Copolymers of diallyldimethylammonium chloride and 2-(diallyl(methyl) ammonio) acetate: Effect of composition and ionic strength on conformational properties

Цветков, Н. В.; Лезов, А. А.; Vlasov, Petr S.; Лезова, А. А.; Samokhvalova, S. A.; Lebedeva, E. V.; Polushina, G. E.

doi:10.1016/j.eurpolymj.2016.09.026

Cited by 13 publications

(6 citation statements)

References 27 publications

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“…Calf thymus DNA was purchased from Sigma-Aldrich and used as received. PDAHMAC was synthesized as described previously by the radical polymerization of N , N -diallyl- N -hexyl- N -methylammonium chloride [ 38 , 41 ]. The monomer (2.225 g, 9.6 mmol), 4,4′-azobis(4-cyanovaleric acid) (84 mg, 0.3 mmol) and deionized water (0.690 g) were vortexed in a glass ampoule until dissolution, the mixture was subjected to three freeze-pump-thaw cycles in order to remove oxygen, sealed and heated at 70 °C for 13 h. The highly viscous product was dissolved in water and dialyzed against deionized water for three days using Spectra/Por MWCO 6-8 000 (Serva, Heidelberg, Germany).…”

Section: Methodsmentioning

confidence: 99%

DNA Interaction with a Polyelectrolyte Monolayer at Solution—Air Interface

et al. 2021

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The formation of ordered 2D nanostructures of double stranded DNA molecules at various interfaces attracts more and more focus in medical and engineering research, but the underlying intermolecular interactions still require elucidation. Recently, it has been revealed that mixtures of DNA with a series of hydrophobic cationic polyelectrolytes including poly(N,N-diallyl-N-hexyl-N-methylammonium) chloride (PDAHMAC) form a network of ribbonlike or threadlike aggregates at the solution—air interface. In the present work, we adopt a novel approach to confine the same polyelectrolyte at the solution—air interface by spreading it on a subphase with elevated ionic strength. A suite of techniques–rheology, microscopy, ellipsometry, and spectroscopy–are applied to gain insight into main steps of the adsorption layer formation, which results in non-monotonic kinetic dependencies of various surface properties. A long induction period of the kinetic dependencies after DNA is exposed to the surface film results only if the initial surface pressure corresponds to a quasiplateau region of the compression isotherm of a PDAHMAC monolayer. Despite the different aggregation mechanisms, the micromorphology of the mixed PDAHMAC/DNA does not depend noticeably on the initial surface pressure. The results provide new perspective on nanostructure formation involving nucleic acids building blocks.

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Section: Methodsmentioning

confidence: 99%

DNA Interaction with a Polyelectrolyte Monolayer at Solution—Air Interface

et al. 2021

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“…31 The polyelectrolytes of this class are stable towards hydrolysis in a wide pH range. 32 The purity of polymers was confirmed by NMR 1 H spectra (Figs. S1-S6 of the Supporting information).…”

Section: Methodsmentioning

confidence: 99%

“…PDABMAC and PDAHMAC were synthesized according to the method described previously . The polyelectrolytes of this class are stable toward hydrolysis in a wide pH range . The purity of polymers was confirmed by NMR 1 H spectra (Figures S1–S6 of the Supporting Information).…”

Section: Methodsmentioning

confidence: 99%

Network Formation of DNA/Polyelectrolyte Fibrous Aggregates Adsorbed at the Water–Air Interface

