Synthesis and Characterization of a Temperature-Sensitive Microcapsule Gelling Agent for High-Temperature Acid Release

ACS Omega, Год журнала: 2024, Номер 9(19), С. 20849 - 20858

Опубликована: Апрель 30, 2024

Deep, high-temperature carbonate reservoirs, represented by the Chuanzhong-Gaomo Block and Penglai Gas Field, have become important supports for increased storage production in Sichuan Basin. However, acidization to ultrahigh-temperature reservoirs faces several technical challenges, such as fast acid-rock reaction rates, limited acid corrosion distances, high risks of tubular corrosion. In this study, a novel high-temperature-resistant microencapsulated gelling agent GLE-3 was prepared using N-isopropylacrylamide (NIPAM) wall material, acrylamide (AM), 2-acrylamido-2-methylpropanesulfonic (AMPS), N-vinylcaprolactam (NVCL) core materials, N,N′-methylenebis(acrylamide) (MBA) cross-linking through inverse emulsion polymerization. structurally characterized infrared spectroscopy, transmission electron microscopy, particle size analysis, its properties were evaluated. The results showed that exhibited uniform distribution ranging from 10 100 μm. Under conditions 180 °C shear rate 170 s–1, viscosity gel solution remained above 27.8 mPa·s, with retention 63.76%. Compared GLE-1 (uncapsulated), demonstrated improved thermal stability after microencapsulation. After 60 min shearing at 88.99%. Furthermore, under conditions, good slow-release performance compared GLE-1, which unencapsulated same raw materials. By increasing acid, delaying rate, providing effects, resistance system enhanced, ultimately achieving deep reservoirs.

Язык: Английский

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Light emissions of ratiometric aliphatic redox polymer from canonical, anion, and anion-aggregate: Reduction-associated naked eye detections of Hg(II), Fe(III), and Cu(II)

European Polymer Journal, Год журнала: 2024, Номер 206, С. 112754 - 112754

Опубликована: Янв. 10, 2024

Язык: Английский

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Exploring structures-properties and interactions of acrylic-hydrogel adsorbents with metal ions and organics using nuclear magnetic resonance and Fourier transform infrared spectroscopies

Journal of environmental chemical engineering, Год журнала: 2025, Номер unknown, С. 115362 - 115362

Опубликована: Янв. 1, 2025

Язык: Английский

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Through bond energy transfer (TBET)-based chemosensor with large Stokes shift for colorimetric and fluorogenic determination of Fe3+ in aqueous system and intracellular imaging application

Journal of Molecular Liquids, Год журнала: 2024, Номер 399, С. 124363 - 124363

Опубликована: Март 2, 2024

Язык: Английский

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Synthesis of Intrinsically‐Fluorescent Aliphatic Tautomeric Polymers for Proton‐Conductivity, Dual‐State Emission, and Sensing/Oxidation‐Reduction of Metal Ions

Macromolecular Rapid Communications, Год журнала: 2024, Номер 45(19)

Опубликована: Июнь 21, 2024

Abstract Herein, fluorescent conducting tautomeric polymers (FCTPs) are developed by polymerizing 2‐methylprop‐2‐enoic acid (MPEA), methyl‐2‐methylpropenoate (MMP), N ‐(propan‐2‐yl)prop‐2‐enamide (PPE), and in situ‐anchored 3‐( ‐(propan‐2‐yl)prop‐2‐enamido)‐2‐methylpropanoic (PPEMPA). Among as‐synthesized FCTPs, the most promising characteristics FCTP3 confirmed NMR Fourier transform infrared (FTIR) spectroscopies, luminescence enhancements, computational studies. In FCTP3, ─ C(═O)NH , −C(═O)N<, C(═O)OH, C(═O)OCH3 subluminophores identified theoretical calculations experimental analyses. These facilitate redox characteristics, solid state emissions, aggregation‐enhanced emissions (AEEs), excited‐state intramolecular proton transfer (ESIPT), conductivities FCTP3. The ESIPT‐associated dual emission/AEEs of elucidated time correlated single photon counting (TCSPC) investigation, solvent polarity effects, concentration‐dependent dynamic light scattering (DLS) measurements, field emission scanning electron microscopy images, calculations. cyclic voltammetry measurements indicate cumulative efficacy /−C(═O)N<, C( O )═NH+ / )═N+, C(═N)OH functionalities. dual‐emission enable selective detection Cr(III)/Cu(II) at λ em1 em2 with limit 0.0343/0.079 ppb. preferential interaction (amide)/FCTP3 (imidol) oxidation/reduction to Cr(VI)/Cu(I) further supported NMR‐titration; FTIR X‐ray photoelectron spectroscopy analyses; TCSPC/electrochemical/DLS measurement; alongside conductivity is explored electrochemical impedance I – V measurements.

