27 papers · ranked by Valyu relevance
Annika Krusenbaum, Sven Grätz, Getinet Tamiru Tigineh, Lars Borchardt + 1 more
'Lars Borchardt' 'Jeung Gon Kim'] Mechanochemistry - the utilization of mechanical forces to induce chemical reactions - is a rarely considered tool for polymer synthesis. It offers numerous advantages such as reduced solvent consumption, accessibility of novel structures, and the avoidance of problems posed by low…
Maartje Otten, Inèz Klein Gebbink, Patrick J. Schara, Željko Tomović + 3 more
Modification of Polyethylene through Photochemical Oximation and Consecutive Ketonization Authors: ['Maartje Otten' 'Inèz Klein Gebbink' 'Patrick J. Schara' 'Željko Tomović' 'Martin Lutz' 'Pieter C.A. Bruijnincx' 'Arnaud Thevenon'] Post-polymerization modification of polyolefins provides access to functional polymers…
Tulaja Shrestha, Dan My Nguyen, Harrison Goehrig, Vidhika S. Damani + 2 more
Post-polymerization modification allows for the incorporation of functional groups that would otherwise be incompatible with polymerization conditions, enhancing synthetic efficiency and facilitating the creation of complex polymer architectures for specialized applications, such as biomedical devices, electronics, and…
Zixiao Wang, Feichen Cui, Yang Sui, Jiajun Yan + 1 more
Radical chemistry is one of the most important methods used in modern polymer science and industry. Over the past century, new knowledge on radical chemistry has both promoted and been generated from the emergence of polymer synthesis and modification techniques. In this review, we discuss radical chemistry in polymer…
Authors not listed
Post-polymerization modification allows for the incorporation of functional groups that would otherwise be incompatible with polymerization conditions, enhancing synthetic efficiency and facilitating the creation of complex polymer architectures for specialized applications, such as biomedical devices, electronics, and…
Emanuela Gaviolli, Fabricio Mezzomo Collares, Gabriela de Souza Balbinot, Vicente Castelo Branco Leitune
The study aimed to evaluate the effect of different TPO photoinitiator concentrations on the mechanical, physicochemical, and biological properties of 3D-printed resins for provisional dental restorations. The resin was formulated with 60 wt.% UDMA, 40 wt.% TEGDMA, 1 wt.% TPO, 0.01 wt.% BHT, and 5 wt.% BaSil. TPO was…
Camila Guindani, Graziâni Candiotto, Pedro Henrique Hermes de Araújo, Sandra Regina Salvador Ferreira + 3 more
'Sandra Regina Salvador Ferreira' 'Débora de Olíveira' 'Frederik R. Wurm' 'Katharina Landfester'] Controlling the degradation rates of polymers is crucial for their application in tissue engineering or to achieve degradation of the polymers in the wastewater purification. As hydrophobic polyesters often exhibit very…
Yanjun Chen, Haiqian Dong, Gianpiero Cera
Polyolefins are used widely due to their benefits such as being lightweight, chemical inertness, low cost, tunable properties, and easy processability. However, their nonpolar nature significantly limits their high-end applications. The non-bridged half-titanocenes exhibit remarkable catalytic activities with good…
Solomiia Borova, Christine Schlutt, Joachim Nickel, Robert Luxenhofer
Here we introduce a post-polymerization modification method of an α-terminal functionalized poly-(N-methyl-glycine), also known as polysarcosine. We utilized 4-(methylthio)phenyl piperidine-4-carboxylate as an initiator for the ring-opening polymerization of N-methyl-glycine-N-carboxyanhydride followed by oxidation of…
Egon Prioglio, Chiara Scrocciolani, Bianca Maria Colosimo
Two-photon polymerization (2PP) enables fabrication of hydrogel constructs with submicron, cell-scale resolution, but hydrogel-based bioinks are markedly more sensitive to process variability than conventional photoresists, and this sensitivity is further amplified when living cells are embedded in the resin.…
Swagatam Barman, Alimi Abiodun, Md Waliullah Hossain, Adam Parris + 5 more
The rise of antibiotic resistance, biofilm formation, and dormant bacterial populations poses serious global health threats. Synthetic antimicrobial peptide (AMP) mimics offer promising alternatives, though the impact of secondary structures in polymeric AMP mimics on antimicrobial efficacy is underexplored. This study…
Gediminas Seniutinas, A Weber, Celestino Padeste, Ioanna Sakellari + 2 more
'Maria Farsari' 'Christian Dávid'] Laser polymerization has emerged as a direct writing technique allowing the fabrication of complex 3D structures with microscale resolution. The technique provides rapid prototyping capabilities for a broad range of applications, but to meet the growing interest in 3D nanoscale…
Authors not listed
In this proof-of-concept, preliminary theoretical results are further developed validating the feasibility of polymeric reactors in thermo-catalysis at temperatures up to 220 °C for propellant production on Mars. The experimental study is conducted with a Ruthenium based low-temperature Methanation catalyst supported…
Authors not listed
