Synthesis of Micrometer-sized Poly(vinyl acetate) Particles through Microsuspension Iodine Transfer Polymerization: Effect of Iodine Species in a Water Medium

2021 ◽  
Author(s):  
Chujuan Huang ◽  
Toyoko Suzuki ◽  
Hideto Minami
Keyword(s):  
Vinyl Acetate ◽  
Aqueous Phase ◽  
Polymerization Rate ◽  
Water Medium ◽  
Iodine Species ◽  
Iodine Transfer ◽  
First Time

Microsuspension iodine transfer polymerization (ms ITP) of vinyl acetate (VAc) was demonstrated for the first time with the evidence of simulation of the polymerization rate in the aqueous phase (Rpw)....

Direct synthesis of jet fuel range dicycloalkane by the aqueous phase hydrodeoxygenation of polycarbonate

2021 ◽  
Author(s):  
Lulin Wang ◽  
Guangyi Li ◽  
Cong Yu ◽  
Ai-Qin Wang ◽  
Xiaodong Wang ◽  
...  
Keyword(s):  
Aqueous Phase ◽  
Direct Synthesis ◽  
Jet Fuel ◽  
Catalyst Systems ◽  
First Time

For the first time, propane-2,2-diyldicyclohexane, a jet fuel range C15 dicycloalkane was directly produced by the aqueous-phase hydrodeoxygenation (APHDO) of polycarbonate (PC). Among the investigated catalyst systems, a mixture of...

scholarly journals Iodine‐Transfer Polymerization (ITP) of Ethylene and Copolymerization with Vinyl Acetate

2020 ◽  
Vol 132 (43) ◽  
pp. 19466-19472
Author(s):  
A. Wolpers ◽  
F. Baffie ◽  
L. Verrieux ◽  
L. Perrin ◽  
V. Monteil ◽  
...  
Keyword(s):  
Vinyl Acetate ◽  
Iodine Transfer

scholarly journals Exploration of the treatment of fish-canning industry effluents by aqueous-phase reforming using Pt/C catalysts

2018 ◽  
Vol 4 (12) ◽  
pp. 1979-1987 ◽  
Author(s):  
A. S. Oliveira ◽  
J. A. Baeza ◽  
L. Calvo ◽  
N. Alonso-Morales ◽  
F. Heras ◽  
...  
Keyword(s):  
Aqueous Phase ◽  
Exploratory Study ◽  
Current Work ◽  
Aqueous Phase Reforming ◽  
First Time ◽  
Canning Industry

In the current work, an exploratory study on the application of catalytic aqueous phase reforming (APR) to the treatment of fish-canning wastewater was performed for the first time.

scholarly journals New co-polymer zwitterionic matrices for sustained release of verapamil hydrochloride

2007 ◽  
Vol 57 (4) ◽  
pp. 429-439
Author(s):  
Bistra Kostova ◽  
Dimitar Rachev
Keyword(s):  
Drug Delivery ◽  
Ionic Strength ◽  
Sustained Release ◽  
Vinyl Acetate ◽  
Swelling Kinetics ◽  
Verapamil Hydrochloride ◽  
Emulsion Copolymerization ◽  
Sustained Drug Delivery ◽  
First Time ◽  
Unit Fraction

New co-polymer zwitterionic matrices for sustained release of verapamil hydrochlorideStable co-polymer [vinyl acetate-co-3-dimethyl(methacryloyloxyethyl) ammonium propane sulfonate, p(VA-co-DMAPS)] latex of different compositions has been synthesized for the first time by emulsifier-free emulsion copolymerization. The unusual >>overshooting<< behavior of the co-polymer tablets has been explained by the formation of specific clusters from the opposite oriented dipoles-zwitterionic species. The change of their concentration with the DMAPS unit fraction (mDMAPS), pH and ionic strength has been considered responsible for the differences observed in the swelling kinetics. The results obtained prove that mDMAPSand ionic strength could be used to control the swelling degree of the p(VA-co-DMAPS) matrices and their sustained drug delivery. In this way, p(VA-co-DMAPS) matrices could be effectively used to control the sustained release of drugs with basic properties like verapamil hydrochloride from model tablets.

One-Pot Syntheses of Diaryliodonium Salts from Aryl Iodides Using Peracetic Acid as Green Oxidant

2011 ◽  
Vol 64 (5) ◽  
pp. 529 ◽  
Author(s):  
Toshifumi Dohi ◽  
Nobutaka Yamaoka ◽  
Itsuki Itani ◽  
Yasuyuki Kita
Keyword(s):  
Peracetic Acid ◽  
Hypervalent Iodine ◽  
One Pot ◽  
Iodine Species ◽  
One Pot Synthesis ◽  
Diaryliodonium Salts ◽  
Aryl Iodides ◽  
First Time

The rate-accelerating effects of fluoroalcohol solvents for generating trivalent hypervalent iodine species and the conversion into diaryliodonium(iii) salts have been used for the first time to realize a facile and clean one-pot synthesis of diaryliodonium(iii) salts 3 from aryl iodides 1 and suitable arene partners 2 with peracetic acid (PAA). The use of PAA as a green and practical oxidant is significantly effective in fluoroalcohol solvents. The scope and limitations of the methodology are elucidated by investigation of a wide variety of representative substrates.

Synthesis of poly(vinyl acetate)-b-poly(dimethylsiloxane)-b-poly(vinyl acetate) triblock copolymers by iodine transfer polymerization

2008 ◽  
Vol 44 (2) ◽  
pp. 318-328 ◽  
Author(s):  
Jeff Tonnar ◽  
Emmanuel Pouget ◽  
Patrick Lacroix-Desmazes ◽  
Bernard Boutevin
Keyword(s):  
Vinyl Acetate ◽  
Triblock Copolymers ◽  
Iodine Transfer

Molybdenum carbide nanoparticles within carbon nanotubes as superior catalysts for γ-valerolactone production via levulinic acid hydrogenation

2014 ◽  
Vol 16 (9) ◽  
pp. 4092-4097 ◽  
Author(s):  
Estevão F. Mai ◽  
Marta A. Machado ◽  
Thomas E. Davies ◽  
Jose A. Lopez-Sanchez ◽  
Victor Teixeira da Silva
Keyword(s):  
Carbon Nanotubes ◽  
Aqueous Phase ◽  
Levulinic Acid ◽  
Molybdenum Carbide ◽  
Efficient Catalyst ◽  
Supported Molybdenum Carbide ◽  
First Time

We report here for the first time that supported molybdenum carbide is an efficient catalyst to selectively convert levulinic acid into γ-valerolactone in the aqueous phase.

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