COLLOID AND POLYMER SCIENCE
·
2025
·
IF 2.3
Liu Yinyin,Wang Lei,Liu Guiru,Jin Hongtao,Lai Xiaojuan,Li Haibin,Chen Jiali
X-β-cyclodextrin (β-CD), a vinyl-functionalized monomer, was successfully synthesized through the chemical modification of β-CD. Subsequently, X-β-CD was co-polymerized with acrylic acid, acrylamide, and 2-acrylamido-2-methylpropane sulfonic acid via free radical copolymerization to produce a novel hydrophobic inclusion polymer—X-β-HPAM. The structure of X-β-HPAM was characterized using Fourier transform infrared spectroscopy, proton nuclear magnetic resonance spectroscopy, and scanning electron microscopy. Furthermore, its aqueous rheological properties were analyzed through rheometry. The results revealed that at shearing temperatures of 120 °C and 150 °C and a shear rate of 170 s −1 , the viscosity of a 0.4% X-β-HPAM aqueous solution gradually increased beyond a shear time of 1200 s, indicating the thickening effect of the X-β-CD monomer on the solution at elevated temperatures. Following shearing for 2 h, the residual viscosity stabilized at 62.24 mPa·s, after undergoing a shearing process for a duration of 2 h, the viscosity of a X-β-HPAM salt solution, with a mass fraction of 0.4% and dissolved in a 5% NaCl aqueous solution at a temperature of 150℃, remains consistently stable at the value of 60.04 mPa·s, demonstrating the excellent salt, temperature, and shear resistance of X-β-HPAM. Thus, β-CD-modified polyacrylamide enhances the thermal resistance and shear resistance of fracturing fluids, thereby improving recovery efficiency. Graphical abstract
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
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
He Li,Jinsheng Sun,Shuixiang Xie,Kaihe Lv,Xianbin Huang,Jiajiang Zong,Yu Zhang
Water-based drilling fluids (WDFs) as a thermally unstable colloidal system play an essential role in the drilling operation. The filtration loss control of WDFs under high temperature and salt contamination has been a research hotspot. In this study, the copolymer (named DSA) containing different cyclic side groups was synthesized to control the filtration loss of WDFs. The chemical structure and thermal stability of the DSA were analyzed. The result showed that DSA exhibited only a slight weight loss (6.0 wt%) until 300 °C. The effect of DSA concentration on the rheological performance of WDFs was investigated with a HAAKE rheometer. The filtration loss control ability of DSA was evaluated according to the American Petroleum Institute standards. The filtration loss volume of WDFs with 15 wt% NaCl could be controlled to 9.6 ml with 2.0 wt% DSA after aging at 190 ℃. To study the mechanism, the absorption behavior of DSA on bentonite with concentration was studied. The saturated absorption capacity of 2.0 wt% DSA on bentonite was 94.7 mg/g. The effect of DSA on the dispersion of WDFs was analyzed by measuring the zeta potential and particles size distribution . Then, the micromorphology and permeability of the filter cakes for WDFs were analyzed. According to the results, DSA effectively absorbed on the bentonite surface, reducing the zeta potential and particles size of the bentonite to form filter cakes with low permeability. The filtration loss of WDFs was then controlled by DSA. The research results were instructive for the development of polymer with high temperature and salt resistance for WDFs.
研究领域:
石油工程
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Yu-Qiong Luo,Fei Song,Jia-Min Wu,Fang Wang,Xiu-Li Wang,Yu-Zhong Wang
As an environmental-friendly and cost-effective technology, interfacial evaporation mediated by photo-thermal materials has shown great potential in solar desalination and wastewater treatment. However, salt accumulation or fouling on the surface of solar absorbers during water evaporation, especially in high-salinity brines, is seemingly inevitable for current solar evaporators, resulting in severely weakened steam generation performance as well as limited long-term use. Here, inspired by water strider, we demonstrate a new type of solar evaporator consisting of a hydrophobic frame, a hydrophilic solar absorber and a heat-insulation layer. Relying on the surface tension force generated by the hydrophobic frame, the solar evaporator can suspend stably just underneath water surface, enabling the confinement of a thin water film on solar absorber for salt-resistance and efficient energy utilization. More notably, the suspending depth is kept almost unchanged in different-salinity brines, achieving high evaporation rates (1.45 kg m -2 h - 1 and 1.35 kg m -2 h - 1 ) in highly concentrated salt solutions (15 wt% and 20 wt% NaCl) under one-sun illumination. No salt-accumulation is observed during the evaporation process till the limit of salt-saturation, and stable evaporation performance is achieved under dynamic water environment. With the merits of antifouling and excellent evaporation performances, the new concept of “suspended evaporators” provides great opportunities in solar-based water desalination and treatment, especially for high-salinity seawater or in closed-systems.
