Results 101 to 110 of about 31,941 (245)

Hydrogen Atom Transfer Induces Photodegradation in Carbonyl‐Based Multi‐Resonance TADF Emitters

Angewandte Chemie, Volume 138, Issue 19, 4 May 2026.
Boosting triplet harvesting in N/C═O MR‐TADF emitters unexpectedly induces rapid photodegradation under oxygen‐free conditions. Spectroscopic studies reveal that triplet excited states trigger hydrogen‐atom transfer from solvent to the carbonyl unit, driven by triplet energetics and hydrogen electrophilicity.
Changfeng Si, Elvie F. P. Beaumont, Jenn Zi Yu Tan, Mitchell J. Demchuk, Zachary M. Hudson   +4 more
wiley   +2 more sources

Friction and Wear Performance of a Hydraulic Motor Roller/Piston Pair Contact Lined with the Self-Lubricating Bearing Bush Modified by PEEK

Applied Sciences
Poly Ether Ether Ketone (PEEK) is a kind of special engineering plastic with excellent properties such as high-temperature resistance, self-lubrication, wear resistance, and high mechanical strength.
Ying Li, Xuanxuan Han, Xueshi Cui, Ziyang Wang, Jin Zhang   +4 more
doaj   +1 more source

Toughening of BIS maleimide resins: Synthesis and characterization of maleimide terminated poly(arylene ether) oligomers and polymers [PDF]

Amine functional poly(arylene ether) sulfones were previously reported. Herein, the chemistry was extended to amorphous poly(arylene ether) ketones because of their higher fracture toughness values, relative to the polysulfones.
Hedrick, J. C., Jurek, M. J., Lyle, G. D., Mcgrath, J. E., Mohanty, D.   +4 more
core   +1 more source

Characteristics, properties and limitations of per‐ or polyfluoroalkyl substances (PFASs) and fluoropolymers

Polymer International, EarlyView.
An overview and categorization of man‐made per‐ or polyfluoroalkyl substances (PFASs) including low‐molar‐mass and high‐molar‐mass fluorochemicals, and their international regulations is presented. Though certain PFASs are toxic, bioaccumulative and cross the human cellular membranes, others, such as fluoropolymers, are safe, reliable and involved in ...
Bruno Améduri
wiley   +1 more source

Inflammatory response to implantation of transparent nanocrystalline yttria-stabilized zirconia using a dorsal window chamber model. [PDF]

, 2016
The long-range goal of the windows to the brain (WttB) is to improve patient care by providing a technique for delivery and/or collection of light into/from the brain, on demand, over large areas, and on a chronically-recurring basis without the need for
Aguilar, Guillermo, Cabrales, Pedro, Damestani, Yasaman, Galan-Hoffman, Diego E, Ortiz, Daniel   +4 more
core   +1 more source

Structural characterization and optimum machining parameters of jute/carbon fibre hybrid reinforced epoxy composite laminates

Polymer International, EarlyView.
Hybrid jute/carbon epoxy laminates have better mechanical performance and less drilling damage by the use of optimized stacking sequence and machining parameters. Abstract Three composite laminate systems were produced using the standard hand lay‐up method: jute‐fibre‐reinforced polymer (JFRP), carbon‐fibre‐reinforced polymer (CFRP) and a hybrid of the
Paulraj Prabhu, Anbalagan Arunkumar, Nadir Ayrilmis, Vellingiri Suresh, Ram Subbiah, Emarose Shankar   +5 more
wiley   +1 more source

Multiscale Modeling of Thermoplastic Matrix Composites for Cryogenic Hydrogen Storage Applications

Modelling
The performance of thermoplastic matrix composites for linerless Type V cryotanks is evaluated via a partially coupled, multiscale computational workflow with the objective of assessing the choice of thermoplastic matrix material under realistic ...
Brett A. Bednarcyk, Brandon L. Hearley, Evan J. Pineda   +2 more
doaj   +1 more source

Characterisation of a novel poly (ether ether ketone)/calcium sulphate composite for bone augmentation

Biomaterials Research, 2017
Background Calcium sulphate (CS) has been used in bone grafting since the 1800s. It has not replaced autograft as the gold standard, however, since its dissolution occurs rapidly in bodily fluids, meaning that the material cannot support long-term bone ...
Erik A. B. Hughes, Liam M. Grover
doaj   +1 more source

Sustainable Hybrid Natural Fiber Composites: Influence of Stacking Sequence on Impact Performance and Energy Dissipation

Journal of Polymer Science, EarlyView.
The low‐velocity impact response of jute, linen, and hemp composites is examined to assess hybridization effects. The study provides insight into the mechanisms governing impact resistance in natural fiber‐reinforced composite systems, highlighting their potential as environmentally benign materials.
Baran Erkek
wiley   +1 more source

Application and research advance of poly-ether-ether-ketone (PEEK) in removable partial dentures [PDF]

Kouqiang yixue
As a commonly used material for removable partial dentures, cobalt-chromium alloy frameworks offer excellent corrosion resistance, processability and stability. However, they also have drawbacks, including a high modulus of elasticity and poor aesthetics.
LI Danyang, DING Hao, WU Jie, XIE Hongjun
doaj   +1 more source