.7% and 67.2%, respectively. Furthermore, the sand-pack flooding experiment also confirmed that PTVR increased the recovery rate of heavy oil by 14.9%, while the control group was 11.7%, 10.7% and 8.6%, respectively. The application of the amphiphilic polymer PTVR has theoretical significance for enhancing heavy oil recovery.
研究领域:
石油工程
·
材料科学
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DOI
高影响因子
Journal of Coatings Technology and Research
·
2024
·
IF 2.3
Wang Shuai,Tang Baoling,Lu Jiehong
Nonionic polyacrylate (NPA) emulsions were synthesized through emulsion polymerization employing methyl methacrylate (MMA), lauryl methacrylate (LMA), butyl acrylate (BA), hydroxypropyl acrylate (HPA), acrylamide (AM), acrylic acid (AA), and N-hydroxyethyl acrylamide (NHEMAA) for raw materials. Later, some additives were mixed into the emulsion to create a printing coating which was used for digital inkjet printing on fabric surfaces. The effects of different MMA/LMA ratios on the properties of NPA emulsions were discussed and analyzed. In addition, the particle morphology, chemical structure, and surface morphology of the printed coatings of NPA emulsions were also characterized. The results showed that the highest absolute value of zeta potential and the most stable and relatively good properties of the emulsions were obtained at a ratio of 3:2 MMA/LMA. As the ratio of MMA/LMA increased, the screen blocking performance decreased, and the color intensity, rubbing fastness, and washing fastness all improved. Furthermore, the addition of NHEMAA improved the application performance of the printing coating. The optimal application performance of the printing coating, made from NPA emulsion, was achieved when using a MMA/LMA ratio of 3:2 and adding 2 wt% NHEMAA.
研究领域:
材料科学
·
印刷技术
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DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·Vol. 65
·期 30
·15885-15893
·
IF 3.9
Yang Binghan,An Wenjie,Zhang Yichun,Lu Quanfang,Yu Jie
Viscosity
index improvers (VIIs) are indispensable polymer additives
in modern lubricating oil formulations. In this work, a one-pot in situ free-radical polymerization strategy is proposed
for the synthesis of poly(lauryl methacrylate-methyl methacrylate-styrene)
(P(LMA-MMA-ST)) terpolymer VII in base oil, eliminating solvent removal
and complex post-treatment steps. The results showed that the maximum
thermal decomposition temperature, glass transition temperature, particle
size, and dispersity of terpolymers are 346 ° C, −33.64
° C, 16 nm, and 2.17, respectively, confirming that the copolymer
has a uniform molecular structure and adequate thermal stability.
The terpolymer exhibits favorable rheological properties in base oil.
At a content of 7.5 wt %, the viscosity index reaches 225 with a pour
point of −29 ° C, and when increasing the content to 9.1
wt %, the viscosity index further improves to 244 without deterioration
of low-temperature performance. The tribological performance shows
that the maximum reduction of the friction coefficient is up to 14.89%.
Compared with other VIIs, the P(LMA-MMA-ST) delivers competitive efficiency.
All the results demonstrated that the base oil-mediated one-pot strategy
has industrialization potential and practical application in the synthesis
of poly(methacrylate)-type VIIs.
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DOI
高影响因子
Soft Matter
·
2021
·Vol. 17
·期 8
·2327-2339
·
IF 3.679
Caimei Zhao,Lei Chen,Chuanming Yu,Binghua Hu,Haoxuan Huang,Yongjie Chen,Xin Wang,Yongshi Ye,Xiaohui Zhuang,Yong Li
Super-hydrophobic porous absorbents are convenient, low-cost, efficient and environment-friendly materials in the treatment of oil spills. In this work, a simple Pickering emulsion template method was employed to fabricate an interconnected porous poly(DVB–LMA) sponge. A new co-Pickering stabilization system of Span 80 and NiFe2O4 nanoparticles was used to prepare ultra-concentrated internal phase water-in-oil (W/O) emulsions. After further polymerization, the resulting sponges were generated, which exhibited excellent adsorption selectivity due to the super-hydrophobicity and super-lipophilicity. Furthermore, the characterization results indicated that the composites had superior thermal stability, low density, high porosity and a flexible three-dimensional porous structure. Besides, the addition of nickel ferrite nanoparticles provided the materials with extra magnetic operability. High oil adsorption capacity (up to 36.9–84.2 g g−1), high oil retention, fast adsorption rate and superior reusability allowed the materials to be applied in the treatment of oily water.
