Macrocyclic polymers: Synthesis, purification, properties and applications

J Ochs, CA Pagnacco, F Barroso-Bujans - Progress in Polymer Science, 2022 - Elsevier
Cyclic polymers present a topology that differ significantly from their linear counterparts due
to their circular structure and therefore, the lack of chain ends. These simple characteristics …

Celebrating Soft Matter's 10th Anniversary: Topology matters: structure and dynamics of ring polymers

D Richter, S Gooßen, A Wischnewski - Soft Matter, 2015 - pubs.rsc.org
Considering topology among all polymer architectures polymer rings are unique, as they are
the simplest closed structures without ends. In this review we present recent experimental …

Topology Matters: Conformation and Microscopic Dynamics of Ring Polymers

M Kruteva, J Allgaier, D Richter - Macromolecules, 2023 - ACS Publications
Ring polymers have fascinated theorists, simulators, and experimentalists as they are the
simplest polymer without ends, giving rise to important topology related properties. We …

Melt rheology of ring polystyrenes with ultrahigh purity

Y Doi, K Matsubara, Y Ohta, T Nakano… - …, 2015 - ACS Publications
The melt rheology of highly-purified ring polystyrenes in a wide range of molecular weights
(10K≤ M w≤ 240K g/mol) was investigated. All the rings revealed no obvious rubbery …

Viscosity of ring polymer melts

R Pasquino, TC Vasilakopoulos, YC Jeong… - ACS macro …, 2013 - ACS Publications
We have measured the linear rheology of critically purified ring polyisoprenes, polystyrenes,
and polyethyleneoxides of different molar masses. The ratio of the zero-shear viscosities of …

Local polar and long-range isotropic activity assisted swelling and collapse dynamics of an active ring polymer

S Kumar, S Thakur - Macromolecules, 2023 - ACS Publications
The circular and ring structures in many synthetic or natural systems simultaneously
experience local and long-range forces. In this work, we use numerical simulations to …

Unified understanding of the impact of semiflexibility, concentration, and molecular weight on macromolecular-scale ring diffusion

B Mei, GS Grest, S Liu, TC O'Connor… - Proceedings of the …, 2024 - pnas.org
Conformationally fluctuating, globally compact macromolecules such as polymeric rings,
single-chain nanoparticles, microgels, and many-arm stars display complex dynamic …

Threading of unconcatenated ring polymers at high concentrations: double-folded vs time-equilibrated structures

J Smrek, K Kremer, A Rosa - ACS macro letters, 2019 - ACS Publications
Unconcatenated ring polymers in concentrated solutions and melt are remarkably well
described as double-folded conformations on randomly branched primitive trees. This …

Dynamical entanglement and cooperative dynamics in entangled solutions of ring and linear polymers

D Michieletto, T Sakaue - ACS Macro Letters, 2020 - ACS Publications
Understanding how entanglements affect the behavior of polymeric complex fluids is an
open challenge in many fields. To elucidate the nature and consequence of entanglements …

Influence of chain topology on polymer crystallization: poly (ethylene oxide)(PEO) rings vs. linear chains

G Zardalidis, J Mars, J Allgaier, M Mezger, D Richter… - Soft Matter, 2016 - pubs.rsc.org
The absence of entanglements, the more compact structure and the faster diffusion in melts
of cyclic poly (ethylene oxide)(PEO) chains have consequences on their crystallization …