A bifunctional benzophenone chromophore, bis-BP, can photo-crosslink thin films of alkyne-terminated poly (styrene) polymer upon exposure to UV light. The crosslinked film is table towards water and DMSO, remaining physisorbed to a glass substrate after rinsing. The alkyne groups of the photo-crosslinked film can be…
Yifei Liang, Holly L. Sullivan, Kendal Carrow, Joanna Korpanty + 4 more
Nanoparticles that undergo a localized morphology change to target areas of inflammation have been previously developed but are limited by their lack of biodegradability. In this paper, we describe a low ring strain cyclic olefin monomer, 1,3-dimethyl-2-phenoxy-1,3,4,7-tetrahydro-1,3,2-diazaphosphepine 2-oxide…
Andrea Camposeo, Aristein Arkadii, Luigi Romano, Francesca D’Elia + 3 more
'Filippo Fabbri' 'Eyal Zussman' 'Dario Pisignano'] Photopolymerization processes are exploited in light exposure-based 3D printing technologies, where either a focused laser beam or a patterned light sheet allowslayers of a UV curable, liquid pre-polymer to be solidified. Here we focus on the crucial, though often…
Xuanhe Li, Tal Cohen
Polymerization is a fundamental chemical process that enables large-scale production of material components that are essential in nearly all modern industries. In transforming a monomer mixture into a cross-linked structure of polymer chains, polymerization introduces changes in temperature and in material properties…
Authors not listed
Organic polysulfide polymers are highly useful materials with emerging high-value applications as cathode components for Li-S batteries, optics for infrared imaging, sorbents for heavy metal remediation, and novel anti-microbial agents. Despite the increasing use of these sulfur-rich polymers, there are limited methods…
Chengze Huo, Jun Wang, Xiakun Chu
Polyethylene terephthalate (PET) hydrolysis by Ideonella sakaiensis PETase (IsPETase) begins at a heterogeneous solid–liquid interface, yet the molecular basis of productive surface recognition remains poorly resolved. Here, we combined a Martini 3 coarse-grained PET model with GōMartini protein dynamics to investigate…
Artem Petrov, Vladimir Yu. Rudyak, Pavel Kos, Alexander V. Chertovich
'Alexander V. Chertovich'] In this work we developed a theoretical model to describe the polymerization of very long macromolecules with simultaneous precipitation. As a reference system for our model we consider UHMWPE polymerization process, via homogeneous catalysis and with molecular weight above 106 monomers. We…
Sandra Kaabel, Jane Arciszewski, Tristan H. Borchers, J.P. Daniel Therien + 2 more
Waste polyester textiles trap copious amounts of useful polymers, which are not recycled due to separation challenges and partial structural degradation during use and thermo-mechanical recycling. Chemical recycling of polyethylene terephthalate (PET) through depolymerization can provide a feedstock of recycled…
Bastien Luzel, Noémie Gil, Patrick Désirée, Julien Monot + 6 more
The environmental impact of plastic waste has been a real problem for the past decades. The incorporation of cleavable bonds in the polymer backbone is a solution to make a commodity polymer degradable. When radical polymerization is used, this approach is made possible by the radical ring-opening polymerization (rROP)…
Abesach M. Motlatle, Suprakas Sinha Ray, Vincent Ojijo, Manfred R. Scriba + 1 more
'Manfred R. Scriba' 'Donatella Duraccio'] The article is the first review encompassing the study and the applications of polyester-based coatings for the corrosion protection of steel. The impact of corrosion and the challenges encountered thus far and the solutions encountered in industry are addressed. Then, the use…
Jasmine Pople, Thomas Nicholls, Le Nhan Pham, Witold Bloch + 6 more
With increasing interest in high sulfur content polymers, there is a need to develop new methods for their synthesis that feature better safety and control of structure. In this report, electrochemically-initiated ring-opening polymerization of norbornene-based cyclic trisulfide monomers delivered well-defined, linear…
Liangyu Qian, Isaiah T. Dishner, Dana L. Carper, Vilmos Kertesz + 6 more
Nylons, a major class of synthetic polyamides, are widely used due to their excellent mechanical strength, thermal stability, and chemical resistance. Conventional nylon production relies on the polymerization of lactams or stoichiometric nylon salts. However, applying these approaches to unconventional precursors such…
Mike Edwards
By means of the density functional theory framework I tackle the long-standing problem of a polymer star interpenetrating with a polymer brush at thermal equilibrium. Remarkably, the star is repelled to the outside of the brush once it sucks into the brush. It turns out that there could be a highly fluctuating region…
Authors not listed
Polycatenanes, a novel class of polymers consisting of interlocked macrocyclic monomers, have attracted significant attention. However, the formation mechanism of polycatenanes through direct catenation remains poorly understood. Herein we explore the structural diversity and unique chain termination mechanism inherent…