研究领域:
材料科学
·
环境科学
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产品关联
DOI
PubMed
高影响因子
Optical Materials Express
·
2015
·Vol. 5
·期 6
·1460-1468
·
IF 2.844
Gai Xu,Yuebin Li,Yu Qin,Zuli Liu,Junbo Han,Yibo Han,Kailun Yao
Quantum dots (QDs) based composite thin films show great promise in the application areas ranging from light-emitting diodes (LEDs), nonlinear optical devices to luminescent solar concentrators. We propose and demonstrate a facile method to fabricate ZnSe:Mn QDs/Poly (lauryl methacrylate-co- ethylene glycol dimethacrylate) (QDs/ Poly(LMA-co-EGDMA) composite thin films which show high transmittance up to 90%. Moreover, the as prepared QDs/P composite thin films exhibits high quantum yields (QYs) which could be well tuned from 35% to 67%.The enhanced transparency and QYs of these QDs/P composite thin films are attributed to the triple function of surface decorated 1-dodecanethiol (DDT) including the reducing of surface defects, oxidation resisting and enhancement of dispersity. These prominent performances make them very attractive for applications in various future light-emitting technologies and advanced optoelectronic devices.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
WANG Wei,WANG Song,Y.U. Yiping,L.I. Wei
Conventional granular catalysts exhibit insufficient stability in high-temperature N 2 O catalysis, suffering from issues such as significant bed pressure drop and particle sintering/agglomeration. While light curing molding offers an effective approach for fabricating novel monolithic catalysts to reduce pressure drop and prevent sintering, this method necessitates high-temperature calcination for carrier stabilization, inevitably creating a trade-off between specific surface area and mechanical strength. This study proposes a novel LaMgAl 11 O 19 (LMA) carrier preparation method combining light curing molding with in-situ solid-state synthesis. This approach achieves both precise macro-geometric structuring through light curing molding and simultaneous regulation of LMA crystallization, coarsening, and carrier stabilization via in-situ solid-state reaction, thereby balancing the conflict between carrier strength and specific surface area. The resulting 3D-LMA carrier demonstrates superior performance compared to those produced by traditional 3D-printing methods, maintaining a specific surface area of 10.20 m 2 /g after sintering at 1350 °C with compressive strength reaching 97.62 ± 22.20 MPa. When loaded with Ir to form 3D-Ir/LMA, the catalyst outperforms granular LMA catalysts in N 2 O decomposition tests, exhibiting enhanced catalytic activity and stability. This breakthrough provides new possibilities for meeting the demands of high-temperature N 2 O catalysis.
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Yue Lei,Xin Xu,Junying Yin,Jianping Xu,Kang Xi,Lai Wei,Haihua Wu,Sen Jiang,Yunfang Gao
Commercial Li-ion batteries use LiPF6-based carbonate electrolytes extensively, but there are many challenges associated with them, like dendritic Li growth and electrolyte decomposition, while supporting the aggressive chemical and electrochemical reactivity of lithium metal batteries (LMBs). This work proposes 1,1,1,3,3,3-hexafluoroisopropyl methacrylate (HFM) as a multifunctional electrolyte additive, constructing protective solid-/cathode-electrolyte interphases (SEI/CEI) on the surfaces for both lithium metal anode (LMA) and Ni-rich cathode to solve these challenges simultaneously. The highly fluorinated group (−CF3) of the HFM molecule contributes to the construction of SEI/CEI films rich in LiF that offer excellent electronic insulation, high mechanical strength, and surface energy. Accordingly, the HFM-derived LiF-rich interphases can minimize the electrolyte–electrode parasitic reactions and promote uniform Li deposition. Also, the problems of LiNi0.8Co0.1Mn0.1O2 particles’ inner microcrack evolution and the growth of dendritic Li are adequately addressed. Consequently, the HFM additive enables a Li/LiNi0.8Co0.1Mn0.1O2 cell with higher capacity retention after 200 cycles at 1 C than the cell with no additive (74.7 vs 52.8%), as well as a better rate performance, especially at 9 C. Furthermore, at 0.5/0.5 mAh cm–2, the Li/Li symmetrical battery displays supersteadfast cyclic performance beyond 500 h when HFM is present. For high-performance LMBs, the HFM additive offers a straightforward, cost-effective route.
研究领域:
材料科学
·
电化学
·
电池技术
✓ 已验证
DOI
高影响因子
POLYMER
·
2023
·
IF 4.6
Liang Liu,Yunxin Chen,Chunxia Zhao,Min Guo,Yuanpeng Wu,Yuntao Li,Dong Xiang,Hui Li,Li Wang,Xiaoyan Zhang
Traditional hydrogel-based strain sensors do not work well under water due to extreme swelling and poor adhesion to substrates in water-rich conditions. Inspired by the jellyfish tentacles, a super stretchable dual crosslinked hydrogel was prepared as a motion sensor underwater. The hydrogel contained a cationic surfactant , hexadecyl trimethyl ammonium bromide (CTAB), that crosslinked with hydrophobic lauryl methacrylate (LMA) units in an AA-LMA copolymer . Al 3+ ions also coordinated with carboxyl groups in PAA chains and amino groups on chitosan (CS) to form ionic crosslink points. The formed hydrogel exhibited excellent anti-swelling characteristics, superior tensile properties (≈3000%), and rapid self-healing performance. Due to the complementary effects of electrostatic interactions and dynamic chemical bond formation, the hydrogel efficiently and repeatably adhered to various biological tissues, such as hogskin and shrimp, in aquatic environments. Moreover, the hydrogel-based strain sensor showed high sensitivity (GF = 2.04) over a wide sensing range from 0 to 1000% strain with high stability in air and water. The prepared materials' unique performance further expands their application prospects in flexible wearable devices , anti-counterfeiting recognition, and other fields in environmental conditions.
研究领域:
材料科学
·
生物医学工程
·
可穿戴技术
·
传感技术
✓ 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）