研究领域:
环境科学
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材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Ren Wang,Yilin Deng,Jie Yang,Jinsheng Sun,Wenjun Shan,Huaizhi Tao,Jianlong Wang,Luman Liu,Zexing Yang,Han Ren
Conventional drilling fluid viscosity enhancers have poor anti-temperature and anti-salt properties, making it difficult to regulate the rheological properties of drilling fluids in the high-temperature, high-mineralisation environment of deep formations, which is prone to causing downhole accidents such as stuck drills and well-wall instability. In the present study, a salt-responsive amphiphilic hydrophobically attached polymer (PAADS) was synthesised by free-radical micellar polymerisation and used as a viscosity builder for saturated sodium chloride drilling fluids. The molecular structure and thermal stability were characterised by Fourier transform infrared spectroscopy, nuclear magnetic resonance and thermogravimetric analysis . The results reveal that the molecular structure of PAADS is consistent with the expected target and has good thermal stability . The viscosity-increasing performance of PAADS in a saturated sodium chloride drilling fluid was evaluated according to the American Petroleum Institute standard. PAADS can effectively maintain the rheological performance of the drilling fluid under high-temperature and high-salt conditions, and the apparent viscosity retention rate of the saturated sodium chloride drilling fluid containing 2 wt% PAADS can be up to 47.5 % after 180 °C hot rolling. NaCl exhibits significant salt-responsive properties by affecting the hydrodynamic radius of PAADS molecules. In addition, PAADS solutions exhibit excellent shear dilution, viscoelasticity and stable internal space structure. This study provides new ideas for salt-resistant drilling fluid additives, which are of great significance for the efficient development of deep oil and gas resources.
研究领域:
石油工程
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Jing Zhou,Xu Zhang,Feiyong Chen,Jingtao Xu,Xuewu Zhu,Jia Liu,Bing Xu
As an environmentally friendly approach to desalination and water purification, solar interfacial evaporation contributes significantly to mitigating global water shortages. However, technical challenges still exist in achieving multipurpose, high evaporation rates, low cost and durability. Herein, we proposed a novel solar evaporator, the zwitterionic wood evaporator, which exhibited high efficiency and energy-saving characteristics while enabling effective desalination of NaCl high-salinity solution. This paper proposed the use of zwitterionic hydrogel as a new platform for solar-driven brine purification under extreme salinity conditions. Zwitterionic hydrogel is a high-water-content polymer network, whose molecular structure simultaneously contains positively charged (-N(CH 3 ) 2 + ) and negatively charged (-SO 3 - ) functional groups. By leveraging the anti-polyelectrolyte property of zwitterionic hydrogels, zwitterionic wood evaporator effectively inhibits the migration of salt ions via its monovalent charge characteristics, while also demonstrating excellent water activation capability. Moreover, this molecular structure promotes the formation of a zwitterionic polymer network and intermediate water, which in turn enhances the evaporation process. By optimizing water evaporation performance, zwitterionic hydrogels contribute to the long-term stability and salt tolerance of zwitterionic wood evaporator by preventing salt crystals accumulation and maintaining structural integrity. Under 1 kW m⁻ 2 solar radiation intensity, the zwitterionic wood evaporator achieved 2.673 kg m⁻ 2 h⁻ 1 evaporation rate in 15 wt% NaCl solution, with 85.29 % energy efficiency. It operated continuously for 12 days (9 hours/day) without obvious salt crystals accumulation. The zwitterionic wood evaporator design and salt crystallization suppression strategy proposed in this study provide a low-cost, sustainable solution for off-grid desalination and zero liquid discharge.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Luman Liu,Jinsheng Sun,Ren Wang,Yuanzhi Qu,Fan Liu,Jie Yang,Rongchao Cheng,Shifeng Gao,Hongjun Huang
