scholarly journals One-pot synthesis of micron-sized polybetaine particles; innovative use of supercritical carbon dioxide

2017 ◽  
Vol 8 (31) ◽  
pp. 4557-4564 ◽  
Author(s):  
Simon P. Bassett ◽  
Natasha A. Birkin ◽  
James Jennings ◽  
Emma Chapman ◽  
Rachel K. O'Reilly ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
One Pot ◽  
One Pot Synthesis ◽  
Methanol Mixture ◽  
First Time ◽  
Supercritical Carbon

Well defined micron-sized polybetaine particles have been synthesised for the first time by precipitation polymerisation in a scCO2/methanol mixture.

One-Pot Synthesis of Block Copolymers in Supercritical Carbon Dioxide: A Simple Versatile Route to Nanostructured Microparticles

2012 ◽  
Vol 134 (10) ◽  
pp. 4772-4781 ◽  
Author(s):  
James Jennings ◽  
Mariana Beija ◽  
Alexandre P. Richez ◽  
Samuel D. Cooper ◽  
Paul E. Mignot ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Block Copolymers ◽  
Supercritical Carbon Dioxide ◽  
One Pot ◽  
One Pot Synthesis ◽  
Supercritical Carbon

scholarly journals Enzymatic one-pot synthesis of renewable and biodegradable surfactants in supercritical carbon dioxide (scCO2)

2020 ◽  
Vol 22 (4) ◽  
pp. 1308-1318 ◽  
Author(s):  
Mariana d'Almeida Gameiro ◽  
Amy Goddard ◽  
Vincenzo Taresco ◽  
Steven M. Howdle
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Enzymatic Catalysis ◽  
Amphiphilic Polymers ◽  
One Pot ◽  
One Pot Synthesis ◽  
Supercritical Carbon

We exploit enzymatic catalysis in supercritical carbon dioxide to create novel, linear and degradable amphiphilic polymers that can act as surfactants.

scholarly journals Low-temperature and purification-free stereocontrolled ring-opening polymerisation of lactide in supercritical carbon dioxide

2020 ◽  
Vol 22 (7) ◽  
pp. 2197-2202 ◽  
Author(s):  
Simon P. Bassett ◽  
Andrew D. Russell ◽  
Paul McKeown ◽  
Isabel Robinson ◽  
Thomas R. Forder ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Low Temperature ◽  
Supercritical Carbon Dioxide ◽  
Ring Opening ◽  
Solvent Free ◽  
Free Ring ◽  
First Time ◽  
Supercritical Carbon

A stereoselective, solvent-free ring-opening polymerisation (ROP) of lactide (LA) in supercritical carbon dioxide (scCO2) is reported for the first time.

Carbon Dioxide-Promoted Three-Component Strecker Reaction

2021 ◽  
Author(s):  
Ruslan V. Fauziev ◽  
Roman E. Ivanov ◽  
Ilya Kuchurov ◽  
Sergei Grigorievich Zlotin
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Strecker Reaction ◽  
First Time ◽  
Supercritical Carbon

Three-component Strecker reaction of aldehydes, amines and KCN has been performed for the first time in supercritical carbon dioxide. In the proposed procedure non-toxic and non-flammable carbon dioxide acts not...

Body temperature polymerization and in situ drug encapsulation in supercritical carbon dioxide

2020 ◽  
Vol 11 (42) ◽  
pp. 6821-6831
Author(s):  
Zi-Kun Rao ◽  
Tian-Qiang Wang ◽  
Yang Li ◽  
Hong-Yu Zhu ◽  
Yu Liu ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Body Temperature ◽  
Supercritical Carbon Dioxide ◽  
Solvent Free ◽  
Drug Encapsulation ◽  
First Time ◽  
Supercritical Carbon

Body-temperature and solvent-free polymerization and in situ fabrication of drug-loaded microparticles are reported for the first time.

scholarly journals Impregnation of poly(L-lactide-ran-δ-valerolactone) with essential bark oil using supercritical carbon dioxide

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Chikara Tsutsumi ◽  
Souta Manabe ◽  
Susumu Nakayama ◽  
Yuushou Nakayama ◽  
Takeshi Shiono
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Azeotropic Distillation ◽  
Proteinase K ◽  
High Yield ◽  
Feed Ratio ◽  
One Pot ◽  
Molecular Weights ◽  
Hydrolysis Process ◽  
Supercritical Carbon

Abstract This work studied the incorporation of essential bark oil from Thujopsis dolabrata var. hondae, which is known to repel various insects, in poly(L-lactide-ran-δ-valerolactone) [poly(L-LA-ran-VL)] using supercritical carbon dioxide (scCO2). The poly(L-LA-ran-VL) was synthesized by first purifying the monomers by azeotropic distillation with benzene, followed by polymerization with Sn(oct)2 using the same equipment, representing an efficient one-pot process. The copolymerization of L-LA with VL using this technique at a feed ratio of 90/10 mol/mol gave poly(L-LA-ran-VL) (91/9) with a molecular weight of 6.48 × 104 g/mol and a high yield of 74.9%. Products with molecular weights over 5.0 × 104 g/mol were obtained at L-LA feed proportions of 70 to 90%. Impregnation trials were conducted between 40 and 120 °C at 14 MPa for 3 h. The oil content of a 73/27 specimen was found to increase significantly during processing at 100 or 120 °C. During enzymatic degradation with proteinase K, the 91/9 specimen showed the fastest degradation rate. Although the 71/29 sample was slowly hydrolyzed in a phosphate buffer at pH 7.0, the release of oil vapor from this material was slightly higher than that from the 91/9 specimen, and the vapor release rate continuously increased throughout the hydrolysis process.

One-Pot Procedure to Synthesize High Surface Area Alumina Nanofibers Using Supercritical Carbon Dioxide

Langmuir ◽  
2010 ◽  
Vol 26 (4) ◽  
pp. 2707-2713 ◽  
Author(s):  
Muhammad B. I. Chowdhury ◽  
Rouhong Sui ◽  
Rahima A. Lucky ◽  
Paul A. Charpentier
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
One Pot ◽  
Alumina Nanofibers ◽  
Supercritical Carbon
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