Dynamics of associative polymers
WebApr 25, 2024 · Current progress in understanding the dynamics of associating polymers is reviewed, with examples including both ionic and hydrogen bonding associations. A … Webfurther analyze its associative behavior, SAXS and oscillation experiments were also conducted. 2. Background theory 2.1 Scaling behavior of associative polymer solution When concentration is well above the gelation point (f >2f g), the dynamics of unentangled associative polymer solutions can be described by sticky Rouse model.4,30 The ...
Dynamics of associative polymers
Did you know?
WebNov 1, 2024 · 1 State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022 Changchun, China; 2 School of Applied Chemistry and Engineering, University of Science and Technology of China, 230026 Hefei, China; a) Author to whom correspondence should be addressed; … WebFeb 14, 2006 · We investigate the steady and transient shear and extensional rheological properties of a series of model hydrophobically modified ethoxylate−urethane (HEUR) …
WebJun 28, 2024 · Abstract: We design and synthesize unentangled associative polymers carrying unprecedented high fractions of stickers, up to eight per Kuhn segment, that can … WebAbstract. Current progress in understanding the dynamics of associating polymers is reviewed, with examples including both ionic and hydrogen bonding associations. A particular emphasis is placed on quantification of the strength of the interaction that sets …
WebIn this work, equilibrium molecular dynamics is used to predict the change in the Helmholtz free energy (Δ A) for solutions of associative polymers of the telechelic type. Δ A is calculated using the thermodynamic integration method, wherein molecular chains are simulated in a coarse-grain scale within an NVT ensemble. WebDynamic light scattering from the polymer molecules themselves shows that chain relaxation in hmHEC is dominated by slow concentration-dependent processes due to …
WebApr 13, 2024 · Figure 2 shows the LVE-NLVE transition and the strain magnitudes from published works of very different linear polymer samples—including solutions and melts of neutral polymers and polyelectrolytes. The figure is not meant for a quantitative comparison (citations are included for further perusal) but rather to show that systems with different …
WebMar 7, 2024 · Abstract: F15.00004: Dynamics of Associative Polymers with High Density of Reversible Bonds* 9:00 AM–9:12 AM Abstract . Presenter: Myoeum Kim (University of … how many weeks since 5th may 2022Webpolymer dynamics, if any, can be experimentally revealed. Thus, our polymers provide an ideal model system to explore the effects of pure pairwise bonding on the behavior of associative how many weeks since 3/28/2022WebFeb 20, 2016 · For associative polymers, molecular dynamics simulations by Khalatur et al. [42] revealed that the most chains adopt the form of a closed-loop or a stretched-conformation, but under the shear forces, the fraction of loop-like chains decreases while the fraction of bridged-chains between aggregates increases. how many weeks since 5/16/22WebNov 1, 2024 · In this paper, we describe how such a dual-junction-functionality associative network can be successfully designed through a metal-coordinate polymer network … how many weeks since 6/13/22http://web.mit.edu/nnf/publications/GHM88.pdf how many weeks since 6/1/2022Webdynamics of these telechelic chains depends on numerous parameters such as polymer concentration, molecular weight, hydrophobe size and characteristics, degree of … how many weeks since 6/21/22WebSep 30, 2024 · We adopt Langevin dynamics to explore the stress-structure relationship of telechelic reversible associating polymer gel during startup shear flow, with shear strengths varying from Wi = 12.6 to Wi = 12640. At weak shear flow Wi = 12.6, the shear stress proportionally increases with shear strain at short times, followed by a strain hardening … how many weeks since 6/1/22