To overcome the negative effects of high temperature and salt pollution on the performance of drilling fluid in deep and ultra-deep wells, it is imperative to develop a high- temperature-and salt-resistant filtrate reducer. A zwitterionic quaternary copolymer (DADN) of N, N-dimethylacrylamide (DMAA), 2-acrylamido-2-methylpropane sulfonic acid (AMPS), diallyl dimethyl ammonium chloride (DMDAAC), and N-vinylcaprolactam (NVCL) was synthesized in an aqueous solution by free radical copolymerization reaction. The composition, structure, and thermal stability of the copolymers were characterized by Fourier transform infrared spectroscopy (FT-IR), proton nuclear magnetic resonance ( 1 H NMR), Gel Permeation Chromatography (GPC), elemental analysis and thermogravimetric analysis (TGA), respectively. Furthermore, the filtration loss reduction performance of DADN was evaluated according to the American Petroleum Institute (API) standard. The mechanisms of filtrate loss reduction and salt resistance were revealed based on the transmission electron microscopy (TEM) analysis, adsorption isotherm and zeta potential analysis for the water-based drilling fluid (WBDF) containing DADN, and the scanning electron microscopy (SEM) analysis, energy-dispersive spectrometry (EDS) analysis and Brunner–Emmet–Teller (BET) analysis for the corresponding filter cake. The results showed that the thermal decomposition of DADN mainly happened over 298 ℃. Meanwhile, DADN exhibited the most outstanding filtration loss reduction ability compared to three commercially filtrate reducers (Driscal D, CMC and PAC-Lv). Specifically, the filtration losses of Driscal D/WBDF, CMC/WBDF and PAC-Lv/WBDF were 18.2, 31.2 and 24.8 mL after hot rolling at 220 °C for 16 h, respectively, while the filtration loss of DADN was only 6.5 mL. It was found that 2% DADN showed excellent filtration loss reduction ability at 220 °C and 15% NaCl. As confirmed by the SEM, EDS and adsorption isotherm results, strong adsorption of DADN on bentonite was obtained even under a high temperature and high-salinity environment. In particular, in the high-salinity environment, a firm “star network” structure formed by bentonite/DADN was observed by TEM, significantly improving the colloidal stability and filter cake compactness of WBDF.
研究领域:
石油工程
·
材料科学
✓ 已验证
DOI
高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Yan Xue,Honghai Long,Hong Xu,Xunyu Zhang,Bing Wei,Jun Lu
Gel treatment is a highly effective technique for conformance control, significantly managing water production and enhancing oil recovery in mature reservoirs. However, the performance of conventional hydrogel systems often deteriorates under harsh conditions such as elevated temperatures and high salinity. To overcome this limitation, we developed a hydrogel with exceptional stretchability and resilience by integrating phenyl nanospheres (PNSs) as nanocross-linkers within polyampholyte chains. The PNSs were synthesized through precipitation polymerization of divinylbenzene in a water/ethanol solvent. P(AM-AMP-DAD)PNS gels were fabricated by copolymerizing acrylamide (AM) with equimolar amounts of 2-acrylamido-2-methylpropanesulfonate sodium (AMPS-Na) and diallyl dimethylammonium chloride (DADMAC), utilizing PNSs as cross-linkers. This unique structure achieved a remarkable breaking elongation of 920% at 100 kPa and exhibited no fractures after five cycles at 400% strain. Hydrophobic interactions among PNSs created dynamic association domains, enabling reversible energy dissipation and improving mechanical robustness. The antipolyelectrolyte effect of the polyampholyte chains provided exceptional fracture resistance in ultrahigh-salinity environments. The swelling ratio of P(AM-AMP-DAD)PNS gels remained stable and even slightly increased in formation water, particularly at 130 °C, where it was 1.2 times higher than at room temperature. Furthermore, this hydrogel demonstrated long-term stability under extreme conditions (130 °C, 2.2 × 105 mg L–1 salinity, Ca2+ + Mg2+ = 1.3 × 104 mg·L–1) for up to 60 days. Core-flooding tests revealed that the fractured core, treated with P(AM-AMP-DAD)PNS particles and subjected to high-temperature aging, achieved a breakthrough pressure exceeding 6 MPa, with a plugging efficiency of 99.93%. These results confirm the hydrogel’s superior plugging performance under ultraharsh reservoir conditions, making it a promising candidate for enhanced oil recovery applications.
