Results 71 to 80 of about 58,142 (306)

Kinetic and Thermodynamic Studies of Carbenium Ion Additions Towards Alkenes [PDF]

open access: yes, 1988
The ionisation (Ar2CHCl + BC13 v=± Ar2CH+BCi;) and dissociation (Ar2CH+BCi; ^=*Ar2CH+ + BCl^) equilibria of diarylmethyl chlorides i n boron trichloride/ dichloromethane solution have been studied by conductimetry, photometry and *H NMR spectroscopy ...
Arnett   +20 more
core   +1 more source

Ammonium Salts as Curing Agents to Obtain Ionic Epoxy Resins With a Thermoplastic‐to‐Thermoset Transition

open access: yesAdvanced Materials, EarlyView.
Ionic epoxy networks are prepared using ammonium salts as hardeners, leading to a two‐stage curing process with a thermoplastic‐like intermediate. This uncommon behavior enables extrusion and fabrication of thermoplastic prepregs that can be cured into thermoset composites.
Izabela Kurowska   +10 more
wiley   +1 more source

Suppression of zinc dendrites in zinc electrode power cells [PDF]

open access: yes, 1970
Addition of various tetraalkyl quarternary ammonium salts, to alkaline zincate electrolyte of cell, prevents formation of zinc dendrites during charging of zinc electrode.
Damjanovic, A., Diggle, J. W.
core   +1 more source

Eutectozymes as Soft Hybrid Materials for Advanced Biocatalysis

open access: yesAdvanced Materials, EarlyView.
Eutectozymes are sustainable hybrid materials that embed a GOx–HRP cascade within hydrophobic eutectogels featuring a dual supramolecular–covalent network. This architecture preserves native enzyme structure and stability, enables efficient heterogeneous biocatalysis in aqueous media, and positions eutectogels as robust platforms for next‐generation ...
Manuel Eduardo Martinez Cartagena   +10 more
wiley   +1 more source

A Biochar‐Based Composite Hydrogel Microenvironment for Enhanced Biocatalysis

open access: yesAdvanced Materials, EarlyView.
This work presents the synthesis of a polyacrylamide hydrogel wherein biomass‐derived biochar is co‐encapsulated with the enzyme horseradish peroxidase (HRP). The resulting composite hydrogel possesses balanced electron‐rich and electron‐deficient domains, creating an optimal microenvironment that concentrates both hydrogen peroxide and phenol ...
Shengzhe Wang   +9 more
wiley   +1 more source

Design of modified plastic surfaces for antimicrobial applications: Impact of ionizing radiation on the physical and mechanical properties of polypropylene [PDF]

open access: yes, 2013
Surface modification of polypropylene (PP) sheets was carried out by radiation induced graft polymer- ization of hydrophilic functional molecules such as N,N-dimethylacrylamide (DMA) and [2-methacry- loyloxy)ethyl] trimethylammonium chloride, which is a ...
DELATTRE, Jennifer   +3 more
core   +6 more sources

Positively Charged Polymer‐Brush MOFs for Large‐Area, Pressure‐Resistant Gas Separation Membranes

open access: yesAdvanced Materials, EarlyView.
A universal POPA strategy enables positively charged polymer‐brush MOFs with self‐adaptive interfacial interlocking to resist aggregation under fast processing. This design ensures seamless dispersion within large‐area selective layers, achieving 1 m‐wide roll‐to‐roll fabrication of pressure‐resistant MMCMs with tunable CO2 separation performance ...
Yi Yang   +11 more
wiley   +1 more source

Preparation of chitin-amphipathic anion/quaternary ammonium salt ecofriendly dressing and its effect on wound healing in mice

open access: yesInternational Journal of Nanomedicine, 2018
Daijun Zhou,1–3 Ruijia Yang,4 Tao Yang,1–3 Malcolm Xing,1–4 Gaoxing Luo1–3 1Institute of Burn Research, 2State Key Laboratory of Trauma, Burn and Combined Injury, 3Key Laboratory of Proteomics of Chongqing, Southwest Hospital ...
Zhou D, Yang R, Yang T, Xing M, Luo G
doaj  

Ordered lamellar supermicroporous titania templating by rosin-derived quaternary ammonium salt. [PDF]

open access: yesPLoS ONE, 2017
By using dehydroabietyltrimethyl ammonium bromine (DTAB), a novel rosin-derived quaternary ammonium salt, as template and peroxotitanium acid as precursor, ordered lamellar supermicroporous titania has been synthesized via a hydrothermal process.
Fei Song   +4 more
doaj   +1 more source

An integrated native mass spectrometry and top-down proteomics method that connects sequence to structure and function of macromolecular complexes. [PDF]

open access: yes, 2018
Mass spectrometry (MS) has become a crucial technique for the analysis of protein complexes. Native MS has traditionally examined protein subunit arrangements, while proteomics MS has focused on sequence identification.
Campuzano, Iain DG   +4 more
core   +1 more source

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