Methods of investigation Measurement of Kerr effect by means of sinusoidal impulses as a tool for studying the dynamics of macromolecules in conductive solutions

Лезов, А. В.; Цветков, Н. В.

doi:10.1016/0032-3950(90)90064-d

Cited by 6 publications

(15 citation statements)

References 4 publications

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“…The equilibrium electrical birefringence (Kerr effect) was studied in rectangular-pulsed [33] and sine-pulsed [39] electric fields. To enhance the sensitivity, we used the same photoelectric detection circuit as that described above for measuring dynamic flow birefringence, but the elliptical rotary compensator provided the relative path difference Δλ/λ= 0.01 in this case.…”

Section: Characterizationmentioning

confidence: 99%

Conformational, optical, electro-optical, and dynamic characteristics of cross-linked poly(N-acryloyl-11-aminoundecanoic acid)

et al. 2014

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Polymerizable surfactants now attract a great interest due to high potential of their practical application as components of pseudostationary phase in micellar chromatography, drug carriers, and "building blocks" for molecular design of nanoparticles and nanostructured polymer materials, for encapsulation of various biological preparations. In the present work, we have studied poly(N-acryloyl-11-aminoundecanoic acid) (cross-linked comb-like polymer). Cross-linked polymers were obtained via copolymerization of the surfactant bearing double bond in hydrophobic tail with hydrophobic bifunctional cross-linker in micellar solution. Of special interest was the comparison between cross-linked and non-cross-linked polymers and influence of alkaline medium on characteristics of these samples. Non-cross-linked polymers were obtained by hydrolysis of the cross-linked product (treating with NaOH). The mixture of cyclohexanol and dioxane (1:1 volume ratio) was used as a solvent. Detailed studies of the obtained polymers by viscometry, dynamic light scattering, flow birefringence, and equilibrium and nonequilibrium electric birefringence were performed. It was established that during cross-linking process, two types of bonds are formed (the ones inside individual molecules and between several polymer chains). It was shown that crosslinked macromolecular nanoparticles can be transformed into comb-like polymers.

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Section: Characterizationmentioning

confidence: 99%

Conformational, optical, electro-optical, and dynamic characteristics of cross-linked poly(N-acryloyl-11-aminoundecanoic acid)

et al. 2014

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“…Electric birefringence can be studied only when orientation is low because macromolecules and small sized particles cannot be fully oriented in actually attainable fields [22,23]. The main types of electric fields used for studying relaxation processes are rectan gular impulse and periodic (sinusoidal) fields [9,24].…”

Section: (6)mentioning

confidence: 99%

“…Equations (24) and (25) belong to the class of incorrect problems [29]. The methods for their solu tion are associated with the introduction of additional conditions, and the desired function should satisfy these conditions (see for example, [30][31][32]).…”

Section: K X K Y F D D a X Ymentioning

confidence: 99%

“…Methods of Solution Consider the main methods for numerical solution of equations like (24). The regularization method pro posed by Tikhonov [33,34] involves the reduction of the problem on solving the initial integral equation to solving the problem on the search for the functional minimum as follows:…”

Section: Critical Review Of the Existing Approximatementioning

confidence: 99%

“…In the method of truncated singular value decomposition, Eqs. (24) and (25) are solved in terms of least squares, ,…”

Section: Critical Review Of the Existing Approximatementioning

confidence: 99%

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Analysis of polydispersity of macromolecular and nanodisperse systems by electrooptical methods

Babadzhanyants

Voitylov

et al. 2010

Polym. Sci. Ser. C

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This work presents the general statement of the mathematical problem for estimating the distri bution functions of particles with respect to their parameters from the data on electrooptical studies of dis persed systems. The most typical equations describing electrooptical effects in solutions of kinetically rigid macromolecules and nanoscale systems are given, and the method for their solution is proposed. Using model distribution functions, the proposed method is compared with the regularization method.

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Conformational and optical properties of macromolecules of some aliphatic-substituted cellulose esters

et al. 2013

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Methods of investigation Measurement of Kerr effect by means of sinusoidal impulses as a tool for studying the dynamics of macromolecules in conductive solutions

Cited by 6 publications

References 4 publications

Conformational, optical, electro-optical, and dynamic characteristics of cross-linked poly(N-acryloyl-11-aminoundecanoic acid)

Conformational, optical, electro-optical, and dynamic characteristics of cross-linked poly(N-acryloyl-11-aminoundecanoic acid)

Analysis of polydispersity of macromolecular and nanodisperse systems by electrooptical methods

Conformational and optical properties of macromolecules of some aliphatic-substituted cellulose esters

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