研究领域:
材料科学
·
石油工程
✓ 已验证
产品关联
DOI
高影响因子
Gels
·
2024
·Vol. 10
·期 1
·73
·
IF 5
Quanyang Wang,Jing Cai,Jiannan Wang,Chenghua Zhou,Xinxin Wen,Jiang Zhang,Hui Mao
With the gradual deepening of the exploration and development of deep and ultra-deep oil and gas resources, the problem of lost circulation in drilling operations is becoming more and more complex. From field experience, conventional plugging materials cannot fully meet the technical requirements of plugging operations in drilling engineering. In this study, a high-temperature- and salt-resistant polymer HDZ−A was synthesized. A high-temperature and delayed crosslinking polymer gel plugging agent can be prepared by adding a certain concentration of a crosslinking agent and a retarder. In this paper, the optimum synthesis conditions of the HDZ−A were determined with orthogonal experiments using viscoelasticity and viscosity as evaluation criteria for newly developed polymers. The molecular structure, temperature resistance, and relative molecular mass of HDZ−A were determined using infrared spectroscopy, nuclear magnetic resonance spectroscopy, and gel permeation chromatography. In addition, the optimal formula of the gel plugging agent was determined using gel strength as the evaluation standard. The results show that the newly developed gel plugging agent has stable performance after high-temperature crosslinking, and can resist high temperatures of 160 °C during formation. Under conditions of 160 °C, the gelation time can reach 4.5 h, and the plugging efficiency can reach more than 97%. Finally, the field test of the newly developed high-temperature-resistant delayed crosslinking polymer gel plugging agent was carried out in the direct exploration well KT-14X in the Ordos Basin. The field test showed that the plugging effect of the HDZ−A gel plugging agent was remarkable.
研究领域:
石油工程
·
高分子化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMER BULLETIN
·
2020
·Vol. 78
·期 5
·2483-2503
·
IF 2.014
Mao Hui,Wang Weiji,Ma Yongle,Huang Yan
An anionic polymer P (ANAN) of acrylamide, N -vinyl-2-pyrrolidone and 2-acrylamide-2-methylpropanesulfonic acid was synthesized through free radical polymerization and initiated by 2,2′-Azobis (2-methylpropionamide) dihydrochloride as an anti-high temperature and anti-calcium and magnesium contamination fluid loss control additive for water-based drilling fluid. The P (ANAN) was characterized by 13 C-NMR and 1 H-NMR, FTIR, elemental analysis and GPC analysis. The fluid loss tests were carried on different WBDFs. The results showed that this polymer can resist 4.5 × 10 5 ppm of Cl −1 , 4 × 10 5 ppm of Ca 2+ contamination at low pH environment caused by acid gas invasion in drilling fluid at 180 °C. The fluid loss control mechanisms of P (ANAN) were investigated by Zeta potential analysis, particle size distribution analysis and mud cake quality analysis. The thermal stability was investigated by TGA analysis. The results illustrate that the P (ANAN) exhibits a stronger interaction with clays and higher-temperature resistance, and it can improve the colloidal dispersion property obviously for drilling fluid under salts, calcium and magnesium contamination and even under circumstances of acid gas invasion conditions. Due to its superior fluid loss control properties, the P (ANAN) can be a promising polymer for water-based drilling fluid in deep and ultra-deep well drilling applications.