et al. 2019

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It is discovered that complexes of DNA and hydrophobically modified polyelectrolytes form a rigid network of threadlike or fibrous aggregates at the liquidgas interface whose morphology can dramatically affect the mechanical properties. While mixed solutions of DNA and poly(N,N-diallyl-N,N-dimethylammonium chloride) (PDADMAC) exhibit no notable surface activity, the complexes formed from DNA with poly(N,N-diallyl-N-butyl-N-methylammonium chloride) are surface active, in contrast to either of the separate components. Further, complexes of DNA and poly(N,N-diallyl-N-hexyl-N-methylammonium chloride) (PDAHMAC) with its longer hydrophobic side chains exhibit pronounced surface activity with values of the surface pressures up to 16 mN/m and dynamic surface elasticity up to 58mN/m. If the PDAHMAC nitrogen to DNA phosphate molar ratio, N/P, is between 0.6 and 3, abrupt compression of the adsorption layer leads unexpectedly to a noticeable decrease of the surface elasticity. Application of imaging techniques reveals that this effect is a consequence of the destruction of a rigid network of threadlike DNA/polyelectrolyte aggregates at the interface. The toroidal aggregates, which are typical for the bulk phase of DNA/PDADMAC solutions in this range of N/P ratios, are not observed in the surface layer. The observed link between the mechanical properties and interfacial morphology of surface active complexes formed from DNA with hydrophobically modified polyelectrolytes indicates that tuning the polyelectrolyte hydrophobicity in these systems may be a means to develop their use in applications ranging from nonviral gene delivery vehicles to conductive nanowires.

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“…[17][18][19][20][21][22] Meanwhile, DMDAAC is also usually copolymerized with other unsaturated monomers to form cationic or amphoteric polymers. [23][24][25][26][27][28][29][30][31] During the preparation of DMDAAC-based homopolymer and copolymer, the solution polymerization, inverse emulsion polymerization, and dispersion polymerization are the common methods. In our previous work, 32 copolymer of DMDAAC and a nonionic block polyether macromonomer (PEP-65) was prepared as a novel reverse demulsifier, which has both advantages of cationic reverse demulsifier and nonionic reverse demulsifier and has very well reverse demulsification performance.…”

Section: Introductionmentioning

confidence: 99%

“…Poly(diallyldimethylammonium chloride)(PDMDAAC) is a cyclic polycation, which has been widely used in many industrial and biological applications, such as flocculant in wastewater treatment, biocatalyst agents in biological, antimicrobial biocide, medical, food applications, and layer‐by‐layer assembly 17–22 . Meanwhile, DMDAAC is also usually copolymerized with other unsaturated monomers to form cationic or amphoteric polymers 23–31 . During the preparation of DMDAAC‐based homopolymer and copolymer, the solution polymerization, inverse emulsion polymerization, and dispersion polymerization are the common methods.…”

Section: Introductionmentioning

confidence: 99%

Copolymerization behavior of diallyldimethylammonium chloride‐nonionic macromonomer in water‐ether mixture solution and flotation performance of the copolymer for treating oily wastewater

Duan

Wang

et al. 2021

J of Applied Polymer Sci

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Copolymerization of cationic monomer and nonionic macromonomer in water-ether mixture solution is useful for preparing the functional polymer. Copolymer of diallyldimethylammonium chloride (DMDAAC) and a nonionic block polyether macromonomer (PEP-65) has been found that has very well reverse demulsification performance, but the polymerization phenomenon cannot be described by any reported polymerization method. In this paper, the copolymerization behavior including polymer mechanism, polymerization kinetics, and reactivity rate of DMDAAC and PEP-65 in the mixture solution of water and propylene glycol methyl ether (PGME) was studied for explaining the special copolymerization phenomenon and its flotation performance for treating oily wastewater was also investigated. The results showed that DMDAAC-PEP-65 copolymerization in water-PGME mixture solution has four stages and has both characteristics of emulsion polymerization and dispersion polymerization. In addition, the copolymer also has excellent flotation performance.

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Copolymers of diallyldimethylammonium chloride and 2-(diallyl(methyl) ammonio) acetate: Effect of composition and ionic strength on conformational properties

Cited by 13 publications

References 27 publications

DNA Interaction with a Polyelectrolyte Monolayer at Solution—Air Interface

DNA Interaction with a Polyelectrolyte Monolayer at Solution—Air Interface

Network Formation of DNA/Polyelectrolyte Fibrous Aggregates Adsorbed at the Water–Air Interface

Copolymerization behavior of diallyldimethylammonium chloride‐nonionic macromonomer in water‐ether mixture solution and flotation performance of the copolymer for treating oily wastewater

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