Results 1 to 10 of about 514,259 (292)

Eco conscious synthesis of poly(tetramethylene itaconate) emphasizing inhibitor free and solvent free sustainability [PDF]

open access: yesScientific Reports
Artificial tissues and organs can be obtained through a modern material processing method − 3D printing. In this method, 3D printing inks are used. Those are most commonly made of polyacrylates which show several undesirable characteristics.
Magdalena Miętus   +3 more
doaj   +2 more sources

Solvent-free autocatalytic supramolecular polymerization [PDF]

open access: yesNature Materials, 2021
Abstract Solvent-free chemical manufacturing is one of the awaited technologies for addressing an emergent issue of serious environmental pollution. Here, we report "solvent-free autocatalytic supramolecular polymerization (SF-ASP)", where a phthalonitrile derivative with hydrogen-bonding side chains as the monomer is autocatalytically ...
Zhen Chen   +9 more
openaire   +2 more sources

Solvent‐Free Synthesis of Peptides [PDF]

open access: yesAngewandte Chemie, 2009
A crush on sweetness ! A novel solvent-free methodology for the synthesis of peptides was developed: the coupling of an urethane protected N-carboxy anhydride (UNCA) of an aminoacid with another aminoacid derivative gave a protected dipeptide in very high yield under ball-milling conditions. The reaction is taking place in the solid state. This solvent-
Declerck, Valérie   +3 more
openaire   +3 more sources

Predicting the activity coefficients of free-solvent for concentrated globular protein solutions using independently determined physical parameters. [PDF]

open access: yesPLoS ONE, 2013
The activity coefficient is largely considered an empirical parameter that was traditionally introduced to correct the non-ideality observed in thermodynamic systems such as osmotic pressure.
Devin W McBride, Victor G J Rodgers
doaj   +1 more source

3D Printing of Solvent-Free Supramolecular Polymers

open access: yesFrontiers in Chemistry, 2021
Additive manufacturing has significantly changed polymer science and technology by engineering complex material shapes and compositions. With the advent of dynamic properties in polymeric materials as a fundamental principle to achieve, e.g., self ...
Harald Rupp, Wolfgang H. Binder
doaj   +1 more source

Enzymatic Kinetics of Solvent-free Esterification with Bio-imprinted Lipase [PDF]

open access: yesChemical and Biochemical Engineering Quarterly, 2020
To avoid the use of compounds that burden the environment, a solvent-free enzymatic reaction was the focus of this study. Investigated were the catalytic activities and kinetics of lipases that were pretreated with carboxylic acids for the solvent-free ...
M. Matsumoto, Y. Hasegawa
doaj   +1 more source

Fast microwave-assisted oxidation of 1,4-dihydropyridines with FeCl 3.SiO 2 [PDF]

open access: yes, 2005
Pyridine derivatives are easily obtained in high yields by microwave-promoted rapid oxidation of the corresponding 1,4-dihydropyridines with ferric chloride hexahydrate and silica gel under solvent-free ...
Alaee, E.   +4 more
core   +1 more source

Microwave assisted solvent free synthesis of 1,3-diphenylpropenones

open access: yesChemistry Central Journal, 2011
Background 1,3-Diphenylpropenones (chalcones) are well known for their diverse array of bioactivities. Hydroxyl group substituted chalcones are the main precursor in the synthesis of flavonoids.
Sarma Jadab C, Kakati Dwipen
doaj   +1 more source

Transdermal delivery of ibuprofen utilizing a novel solvent free pressure sensitive adhesive (PSA) : TEPI® technology [PDF]

open access: yes, 2017
Purpose The main objective of this present study was the investigation of potential novel transdermal patch technology (TEPI®) delivering ibuprofen as the active pharmaceutical ingredient (API) using a novel poly(ether-urethane)-silicone crosslinked ...
Haddleton, David M.   +3 more
core   +1 more source

A novel dimethylformamide (DMF) free bar-cast method to deposit organolead perovskite thin films with improved stability [PDF]

open access: yes, 2016
We report a solvent-free approach to synthesizing organolead perovskites by using solid state reactions to coat perovskite crystals onto Al2O3 or TiO2 nanoparticles followed by addition of terpineol affording perovskite inks.
Arthur Connell   +36 more
core   +4 more sources

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