研究领域:
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2021
·
IF 15.881
Xiangyang Dong,Yang Si,Chaoji Chen,Bin Ding,Hongbing Deng
Sufficient and clean freshwater is still out of reach for billions of people around the world. Solar desalination from brine is regarded as one of the most promising proposals to solve this severe crisis. However, most of the reported evaporators to date still suffer from the decreasing evaporation rate caused by salt crystallization accumulated on their surface. Here, inspired by the vascular tissue structure, transpiration, and antifouling function of reed leaves, we design biomimetic hierarchical nanofibrous aerogels with parallel-arranged vessels and hydrophobic surfaces for highly efficient and salt-resistant solar desalination. Foldable vessel walls and flexible silica nanofibers give the reed leaf-inspired nanofiber aerogels (R-NFAs) excellent mechanical properties and enable them to withstand repeated compression. Besides, the R-NFAs can efficiently absorb sunlight (light absorption efficiency: 94.8%) and evaporate the brine to vapor, similar to reed leaves (evaporation rate: 1.25 kg m–2 h–1 under 1 sun). More importantly, enabled by the hydrophobic surfaces and parallel-arranged vessels, the R-NFAs can work stably in high-concentration brine (saturated, 26.3 wt %) under high-intensity light (up to 6 sun), demonstrating potent salt resistance. It is expected that R-NFAs with combined antisalt pore and surface structures will provide a designed concept for salt-resistant solar desalination.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DESALINATION
·
2021
·
IF 9.501
Xu Ma,Xinyi Wan,Zhou Fang,Zhuoyi Li,Xiaobin Wang,Yue Hu,Mengyang Dong,Zhizhen Ye,Xinsheng Peng
Solar-driven interfacial desalination (SDID) has emerged as an efficient and eco-friendly technology to produce clean water. However, salt deposition on photothermal material severely restricts the operation stability and service life. Herein, this issue was addressed by regulating the oriented seawater transportation through flexible Cu(TCNQ) metal-organic frameworks (MOFs)-based nanorod arrays (MAS) and isolating the salt crystallization from the evaporating surface. The SDID device with the novel architecture is rationally designed, which not only shows good anti-salt deposition ability and superior clean water production performance, but also achieves simultaneous salt extraction. Under 1 sun irradiation, the MAS in SDID device displays an impressive water evaporation rate of 1.78 kg m −2 h −1 (projected area) and a high salt extraction rate of 47.0 g m −2 h −1 . Even at night, the MAS can also extract salt at the rate of 12.6 g m −2 h −1 . This work provides a new idea to design highly efficient multifunctional solar desalination device for seawater resource comprehensive utilization and zero-liquid discharge.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2024
·Vol. 29
·期 11
·2596
·
IF 4.2
Guohui Qu,Bowen Li,Yikun Liu,Zilu Zhang,Lifeng Bo,Jiqiang Zhi,Xuebin Tian,Xiaorui Bai,Xiunan Li,Qi Lv
Polymer microspheres with temperature and salt resistance were synthesized using the anti-suspension polymerization method, incorporating the functional monomers AMPS, AM, and AA. To enhance their self-gelling properties, the microspheres were designed with a core–shell structure. The shell is composed of a polymeric surfactant, fatty alcohol polyoxyethylene ether methacrylate (AEOMA), which serves as a thermosensitive crosslinking agent, enabling self-crosslinking upon shell decomposition, addressing compatibility with reservoir pore throat dimensions. Comprehensive characterizations including infrared spectroscopy, scanning electron microscopy, optical microscopy, and laser particle size analysis were conducted. The microspheres exhibited successful synthesis, a nanoscale size, and regular spherical morphology. They demonstrated excellent temperature and salt resistance, making them suitable for high-temperature, high-salinity reservoir profile control. With a stable three-dimensional network structure, the microspheres displayed good expansion behavior due to hydrophilic groups along the polymer chains, resulting in favorable water affinity. Even after aging, the microspheres maintained their gelling state with a distinct and stable microscopic network skeleton. They exhibited superior plugging performance in low-permeability reservoirs, while effectively improving water absorption profiles in reservoirs with permeability contrasts of 10 to 80, thereby enhancing oil recovery.
研究领域:
石油工程
·
高分子材料
·
油田化学
·
提高采收率
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）