Phase behaviour of l-lactic acid based polymers of low molecular weight in supercritical carbon dioxide at high pressures

2009 ◽  
Vol 51 (2) ◽  
pp. 270-277 ◽  
Author(s):  
J. Gregorowicz ◽  
P. Bernatowicz
Keyword(s):  
Carbon Dioxide ◽  
Molecular Weight ◽  
Lactic Acid ◽  
Supercritical Carbon Dioxide ◽  
High Pressures ◽  
Phase Behaviour ◽  
Low Molecular Weight ◽  
Supercritical Carbon

Note: Fractionation of Sheep Milk Fat Via Supercritical Carbon Dioxide

2004 ◽  
Vol 10 (6) ◽  
pp. 421-425 ◽  
Author(s):  
V. Spano ◽  
A. Salis ◽  
S. Mele ◽  
P. Madau ◽  
M. Monduzzi
Keyword(s):  
Carbon Dioxide ◽  
Molecular Weight ◽  
Chemical Composition ◽  
Supercritical Carbon Dioxide ◽  
High Molecular Weight ◽  
Milk Fat ◽  
Low Molecular Weight ◽  
Sheep Milk ◽  
Supercritical Carbon

Supercritical carbon dioxide (SC-CO2) was used for anhydrous ovine milk fat (AMF) fractionation. Two different fractions were obtained: a low molecular weight triacylglycerol (TAG), named fraction E, and a high molecular weight TAG, termed fraction R. Fractionation was performed at different pressure and temperature values. The effect of these parameters on the chemical composition of the two fractions were analysed in relation to the original AMF. Among the searched conditions, 250 bar and 40°C gave the best fractionation results.

Nanocellular and needle-like structures in poly(l-lactic acid) using spherulite templates and supercritical carbon dioxide

RSC Advances ◽  
2015 ◽  
Vol 5 (46) ◽  
pp. 36320-36324 ◽  
Author(s):  
Junsong Li ◽  
Guangjian He ◽  
Xia Liao ◽  
Hao Xu ◽  
Qi Yang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Lactic Acid ◽  
Supercritical Carbon Dioxide ◽  
Supercritical Carbon

The random nanocells and the radial needle-like cells are formed in the interlamellar amorphous regions of spherulites in PLLA.

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