ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTQuantitative theory of the globule-to-coil transition. 1. Link density distribution in a globule and its radius gyrationA. Yu. Grosberg D. V. KuznetsovCite this: Macromolecules 1992, 25, 7, 1970–1979Publication Date (Print):March 1, 1992Publication History Published online1 May 2002Published inissue 1 March 1992https://pubs.acs.org/doi/10.1021/ma00033a022https://doi.org/10.1021/ma00033a022research-articleACS PublicationsRequest reuse...

A new quantitative theory for polyelectrolytes in salt free dilute solutions is developed. Depending on the electrostatic interaction strength, can undergo strong stretching (with polyelectrolyte dimension R_g\sim l_B^{1/3}N, where l_B Bjerrum length and N number of chain segments) or compression l_B^{-1/2}N^{1/3}). polymer collapse occurs as a first-order phase transition due to accompanying counterion condensation.

We report the first accurate measurements of partial heat capacity poly(N-isopropylacrylamide) hydrogels with varying cross-link density. When density is increased, transition broadens and temperature decreases, while enthalpy, entropy, increment do not practically change. The negative, Δtcp = −0.63 ± 0.04 J/g/K. This indicates formation a hydrophobic core gel upon transition. polymer network in approaches unfolded linear at low temperatures, indicating complete disordering under these...

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSingle-chain collapse or precipitation? Kinetic diagram of the states a polymer solutionA. Yu. Grosberg and D. V. KuznetsovCite this: Macromolecules 1993, 26, 16, 4249–4251Publication Date (Print):August 1, 1993Publication History Published online1 May 2002Published inissue 1 August 1993https://doi.org/10.1021/ma00068a027RIGHTS & PERMISSIONSArticle Views423Altmetric-Citations82LEARN ABOUT THESE METRICSArticle Views are COUNTER-compliant sum full...

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTQuantitative theory of the globule-to-coil transition. 4. Comparison theoretical results with experimental dataA. Yu. Grosberg and D. V. KuznetsovCite this: Macromolecules 1992, 25, 7, 1996–2003Publication Date (Print):March 1, 1992Publication History Published online1 May 2002Published inissue 1 March 1992https://pubs.acs.org/doi/10.1021/ma00033a025https://doi.org/10.1021/ma00033a025research-articleACS PublicationsRequest reuse permissionsArticle...

We present first results of studies the volume phase transition in poly(N-isopropylacrylamide) (NIPA) hydrogels by high-sensitive differential scanning calorimetry (HS−DSC). examine behavior low-concentrated gels at different rates and discuss dependencies parameters upon heating rate. It is shown that HS−DSC measurements rate 0.125 K/min provide closely approximating equilibrium ones every respect except for value temperature. At higher rates, temperature appears to be practically...

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTQuantitative theory of the globule-to-coil transition. 2. Density-density correlation in a globule and hydrodynamic radius macromoleculeA. Yu. Grosberg D. V. KuznetsovCite this: Macromolecules 1992, 25, 7, 1980–1990Publication Date (Print):March 1, 1992Publication History Published online1 May 2002Published inissue 1 March 1992https://pubs.acs.org/doi/10.1021/ma00033a023https://doi.org/10.1021/ma00033a023research-articleACS PublicationsRequest...

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTQuantitative theory of the globule-to-coil transition. 3. Globule-globule interaction and polymer solution binodal spinodal curves in globular rangeA. Yu. Grosberg D. V. KuznetsovCite this: Macromolecules 1992, 25, 7, 1991–1995Publication Date (Print):March 1, 1992Publication History Published online1 May 2002Published inissue 1 March 1992https://pubs.acs.org/doi/10.1021/ma00033a024https://doi.org/10.1021/ma00033a024research-articleACS...

In the world witnessing profound transformations at all levels of interstate relations as well search for effective forms international interaction, networks have already proved to be among most patterns cooperation. Informal, flexible, stable, cooperative, multilevel and pluralistic been promoting a new architecture 21st century politics, with BRICS being one its manifestations. also represent special type – transregional one, which combines resources powerful states from different regional...

This article examines China’s position on the Ukrainian ‘Euromaidan’ crisis over Crimea, war in southeast of Ukraine and sanctions against Russia. A complex set reasons (economic, political geopolitical) have caused heightened interest part China events Ukraine. From start, kept a very low profile right up to late February 2014, made no strong statements shunned any diplomatic initiatives. Thereafter, official stand began exhibit increasingly frequent signs anti-Western rhetoric, an...

A new method is proposed for a quantitative investigation of interchain interactions in poor solvent within the framework Lifshits type mean-field approximation.Density distributions and interaction free energy two globules equilibrated at an arbitrary distance ( from each other

In this article, the authors aim to differentiate various categories of peasantry according views on property develop an optimal research approach that will allow for objective and comprehensive analysis attitudes behavior peasant population Russia during Stolypin course agrarian policy pursued by autocracy. The study shows validity using peasantry's attitude as one key criteria assessing degree efficiency reform. selected criterion allows show evolution depending social characteristics a...

The term “production capacity” has always been one of the most important in theory and practice production management an engineering enterprise. In current conditions issues determining classifying capacity manufacturing enterprises are particular significance. Possessing reliable data on a enterprise can determine output equipment workload level, run available facilities effectively. reliability information essential for decision-making depends methodology enterprises. purpose study is to...

Glass-ceramic composites based on blast furnace slag have unique mechanical properties and can be used as wear-resistant lining of mining chemical equipment, electrical insulators, technical decorative materials in a number other areas. In this work, samples synthetic stone casting with various additives, including sand, glass cutting reagents, increasing the degree crystallinity melting products, were made. Studies obtained products shown that highest are characterized by material basis...

The modeling technique was proposed for the phase formation in CaO‒MgO‒Al 2 O 3 ‒SiO ‒FeO‒Fe multicomponent oxide system. can be used to predict equilibrium composition both refractory and refractory-slag systems, as well modify metallurgical slag's chemical composition, extent unit's service life, order attaint systems mineral binding properties.Ill. 2. Ref. 7. Tab. 8.

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