Stable ultrahighly branched polyethylene synthesis via externally robust chain-walking polymerization

H Fan, X Kang, S Dai - ACS Catalysis, 2024 - ACS Publications
Recently, late-transition-metal-catalyzed chain-walking polymerization has emerged as a
promising method for synthesizing a range of polyethylenes, including linear, branched, and …

[HTML][HTML] Modeling of nonlinear optical phenomena in host-guest systems using bond fluctuation Monte Carlo model: a review

AC Mitus, M Saphiannikova, W Radosz… - Materials, 2021 - mdpi.com
We review the results of Monte Carlo studies of chosen nonlinear optical effects in host-
guest systems, using methods based on the bond-fluctuation model (BFM) for a polymer …

Advances in High-Temperature Interaction Chromatography of Polyolefins: A Tutorial on Solvent and Temperature Gradient

PZ Ndlovu, A Lederer - Analytical Chemistry, 2024 - ACS Publications
The advancement of high-temperature interaction chromatography (HT-IC) is a key
milestone in polyolefin characterization. Temperature gradient interaction chromatography …

Selective branch formation in ethylene polymerization to access precise ethylene-propylene copolymers

Y Zhang, X Kang, Z Jian - Nature Communications, 2022 - nature.com
Polyolefins with branches produced by ethylene alone via chain walking are highly desired
in industry. Selective branch formation from uncontrolled chain walking is a long-standing …

Facile access to ultra-highly branched polyethylenes using hybrid “sandwich” Ni (II) and Pd (II) catalysts

W Lu, Y Liao, S Dai - Journal of Catalysis, 2022 - Elsevier
The branching type and amount in polyolefins have a significant impact on the material
properties. In this study, a family of “sandwich” or “semi-sandwich” α-diimine ligands with …

Structure–property relationships in polyesters from UV-initiated radical ring-opening polymerization of 2-methylene-1, 3-dioxepane (MDO)

F Mehner, M Geisler, K Arnhold… - ACS Applied Polymer …, 2022 - ACS Publications
Radical ring-opening polymerization (RROP) of 2-methylene-1, 3-dioxepane (MDO) leads to
a polymer that is structurally similar to poly (ε-caprolactone)(PCL). Despite the similarities …

An in-depth analysis approach enabling precision single chain nanoparticle design

J Engelke, BT Tuten, R Schweins, H Komber… - Polymer …, 2020 - pubs.rsc.org
The synthesis of single chain nanoparticles (SCNPs) is a vibrant field in macromolecular
science, enabled by a rich variety of synthetic strategies to induce macromolecular chain …

Nonlinear Ziegler–Natta-Homopolyethylene with Enhanced Crystallinity: Physical and Macromolecular Characteristics

PZ Ndlovu, A Ndiripo, A Albrecht, H Pasch… - …, 2024 - ACS Publications
Polyolefin engineering and design are at the forefront of a significant number of research
and development laboratories, hel** to bring about new and highly specific materials for …

Branching regulation in olefin polymerization via lewis acid triggered isomerization of monomers

HE Basbug Alhan, GR Jones, E Harth - Angewandte Chemie, 2020 - Wiley Online Library
We present a new strategy to regulate branching in chain‐walking olefin polymerization by
triggering a rapid isomerization of 1‐alkene monomers into internal olefins by adding a …

Unraveling multiple distributions in chain walking polyethylene using advanced liquid chromatography

L Plüschke, A Ndiripo, R Mundil, J Merna… - …, 2020 - ACS Publications
Chain-walking (CW) catalysis applied to α-olefin polymerization gives rise to structurally
unparalleled macromolecules with diverse topological and rheological properties. The …