Synthesis and characterization of thermo-insensitive, water-soluble associative polymers with good thickening properties at low and high temperatures

Lara-Ceniceros, Tania E.; Cadenas‐Pliego, Gregorio; Rivera-Vallejo, Claudia; León, Ramón Díaz de; Coronado, Alejandro; Jiménez‐Regalado, Enrique J.

doi:10.1007/s10965-014-0511-7

Cited by 17 publications

(8 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This diminution in the viscosity of polymer solution versus the increase of temperature was expected and previously reported in the literature which was attributed to the solvation effect of PAM with the augmentation of temperature. [7] Rheological measurement of different concentration TBC1 was carried out at different temperature and viscosity data revealed in the Figure 10A. It is worth to mentioning that this polymer is characterized by the presence of a thermo-responsive block (PNIPAM) into polymer structure and based on the rheometry analysis, the molecular weight of this block is ca.…”

Section: Thickening Measurementsmentioning

confidence: 99%

“…[6] In an aqueous media, the hydrophobic groups distributed into the backbone of associating copolymers are able to associate each other for inducing the formation of reversible physical networks which could conducted to an increase in the viscosity of the polymeric solution. Based on the both composition and chemical structure, some copolymers are considered as smart materials due to their reactions in response to the exposition to an external physical or chemical stimuli such as: temperature, [7,8] pH, [9,10] among others. The most common and relevant thermo-associative (co)polymers reported in the literature often contained the presence of polyN-isopropylacrylamide (PNIPAM) block.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Thickening behavior of thermo‐associative water soluble multiblock copolymers under redox RAFT polymerization

Maldonado‐Textle

Jiménez‐Regalado

Thomas

2022

Polymer Engineering & Sci

View full text Add to dashboard Cite

In this study, the synthesis of thermo‐associative water soluble multiblock copolymers is reported. A trithiocarbonate functionalized polyacrylamide (PAM) was prepared and subsequently utilized in the preparation of three series of thermo‐associative copolymers by addition of N‐isopropylacrylamide (NIPAM) and acrylamide (AM) until reaching a nonablock copolymer with four thermo‐associative blocks distributed into the backbone of polymer. Reactions were performed at 25 °C using a tertbutyl hydroperoxyde (TBHP) and ascorbic acid (As.Ac.) as redox initiator, and S,S′‐Bis (α,α’‐dimethyl‐α”‐acetic acid)‐trithiocarbonate (DMAT) as chain transfer agent. The targeted molecular weight (MnTheo) of PAM was maintained constant (10,000 g/mol) while the expected Mntheo of polyN‐isopropylacrylamide (PNIPAM) was varied from 10,000, 15,000, and 20,000 g/mol, respectively. The synthesized copolymers were characterized by infrared (IR), nuclear magnetic resonance (NMR), size exclusion chromatography (SEC) for determining the structure of materials, whereas ultraviolet (UV) analysis allowed to get access to the cloud point temperature (Tcp) of polymers. Rheological analyses were carried out for examining the effect of thermo‐responsive block on the thickening behavior of aqueous polymer solutions. These analyses were performed at different concentration from 1 to 20 wt. % varying the temperature of measurements from 25, 30, 40, 50, 60, and 70 °C. Results confirmed the influence of the size of thermo‐responsive blocks on the viscosity of these copolymers.

show abstract

Section: Thickening Measurementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thickening behavior of thermo‐associative water soluble multiblock copolymers under redox RAFT polymerization

Maldonado‐Textle

Jiménez‐Regalado

Thomas

2022

Polymer Engineering & Sci

View full text Add to dashboard Cite

show abstract

“…The previously reported refractive index (dn/dc = 0.109) was used for analysis of hydrophobically modified associating polymers. 44…”

Section: Multi Angle Light Scatteringmentioning

confidence: 99%

“…Data were processed through the Astra 7.2.11 software and baselines were optimized LS 11 corresponding to the angle 90° and applied to all LS signals. The previously reported refractive index (dn/dc = 0.109) was used for analysis of hydrophobically modified associating polymers 44 …”

Section: Experimental Partmentioning

confidence: 99%

Behavior study of a thermo‐responsive hydrophobically associative water‐soluble terpolymer in laboratory test with heavy crude oil