Язык: Английский

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Synthesis of Semisynthetic Dual-State Fluorescent Polymers and Roles of Starch/Pectin on AIET-Assisted Dual-Emission, Conductivity, and Metal-Ion Sensing

ACS Applied Polymer Materials, Год журнала: 2024, Номер 6(14), С. 8116 - 8132

Опубликована: Июль 12, 2024

Язык: Английский

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Exploring Through-Space Charge Transfer-Mediated Optoelectrochemical Properties of Dual-State Luminescent Aliphatic Polymers and Optoelectronic Responses toward Metal Ions

Langmuir, Год журнала: 2024, Номер 40(42), С. 22265 - 22282

Опубликована: Окт. 9, 2024

Herein, natural-synthetic hybrid dual-state luminescent conducting polymers (DLCPs/DLCP1–DLCP8) possessing significant optoelectrochemical properties are strategically developed by the polymerization of prop-2-enamide, cis-butenedioic acid, 2-acrylamido-2-methylpropane-1-sulfonic and in situ-generated 2-(3-acrylamidopropanamido)-2-methylpropane-1-sulfonic acid alongside grafting gum tragacanth. The spectroscopic data aliphatic DLCPs affirm DLCP7 as most stable supramolecular assembly endowing optoelectronic properties. Computational calculations identified −C(═O)NH–, −C(═O)OH, −OH, −SO3H subluminophores. absorption spectra, excitation wavelength-/solvent-polarity-/concentration-dependent luminescence, solid state aggregation-induced enhanced time-correlated single photon count (TCSPC) studies confirm occurrence aggregation-mediated intramolecular through-space charge transfer (ITSCT) excited DLCP7. Mulliken charge, natural bond orbital, dipole moments, electronic potential surface analyses donor–acceptor system Furthermore, selective response toward Ca2+/Cu(II) at 438/574 nm is explored using ultraviolet–visible TCSPC analyses, a dynamic light scattering study, computational investigations. chelation-enhanced luminescence ITSCT inhibition responsible for turn-on turn-off detections Ca2+ Cu(II), respectively. Cu(II) → Cu(I) reduction solution inferred from electrochemical analyses. conductivities 9.65 × 10–5 S cm–1 (solid state) 44.35 (solution) validated current–voltage impedance measurements. Again, strong 43.89 state)/53.34 45.42 state)/64.81 observed Ca2+-DLCP7 Cu(II)-DLCP7,

Язык: Английский

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Uncovering Integrated Dual‐State ESIPT‐Conductivity, Redox‐Capacity, and Opto‐Electronic Responses Toward Hg(II)/ Cr(III) of Aliphatic Fluorescent Polymers

Macromolecular Rapid Communications, Год журнала: 2024, Номер 45(23)

Опубликована: Окт. 26, 2024

Abstract Excited‐state intramolecular proton transfer (ESIPT)‐associated dual‐state emissive aliphatic dual‐light emitting conducting polymers (DLECPs) having oxidation‐reduction capacities are prepared polymerizing 2‐acrylamido‐2‐methylpropane‐1‐sulfonic acid, methacrylic and 2‐methyl‐3‐( N ‐(2‐methyl‐1‐sulfopropan‐2‐yl)acrylamido)propanoic acid monomers. Of as‐synthesized DLECPs, nuclear magnetic resonance (NMR) Fourier transform infrared (FTIR) spectroscopies, fluorescent enhancements ( I / 0 ), computational investigation indicate intriguing photophysical features in DLECP3 (optimum composition). In DLECP3, ─CONH─, ─CON<, ─COOH subluminophores recognized by density‐functional theory (DFT)/time‐dependent‐DFT calculations experimental investigations. ESIPT‐associated emission/conductivity, aggregation‐enhanced emissions, selective opto‐electronic responses toward Hg(II)/Cr(III) at 437/574 nm, redox properties of supported solid‐state/solution time‐correlated single photon counting (TCSPC) measurements, excitation dependent microscopic images, electrochemical DFT calculations. Here, preferential interaction with (amide)/DLECP3 (imidol) reduction/oxidation to Hg(I)/Cr(VI) substantiated UV–vis, FTIR, X‐ray photoelectron spectroscopies; TCSPC measurements; NMR‐titration; studies; alongside The proton‐electrical conductivities Hg(II/I)‐DLECP3, Cr(III/VI)‐DLECP3 solids/solutions 15.27 × 10 −5 /6.16 , 19.60 /25.52 26.69 /27.60 S cm −1 respectively.

Язык: Английский

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Fabrication of a High Proton‐Conducting Sulfonated Fe‐Metal Organic Framework‐Polytriazole Composite Membranes: Study of Proton Exchange Membrane Properties

Macromolecular Rapid Communications, Год журнала: 2025, Номер unknown

Опубликована: Фев. 12, 2025

Abstract A series of hybrid composite membranes including polymer‐metal‐organic frameworks (MOFs), are synthesized using sulfonated Fe‐MOF and polytriazole (PTSF). After being post‐modified by 1,3‐propane sultone, the obtained Fe‐S MOF is incorporated into polymer matrix through solution blending method. Additionally, a with degree sulfonation 60 prepared, percentage ranging from 3 to 9 weight percent. comparison made between properties these those pristine membranes. The demonstrate high solubility in every solvent that employed. Scanning electron microscopy (SEM) atomic force (AFM) confirm distributed uniformly throughout matrix. Moreover, well‐separated morphologies confirmed transmission (TEM). prepared enhanced proton conductivities, water absorption, swelling, all which accomplished without influencing oxidative stability values.

Язык: Английский

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Preparation of sulfated/sulfonated castor oil through an eco-friendly process and its application in leather

Polymer Bulletin, Год журнала: 2025, Номер unknown

Опубликована: Фев. 28, 2025

Язык: Английский

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