Kinetics of poly(3‐methacryloylamido propyl trimethyl ammonium chloride) initiated by different initiators

Wang, Yongji; Zhang, Yuejun

doi:10.1002/pat.5269

Cited by 3 publications

(9 citation statements)

References 20 publications

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“…It could be seen that the infrared absorption spectrum of PAC/PMAPTAC and PAC/PDMDAAC were not much different from that of PAC, there was no evidence of chemical reaction between polyaluminum and polymers. However, it could be seen that the PAC/PMAPTAC had the same peaks as PMAPTAC at 1530 and 1481 cm À1 , which were attributed to the asymmetric stretching vibration of the N H in the amide group and the methyl group in the quaternary ammonium group in PMAPTAC, 26 indicating the existence of PMAPTAC in composite. PAC/PDMDAAC had an absorption peak of flexural vibration similar to PDMDAAC at 1469 cm À1 , which was attributed to the asymmetric stretching vibration of the CH 3 group in PDMDAAC, 27 indicating the existence of PDMDAAC in composite.…”

Section: Flocculation Testmentioning

confidence: 94%

“…The peaks at 971, 1481, 1529, and 1644 cm À1 in curve of PMAPTAC were attributed to N + (CH 3 ) 3 , CH 3 in the quaternary ammonium group, N H and C═O groups in PMAPTAC, respectively. 26 The adsorption peaks at 3016 and 1467 cm À1 were assigned to the antisymmetric stretching vibration and bending vibration of the methyl groups in PDMDAAC, respectively, the absorption peak at 2936 cm À1 was the C H bond in the methyl group in PDMDAAC for antisymmetric stretching formed by vibration. 27 The Figure 1a verified the successful synthesis of PDMDAAC and PMAPTAC.…”

Section: Flocculation Testmentioning

confidence: 99%

“…PMAPTAC and PDADMAC were prepared by a radical polymerization method as previously reported, 26,27 the vacuum distillation at 60 C and about À0.095 MPa for 0.5 h was used to remove a small amount of volatile impurities before polymerization. The reaction equation could be seen in Figure 1.…”

Section: Synthesis Of Polymermentioning

confidence: 99%

“…24 In addition, the homopolymer products with high-molecular weight could be obtained due to the high-polymerization activity of MAPTAC. 25,26 Then the composite flocculants obtained from PMAPTAC and inorganic flocculant is expected to obtain better coordination and synergistic flocculation performance. However, to our knowledge there is little report about the physicochemical characterization and flocculants effect of composite flocculants obtained from PMAPTAC and inorganic flocculant.…”

Section: Introductionmentioning

confidence: 99%

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Physicochemical characterization and flocculation performance evaluation ofPAC/PMAPTACcomposite flocculant

Guo

Sun

et al. 2021

J of Applied Polymer Sci

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A novel inorganic-organic composite flocculant was prepared with polyaluminum chloride (PAC) and poly(methacrylamido propyl trimethyl ammonium chloride) (PMAPTAC). To understand the physicochemical characterization of PAC/ PMAPTAC and evaluate its flocculation efficiency, the interactions of PAC and cationic polymer were investigated, then the characterization and flocculation performance of PAC/PMAPTAC and PAC/Poly-dimethyldiallylammonium chloride (PDMDAAC) were compared. The results showed that there were obvious interactions between PAC and cationic polymer in composite flocculant. The cationic polymer chain exhibited a coiled state in PAC solution, and the curly degree of PMAPTAC chain was lower than that of PDMDAAC due to the intermolecular association of methyl of PMAPTAC. The cationic polymer enhanced the charge neutralization ability of PAC and changed the aluminum hydrolysis polymerization species of PAC from low and medium polymeric species to high-polymeric species. The flocculation sedimentation experiments turned out that the charge neutralization and bridging ability of PAC/PMAPTAC was higher than that of PAC/PDMDAAC, and the increase of molecular weight or content of PMAPTAC in PAC/PMAPTAC could enhance the charge neutralization and adsorption bridging ability simultaneously. The enhanced effects may come from the exist of polymer and the interactions between PAC and cationic polymer in composite flocculant.

