Zur chemishen Struktur von Poly(dimethyl‐diallyl‐ammoniumchlorid)

Wandrey, C.; Jaeger, Werner; Reinisch, G.; Hahn, Mathias; Engelhardt, G.; Jancke, H.; Ballschuh, D.

doi:10.1002/actp.1981.010320310

Cited by 41 publications

(12 citation statements)

References 14 publications

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“…This phenomenon was observed in the copolymerization of lignosulfonate‐acrylonitrile‐methyl methacrylate copolymers (i.e. isolated polyacrylic chains from the copolymer) …”

Section: Resultsmentioning

confidence: 99%

Lignin‐g‐poly(acrylamide)‐g‐poly(diallyldimethyl‐ ammonium chloride): Synthesis, Characterization and Applications

2018

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The search for a renewable substitute to petroleum‐based products has fueled increasing research on lignin, an under‐utilized product from pulping processes. In this work, lignin was copolymerized with acrylamide (AM) and diallyldimethylammonium chloride (DADMAC) under acidic conditions with Na2S2O8 as an initiator, generating a cationic water‐soluble lignin‐g‐P(AM)‐g‐P(DADMAC) copolymer. The optimal reaction conditions, using a 5×4 factorial design experiment, were determined to be an AM/DADMAC/lignin molar ratio of 5.5:2.4:1, 90 °C, 0.26 mol L−1 of lignin, and pH 2. Under the optimal reaction conditions, the resulting lignin‐g‐P(AM)‐g‐P(DADMAC) copolymer was 83 % soluble in an aqueous solution (at 10 g L−1) and at neutral pH. The copolymer had a charge density of 1.27 meq g−1, molecular weight of (1.33±0.08) ×106, an AM grafting ratio of 112 wt %, and a DADMAC grafting ratio of 20 wt %. In addition, the activation energy for producing this copolymer as well as the thermal and rheological properties of the copolymer were determined. The flocculation performance of lignin‐g‐P(AM)‐g‐P(DADMAC) copolymer was evaluated in a kaolin suspension, which showed that the lignin copolymer had a comparable flocculation efficiency with the synthetic analogue of P(AM)‐g‐P(DADMAC) at pH 6.

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“…This phenomenon was observed in the copolymerization of lignosulfonate‐acrylonitrile‐methyl methacrylate copolymers (i.e. isolated polyacrylic chains from the copolymer) …”

Section: Resultsmentioning

confidence: 99%

Lignin‐g‐poly(acrylamide)‐g‐poly(diallyldimethyl‐ ammonium chloride): Synthesis, Characterization and Applications

2018

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“…Carbon-13 nuclear magnetic resonance ( 13 C-NMR) has shown that during the radical homopolymerization reaction, five-membered rings of DADMAC were exclusively formed (Lancaster et al, 1976;Masterman et al, 1994;Valade et al, 2009;Wandrey et al, 1981) and the rings were connected by ethylene bridges in the 3,4-position (Masterman et al, 1994;Wandrey et al, 1981). According to Wandrey et al, 1999, poly-DADMAC synthesized by free radical polymerization in water media at low conversion using ammonium persulfate as an initiator contains only 0.1-3.0% pendant double bonds.…”

Section: Introductionmentioning

confidence: 99%

Copolymers of Diallyldimethylammonium Chloride and Vinyl Ether of Monoethanolamine: Synthesis, Flocculating, and Antimicrobial Properties

Dauletov

Nuraje

Abdiyev

et al. 2019

J Surfact & Detergents

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N,N‐diallyl‐N,N‐dimethylammonium chloride (DADMAC) and vinyl ether of monoethanolamine (VEMEA) copolymer P(DADMAC‐VEMEA) were synthesized using radical polymerization in water media using ammonium persulfate as an initiator. The synthesis of this copolymer was investigated over a wide composition range at low conversion levels. The viscosity of the copolymers was measured in aqueous 1 M NaCl. Flocculating action and antimicrobial activities of the copolymers P(DADMAC‐VEMEA) against microbacteria and sulfate‐reducing bacteria (SRB) were studied. Synthesized copolymers had flocculating effects and can be used to purify wastewater from particles of bentonite clays. Also, the copolymer with a molar composition [DADMAC]: [VEMEA] = (80÷20):(20÷80) retarded the population of both bacteria, Gram‐positive (Staphylococcus aureus) and Gram‐negative (Escherichia coli) in the diffusion zone. Furthermore, the copolymer with a molar composition [DADMAC]:[VEMEA] = (90÷10):(20÷80) had bactericidal properties against SRB. Minimum inhibitory concentration (MIC) of the copolymer varied from 0.01% to 0.1% depending on the molar composition of the copolymer.

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“…The structure of DADMAC, poly(DADMAC) and polymerization process were shown in Figure 1. 2 Due to versatile applications of poly(DADMAC), such as in food, medicine and wastewater treatment industry, many research works involving the polymerization mechanism, kinetics, structure as well as properties of polymer have been studied in detail since eighties of last century, [3][4][5] while the information on UV-and γ-radiation polymerization of DADMAC in aqueous solution has received less attention than the great number of commercial applications of this polyelectrolyte. Generally, chemical methods or isolation and weighing of polymer are used to measure the rate of polymerization.…”

Section: Introductionmentioning

confidence: 99%

A new method to measure the conversion of radiation polymerization of electrolyte monomer diallyldimethylammonium chloride in dilute aqueous solution

et al. 2003

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The dependence of electrical conductivity on concentrations of diallyldimethylammonium chloride (DADMAC) monomer, linear poly(DADMAC) and their mixture monomer/poly(DADMAC) in dilute aqueous solution exhibits a linear relationship. It was possible to calculate conversion of DADMAC polymerization by measuring its electric conductivity. Although the electrical conductivity of the poly(DADMAC) solution decreased with increasing its molecular weight, in the process of UV or ionizing radiation polymerization the molecular weight of the polymers could be kept constant in the case of fixed temperature, UV-luminous intensity or dose rate. Based on the method mentioned above, the kinetics of UV induced polymerization of DADMAC in aqueous solution was studied; the overall activation energy of polymerization of DADMAC in the water phase was calculated to be 18.8 kJ mol -1 .γ-Radiation-induced polymerization of DADMAC in aqueous solution as a function of absorbed dose was studied as well. The conversion of DADMAC increased quickly with dose before 30 kGy and then increased slowly. The experimental data of both UV-and γ-induced polymerization were verified to be reliable by inverted ultracentrifugation method.

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Zur chemishen Struktur von Poly(dimethyl‐diallyl‐ammoniumchlorid)

Cited by 41 publications

References 14 publications

Lignin‐g‐poly(acrylamide)‐g‐poly(diallyldimethyl‐ ammonium chloride): Synthesis, Characterization and Applications

Lignin‐g‐poly(acrylamide)‐g‐poly(diallyldimethyl‐ ammonium chloride): Synthesis, Characterization and Applications

Copolymers of Diallyldimethylammonium Chloride and Vinyl Ether of Monoethanolamine: Synthesis, Flocculating, and Antimicrobial Properties

A new method to measure the conversion of radiation polymerization of electrolyte monomer diallyldimethylammonium chloride in dilute aqueous solution

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