Torres‐Martínez

Pérez-Álvarez²,

Jiménez‐Regalado³

et al. 2022

J of Applied Polymer Sci

View full text Add to dashboard Cite

In this work, a thermo‐responsive hydrophobically associative water‐soluble terpolymer was prepared and evaluated as polymer flooding in laboratory tests versus a heavy crude oil from a carbonated reservoir in southern Mexico. Terpolymer of acrylamide, N‐isopropylacrylamide and N,N′‐dihexylacrylamide were synthesized via micellar free radical polymerization. Reaction was carried out at 50°C using sodium dodecyl sulfonate as surfactant and 4‐(4′‐azobis)cyanovaleric acid as initiator. The terpolymer was characterized by nuclear magnetic resonance. Steady shear viscosity of polymer solutions at different concentrations was determined in the presence of NaCl (from 1 to 5 wt%) at different temperatures (from 25 to 120°C). Heavy crude oil sample was characterized and revealed a viscosity of 2. 26 Pa s, 10.21° API with a content of Saturates, Aromatics, Resins, Asphaltenes of 26.4, 38.5, 22.3, and 12.8, respectively. The crude oil recovery of polymer at 2 and 3 wt% revealed a surface tensions of 49.6 and 48.2 mN × m and adsorption capacities of 1.33 and 1.77 wt%. Finally, polymer solutions at 2 and 3 wt% showed a contact angle between 29.6 and 26.5° and a crude oil recovery of 68.3 and 75.3%, respectively.

show abstract

“…The properties of hydrophobically associated polymers in water solutions are closely related to their molecular structures, especially the structures, concentrations, and distribution of hydrophobic groups. Generally, a hydrophobic monomer, such as N-alkyl acrylamide (C4-12) [13,14], N,N-dialkylacrylamide (C 4-12) [15,16], styrene derivatives [17], or F-containing acrylate [18][19][20], was used to react with anionic monomer (e.g., acrylamide, sodium acrylate, or 2methyl-2-acrylamide propyl sulfonic sodium) via ternary copolymerization to form a polymer aqueous solution with high surface activity and viscosifying ability. Hill et al found that when the concentrations of hydrophobic groups were the same, the hydrophobically associated polymers with hydrophobic micro blocks outperformed irregular hydrophobic association polymers in hydrophobic association [13].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization, and Aqueous Properties of an Amphiphilic Terpolymer with a Novel Nonionic Surfmer

et al. 2018

International Journal of Polymer Science

View full text Add to dashboard Cite

A series of surfactive amphiphilic polymer PAADs were prepared from the copolymerization of sodium acrylate, dodecyl polyoxyethylene acrylate (DPA, a surfmer), and acrylamide under the action of a mixed initiating agent consisting of ammonium persulfate-sodium bisulfite/2,2′-azobis[2-(2-imidazolin-2-yl) propane] dihydrochloride. The aggregative behaviors of PAADs were explored by 13C nuclear magnetic resonance, a viscometer, and a surface tension instrument. It was found that the apparent viscosity and surface activity of PAADs were significantly improved by the increase of average sequence length of hydrophobic micro blocks, strong intermolecular hydrophobic association, or the formation of mixed micelles between hydrophobic micro blocks and micromolecular surface-active agent. The introduction of long-chain alkyls on molecular chains prolonged the average sequence length of hydrophobic micro blocks in molecular chains and enhanced the hydrophobic association between molecular chains and the tight arrangement of molecular chains on water surfaces, thereby increasing the surface activity. Moreover, the anionic monomer sodium acrylate on molecular chains, via electrostatic repulsion, promoted the conversion from intrachain association to intermolecular association and thereby facilitated the formation of dense interfacial films, enhancing the surface activity of water solutions. Then, the anion surfmer sodium dodecylbenzenesulfonate interacted with the hydrophobic micro blocks on the molecular chains to form mixed micelles, which accelerated the interchain association and enhanced the polymer surface activity. The novel polymeric micelle with higher viscosifying ability and surface activity was expected to be a promising oil drive agent for tertiary oil recovery.

show abstract

Synthesis and characterization of thermo-insensitive, water-soluble associative polymers with good thickening properties at low and high temperatures

Cited by 17 publications

References 20 publications

Thickening behavior of thermo‐associative water soluble multiblock copolymers under redox RAFT polymerization

Thickening behavior of thermo‐associative water soluble multiblock copolymers under redox RAFT polymerization

Behavior study of a thermo‐responsive hydrophobically associative water‐soluble terpolymer in laboratory test with heavy crude oil

Synthesis, Characterization, and Aqueous Properties of an Amphiphilic Terpolymer with a Novel Nonionic Surfmer

Contact Info

Product

Resources

About