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Section: Flocculation Testmentioning

confidence: 94%

Section: Flocculation Testmentioning

confidence: 99%

Section: Synthesis Of Polymermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Physicochemical characterization and flocculation performance evaluation ofPAC/PMAPTACcomposite flocculant

Guo

Sun

et al. 2021

J of Applied Polymer Sci

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“…Losada et al 16–18 examined the impact of strong electrostatic interactions of doubly charged quaternary ammonium salts on free radical solution polymerization, and they found that the chemical structure of the cationic monomer, particularly the location of the ionic group, significantly impacted the polymerization reactivity of the monomer. Wang et al 19 examined the polymerization kinetics of MAPTAC initiated by ammonium persulfate (APS) and 2,2′‐azobis(2‐methylpropionamide) dihydrochloride (V50). The polymerization activation energies under the given conditions were E aV = 144.76 kJ/mol and E aA = 153.09 kJ/mol, respectively.…”

Section: Introductionmentioning

confidence: 99%

The comparison of polymerization activity of typical cationic quaternary ammonium salt monomers

Ming,

Li,

Sun

et al. 2024

Polymers for Advanced Techs

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The cationic water‐soluble polymers, which are widely used in many areas such as papermaking and separation process, are typically synthesized through polymerization of cationic monomers represented by quaternary ammonium salt. In this work, the polymerization reaction kinetics of three typical quaternary ammonium salt cationic monomers including acryloyl oxygen ethyl trimethyl ammonium chloride (DAC), methyl acryloyl oxygen ethyl trimethyl ammonium chloride (DMC), and methyl acrylamide propyl trimethyl ammonium chloride (MAPTAC) was examined by using the dilatometer method. The results showed that the polymerization rate of all three monomers increased with the increase of initiation temperature, monomer concentration, and initiator concentration. Under the same conditions, the polymerization activity of the three monomers followed the order: DAC > DMC > MAPTAC. The activation energies for the polymerization reaction under the specified conditions were EaDAC = 138.97 kJ/mol, EaDMC = 141.24 kJ/mol, and EaMAPTAC = 226.97 kJ/mol, respectively. The polymerization rate equations were RpDAC = k1[M]4.25[I]0.51, RpDMC = k2[M]3.77[I]0.50, and RpMAPTAC = k3[M]3.30[I]0.49. The polymerization activity of the monomers may be influenced by electronic effects and steric hindrance of the monomer structure. This work has provided a theoretical and experimental foundation for the actual work of structural design and preparation of cationic water‐soluble polymers.

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The characteristics and flocculation performance of hydrophobic association poly‐(3‐methacryloylamido propyl trimethyl ammonium chloride)

Guo,

Li,

Ming

et al. 2024

J of Applied Polymer Sci

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The cationic polymer plays a crucial role in the flocculation process for solid–liquid separation. A hydrophobic‐associated cationic polymer was prepared through micellar free‐radical polymerization of cationic monomer 3‐methyl acrylamide propyl trimethyl ammonium chloride (MAPTAC) and hydrophobic monomer Poly (ethylene glycol) Octadecyl methacrylate (OEMA). The Poly‐MAPTAC‐OEMA can form network structure through intermolecular hydrophobic association in aqueous solution, which leads to the solution viscosity increase and the salt thickening property. The critical associating concentrations (CACs) of Poly‐MAPTAC‐OEMA are 5818–6992 mg/L in aqueous solution. For the diatomite suspensions, at the dosage above about 5 mg/L, the Poly‐MAPTAC‐OEMA can show higher flocculation efficiency compared with Poly‐MAPTAC. Specifically, at the dosage of 8 mg/L, the enhancement rate of sedimentation rate can reach 7.27%–32.31%. Meanwhile, the hydrophobic association mainly enhances the bridging ability but has no significant effect on the improvement of the electric neutralization ability of Poly‐MAPTAC‐OEMA. The flocculation performance‐enhanced dosage of Poly‐MAPTAC‐OEMA is obviously lower than the CAC of Poly‐MAPTAC‐OEMA; this may be because during the flocculation process, the Poly‐MAPTAC‐OEMA first absorb and deeply concentrate on the particle surface, and then the hydrophobic association and bridging enhancement of Poly‐MAPTAC‐OEMA can occur more easily on the particle surface.

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Kinetics of poly(3‐methacryloylamido propyl trimethyl ammonium chloride) initiated by different initiators

Cited by 3 publications

References 20 publications

Physicochemical characterization and flocculation performance evaluation ofPAC/PMAPTACcomposite flocculant

Physicochemical characterization and flocculation performance evaluation ofPAC/PMAPTACcomposite flocculant

The comparison of polymerization activity of typical cationic quaternary ammonium salt monomers

The characteristics and flocculation performance of hydrophobic association poly‐(3‐methacryloylamido propyl trimethyl ammonium chloride)

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