Supramolecular linear polymer formed by host–guest interactions of β-cyclodextrin dimers and polyacrylamide end-capped with adamantane

You, Qing; Zhang, Peng; Bai, Shixun; Huang, Weiya; Jia, Zhenfu; Zhou, Chengyu; Li, Dandan

doi:10.1016/j.colsurfa.2015.07.059

Cited by 13 publications

(6 citation statements)

References 20 publications

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“…A gel strength code method was adopted to determine the gelation time, which is by visual inspection. − The gel strength of different flowing, suspension, and tongue states was divided into nine categories, from A to I . In this method, ampules with polymer gel were inverted every 30 min until the gel strength did not change any more, and this time was marked as the gelation time.…”

Section: Methodsmentioning

confidence: 99%

Terpolymer Gel System Formed by Resorcinol–Hexamethylenetetramine for Water Management in Extremely High-Temperature Reservoirs

et al. 2017

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An in situ terpolymer gel system formed by resorcinol−hexamethylenetetramine (HMTA) was developed and systematically evaluated for water management in extremely high-temperature reservoirs. Suitable gelation time and favorable gelation performance were obtained by adjusting terpolymer and/or cross-linker system concentrations. With the increase of the terpolymer, the resorcinol−HMTA concentration increased both the gelation time and gelation performance. The gel system was prepared by deionized water and maintained good thermostability in a high-salinity environment. Very low concentrations of NaCl, KCl, and CaCl 2 can delay gelation time. After the critical concentrations are reached, these inorganic ions will boost the cross-linking reaction; however, the presence of MgCl 2 shortens gelation time. The gel system in ampules was kept stable at 150 °C for 5 months, and the differential scanning calorimetry measurement indicated that the gel system could be used for water management at temperatures up to 240 °C. Uniformly distributed three-dimensional network microstructures and dendritic structures among the gel grid pores could further increase the network structure strength and firmly lock water within the gel even under extremely high temperatures. The use of the gelation mechanism of an in situ terpolymer gel system formed by resorcinol−HMTA can help petroleum engineers control gelation time and performance.

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Section: Methodsmentioning

confidence: 99%

Terpolymer Gel System Formed by Resorcinol–Hexamethylenetetramine for Water Management in Extremely High-Temperature Reservoirs

et al. 2017

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“…GFP solution has excellent salt thickening effect under high salt condition. For PAM solution, the addition of salt ions compressed the thicknesses of the electric double layer of the carboxylate ions coming from the hydrolysis of amides caused by the electrolytes, 22 resulting in shrinkage of the molecule chains and a decrease in the hydrodynamic radius, which leaded to a decrease in viscosity. In GFP deionized aqueous solution, the interaction between cations and the carboxylate ions coming from the hydrolysis of amides prevented the expansion of molecular chains, which made intramolecular hydrogen bonds to be formed.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of ultra‐high concentration of salt‐resistant polyacrylamide

Zhao

Peng

Zhang

et al. 2020

Polymers for Advanced Techs

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Glucose, an environmentally friendly and renewable material, is modified differently in various fields. In the petrochemical industry, water-soluble polymer with salt resistance plays an important role in the production in high-salinity reservoirs. In this work, N,N-dimethyl ethanolamine was reacted with glucose to synthesis a polymerizable monomer Gf (N,N-dimethylaminoethylglucoside). Gf was polymerized with acrylamide in aqueous solution to obtain copolymer glucose modified polyacrylamide. The copolymer was characterized by Fourier transform infrared spectroscopy, 1 H-NMRspectroscopy, scanning electron microscopy, and thermogravimetric analysis. The temperature resistance, salt resistance, and shear resistance of the copolymer solution were evaluated. The results shown that the copolymer had excellent saltthickening effect, favorable temperature resistance, and shear resistance. We expect that this work would provide a new method for designing polymers with excellent temperature resistance, salt resistance, and shear resistance.

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“…Linear pCDs will not destroy the cavity structure of the CDs, so they have high potential for applications including for ion exchange, drug loading, separation, and adsorption. For example, the supramolecular linear polyacrylamide (SL-PAM) synthesized by You et al [ 23 ] is a combination of β-CD and adamantane-terminated polyacrylamide (AT-PAM). It was prepared by the interaction between the host and the guest.…”

Section: Synthesis Of Pcdsmentioning

confidence: 99%

Research Progress on Synthesis and Application of Cyclodextrin Polymers

et al. 2021

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Cyclodextrins (CDs) are a series of cyclic oligosaccharides formed by amylose under the action of CD glucosyltransferase that is produced by Bacillus. After being modified by polymerization, substitution and grafting, high molecular weight cyclodextrin polymers (pCDs) containing multiple CD units can be obtained. pCDs retain the internal hydrophobic-external hydrophilic cavity structure characteristic of CDs, while also possessing the stability of polymer. They are a class of functional polymer materials with strong development potential and have been applied in many fields. This review introduces the research progress of pCDs, including the synthesis of pCDs and their applications in analytical separation science, materials science, and biomedicine.

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Supramolecular linear polymer formed by host–guest interactions of β-cyclodextrin dimers and polyacrylamide end-capped with adamantane

Cited by 13 publications

References 20 publications

Terpolymer Gel System Formed by Resorcinol–Hexamethylenetetramine for Water Management in Extremely High-Temperature Reservoirs

Terpolymer Gel System Formed by Resorcinol–Hexamethylenetetramine for Water Management in Extremely High-Temperature Reservoirs

Synthesis of ultra‐high concentration of salt‐resistant polyacrylamide

Research Progress on Synthesis and Application of Cyclodextrin Polymers

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