Andrey V. Dobrynin and Michael Jacobs Entanglements in polyelectrolyte solutions are a controversial issue in polymer science. Experimental studies during the last 20 years have raised doubts about the applicability of the concept of entanglements developed for neutral polymers to … Read more
Andrew N. Keith, Charles Clair, Abdelaziz Lallam, Egor A. Bersenev, Dimitri A. Ivanov, Yuan Tian, Andrey V. Dobrynin, and Sergei S. Sheiko Softness and firmness are opposing traits that synergistically define the elastic response of biological systems. Currently, no single … Read more
Ryan Sayko, Zilu Wang, Heyi Liang, Matthew L. Becker, and Andrey V. Dobrynin We performed coarse-grained molecular dynamics simulations of swelling and degradation of copolymer films confined within polymer networks with different values of shear modulus. The microphase separated copolymer … Read more
Andrey V. Dobrynin Polyelectrolytes are macromolecules with ionizable groups. In this perspective, I will present a brief history of polyelectrolytes starting from the seminal papers published in the first half of the 20th century followed by the current developments in … Read more
Ekaterina B. Zhulina, Sergei S. Sheiko, Andrey V. Dobrynin, and Oleg V. Borisov We present an analytical theory of microphase separation in the melt of bottlebrush and comblike block copolymers in the strong segregation limit. The constructed phase diagram predicts … Read more
Vahid Karimkhani, Mohammad Vatankhah-Varnosfaderani, Andrew N. Keith, Erfan Dashtimoghadam, Benjamin J. Morgan, Michael Jacobs, Andrey V. Dobrynin, and Sergei S. Sheiko One of the notorious problems in dielectric elastomer actuators (DEAs) is electromechanical instability resulting in uncontrolled breakdown, which precludes … Read more
Ryan Sayko, Zilu Wang, Heyi Liang, Matthew L. Becker, and Andrey V. Dobrynin Coarse-grained molecular dynamics simulations are used to study the degradation of films of copolymers in a selective solvent for one of the blocks. Simulations were designed to … Read more
Yuan Tian, Heyi Liang, and Andrey V. Dobrynin The motion of nanoparticles on soft surfaces is the result of interplay between capillary, elastic and friction forces. To elucidate the importance of the different contributions controlling nanoparticle rolling dynamics on soft … Read more
Andrew N. Keith, Mohammad Vatankhah-Varnosfaderani, Charles Clair, Farahnaz Fahimipour, Erfan Dashtimoghadam, Abdelaziz Lallam, Michael Sztucki, Dimitri A. Ivanov, Heyi Liang, Andrey V. Dobrynin, and Sergei S. Sheiko Softness and firmness are seemingly incompatible traits that synergize to create the unique … Read more
Heyi Liang, Zilu Wang, and Andrey V. Dobrynin We study the strain-adaptive behavior of the self-assembled networks of linear-bottlebrush-linear (LBL) triblock copolymers using a combination of analytical calculations and molecular dynamics simulations. Interactions between immiscible blocks result in microphase separation … Read more
