Results 111 to 120 of about 3,213,637 (284)

Isotope Effects and the Mechanism of Atom Transfer Radical Polymerization

, 2016
The mechanism of free-radical polymerization and atom transfer radical polymerization (ATRP) of methyl methacrylate was studied by a combination of 13C kinetic isotope effects and theoretical calculations.
Daniel T. Nowlan (2684299), Krzysztof Matyjaszewski (1247034), Daniel A. Singleton (1311234), Nazeem Jahed (2665945)   +3 more
core   +1 more source

Electrode and Microstructure Dependence of Oxygen Diffusion in Ferroelectric Hafnium Zirconium Oxide Thin Films

Advanced Functional Materials, EarlyView.
Significant nanoscale oxygen diffusion coefficient variations are measured in ferroelectric hafnium zirconium oxide films with grain boundaries and electrode interfaces exhibiting values 104 times larger than the grain cores. Overall coefficients are 10X larger for films prepared with metal nitride electrodes compared to refractory metals. New insights
Liron Shvilberg, Thomas W. Pfeifer, Chuanzhen Zhou, Yong Kyu Choi, Duk‐Hyun Choe, Patrick E. Hopkins, Jon F. Ihlefeld   +6 more
wiley   +1 more source

Group Transfer Radical Polymerization for the Preparation of Carbon-Chain Poly(α-olefins) [PDF]

Radical polymerization is a powerful technique for producing a variety of polymeric materials. However, the chain transfer reaction impedes the formation of polymers from many common α-olefins such as propene and 1-butene using this method. Consequently,
Yasu, Chen, Xianjin, Wang, Silin, Song, Chen, Zhu   +3 more
core   +1 more source

Advances in Sustainable and Wearable Textile Based Soft Robotics

Advanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas, Marzia Dulal, Sophia K. Novoselov, Victoria K. Novoselov, Kostya S. Novoselov, Shaila Afroj, Nazmul Karim   +6 more
wiley   +1 more source

High Power Sunlight‐Simulated UV‐Induced Radical Polymerization: Self‐Initiation and Self‐Crosslinking

Macromolecular Materials and Engineering
Under high power UV irradiation, radicals can be generated from double bonds through photodissociation, H‐abstraction, or oxygen initiation mechanisms. This eliminates the need for externally added initiators in photopolymerization.
Wenqing Yan, Jimena de la Vega, Özen Eroğlu, Lavinia Heisenberg, Deyi Wang   +4 more
doaj   +1 more source

Electrochemical triggering and control of atom transfer radical polymerization

, 2018
Electrochemically mediated atom transfer radical polymerization ( e ATRP) is an advanced method to produce well-defined polymers. In e ATRP, an electric current is used to trigger the polymerization, (re)generate the active catalyst, and strictly control
Francesca Lorandi, Lorandi, Francesca, Gennaro, Armando, Isse, Abdirisak Ahmed, Marco Fantin, Fantin, Marco, Abdirisak Ahmed Isse, Armando Gennaro   +7 more
core   +1 more source

Structure‐Guided Dynamical Mechanics in Bioinspired Double Twisted Laminated Thin Films

Advanced Functional Materials, EarlyView.
This work explores a dynamic mechanistic study of crack propagation and puncture testing via real‐time monitoring of crack initiation, propagation, and termination through nature‐inspired single and double twisted architectures fabricated from cellulose nanocrystals.
Justin Brackenridge, Olivia Harper, Jaejun Lee, Sergio Gonzalez‐Munoz, Vladimir V. Tsukruk   +4 more
wiley   +1 more source

Atom transfer radical polymerization as a tool for surface functionalization

, 2002
Atom transfer radical polymerization (ATRP) is receiving increasing attention as a method for surface functionalization. A simple way-based on the hydrophilicity of the substrate-to discriminate between surface and bulk polymerization in materials having
Hubbell, J. A., HUBBELL J. A., TIRELLI N., FELDMAN K., CRESCENZI, Vittorio, Tirelli, N., MASCI, Giancarlo, BONTEMPO D., Bontempo, D., Feldman, K., Masci, G., Crescenzi, V.   +11 more
core   +1 more source

Optical Signature of Moiré Superlattices Formed by Twisted SrTiO3 Membranes

Advanced Functional Materials, EarlyView.
We discover optical signatures from bonded interfaces in twisted SrTiO3 moiré superlattices, including low‐frequency Raman vibrational modes and strong second‐harmonic generation, consistent with strong interlayer coupling inferred from cross‐sectional electron microscopy and ab initio calculations. ABSTRACT Moiré superlattices formed at the interfaces
T. A. M. Ragib Shahriar, Fumikazu Murakami, Xing He, Konnor Koons, Xinyan Li, Bumseop Kim, Shihan Qin, Varun Harbola, Jochen Mannhart, Yimo Han, Ruijuan Xu, Shengxi Huang, Andrew M. Rappe, Hanyu Zhu   +13 more
wiley   +1 more source

Electrospun Wood‐Derived Biopolymers as Electrodes in Electrochemical Energy Storage Technologies

Advanced Functional Materials, EarlyView.
Electrospinning transforms wood‐derived cellulose and lignin into architecturally defined, binder‐free carbon electrodes with tuneable porosity and functionality. This review shows how fibre design enables decoupled charge and mass transport, enhancing performance across battery systems, while identifying key challenges in spinnability, scalability ...
Michael W. Thielke, Hattie R. Chisnall, Jesus Vazquez Chavez, Ana B. Jorge Sobrido   +3 more
wiley   +1 more source