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 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.

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.

Ordered and foam structures of semifluorinated block copolymers in supercritical carbon dioxide

Soft Matter ◽  
2012 ◽  
Vol 8 (21) ◽  
pp. 5811 ◽  
Author(s):  
Tomoaki Shinkai ◽  
Masateru Ito ◽  
Kenji Sugiyama ◽  
Kohzo Ito ◽  
Hideaki Yokoyama
Keyword(s):  
Carbon Dioxide ◽  
Block Copolymers ◽  
Supercritical Carbon Dioxide ◽  
Supercritical Carbon

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.

Thermally robust nanocellular thin films of high-Tg semifluorinated block copolymers foamed with supercritical carbon dioxide

Soft Matter ◽  
2011 ◽  
Vol 7 (8) ◽  
pp. 4032 ◽  
Author(s):  
Rui Zhang ◽  
Cedric Dutriez ◽  
Kenji Sugiyama ◽  
Takashi Ishizone ◽  
Hideaki Yokoyama
Keyword(s):  
Thin Films ◽  
Carbon Dioxide ◽  
Block Copolymers ◽  
Supercritical Carbon Dioxide ◽  
Supercritical Carbon

Putting the fizz into chemistry: applications of supercritical carbon dioxide in tissue engineering, drug delivery and synthesis of novel block copolymers

2007 ◽  
Vol 35 (3) ◽  
pp. 516-521 ◽  
Author(s):  
H. Tai ◽  
V.K. Popov ◽  
K.M. Shakesheff ◽  
S.M. Howdle
Keyword(s):  
Carbon Dioxide ◽  
Drug Delivery ◽  
Tissue Engineering ◽  
Block Copolymers ◽  
Supercritical Carbon Dioxide ◽  
Drug Carriers ◽  
Controlled Polymerization ◽  
Polymeric Scaffolds ◽  
Potential Use ◽  
Supercritical Carbon

This paper describes the recent progress at Nottingham towards the exploitation of the unique properties of scCO2 (supercritical carbon dioxide) for the preparation of polymeric scaffolds for tissue engineering applications and new devices for controlled drug delivery, as well as the synthesis of novel block copolymers by the combination of eROP (enzymatic ring opening polymerization) and controlled polymerization methods for the potential use as drug carriers.

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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