scholarly journals Low-density polymer thin film formation in supercritical carbon dioxide

2003 ◽  
Vol 83 (21) ◽  
pp. 4309-4311 ◽  
Author(s):  
Tadanori Koga ◽  
Y.-S. Seo ◽  
J. L. Jerome ◽  
S. Ge ◽  
M. H. Rafailovich ◽  
...  
Keyword(s):  
Thin Film ◽  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Film Formation ◽  
Low Density ◽  
Polymer Thin Film ◽  
Thin Film Formation ◽  
Supercritical Carbon

From micro/nano structured isotactic polypropylene to a multifunctional low-density nanoporous medium

RSC Advances ◽  
2016 ◽  
Vol 6 (109) ◽  
pp. 108056-108066 ◽  
Author(s):  
Mehdi Saniei ◽  
Minh-Phuong Tran ◽  
Seong-Soo Bae ◽  
Piyapong Boahom ◽  
Pengjian Gong ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Thermal Conductivity ◽  
Porous Medium ◽  
Supercritical Carbon Dioxide ◽  
Isotactic Polypropylene ◽  
Low Density ◽  
Low Thermal Conductivity ◽  
Supercritical Carbon

A homogeneous low-density nano-porous medium of isotactic polypropylene (iPP) with a low thermal conductivity was fabricated using supercritical carbon dioxide (scCO2).

Polymer thin film formation on low-gravity aircraft and on ISS

2001 ◽  
Author(s):  
P. Todd ◽  
S. Dunn ◽  
A. Greenberg ◽  
W. Krantz ◽  
V. Khare ◽  
...  
Keyword(s):  
Thin Film ◽  
Film Formation ◽  
Low Gravity ◽  
Polymer Thin Film ◽  
Thin Film Formation

scholarly journals Effects of Ethanol on the Supercritical Carbon Dioxide Extraction of Cannabinoids from Near Equimolar (THC and CBD Balanced) Cannabis Flower

Separations ◽  
2021 ◽  
Vol 8 (9) ◽  
pp. 154
Author(s):  
Sadia Qamar ◽  
Yady J. M. Torres ◽  
Harendra S. Parekh ◽  
James Robert Falconer
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
High Performance ◽  
Low Density ◽  
Reverse Phase ◽  
Extract Yield ◽  
Rp Hplc ◽  
Carbon Dioxide Extraction ◽  
Chemical Profiles ◽  
Supercritical Carbon

In this study, supercritical carbon dioxide (scCO2) extractions of cannabinoids were conducted at four different densities (231, 590, 818, and 911 kg/m3) using ethanol (5% w/v) as a co-solvent. The chemical profiles of these cannabinoids were analysed via reverse-phase high-performance liquid chromatography (RP-HPLC). It was determined that scCO2, at low density (231 kg/m3), produced an extract yield of 6.1% w/v. At high scCO2 density (~818 kg/m3), the yield was 16.1% w/v. More specifically, the amounts of tetrahydrocannabinol (THC) and cannabidiol (CBD) in the scCO2 extract at 818 kg/m3 were 10.8 and 15.6% w/v, respectively. It was also found that the use of 5% w/v ethanol increased scCO2 extract yields at both low and high densities (7.6% w/v and 18.2% w/v, respectively). Additionally, the use of co-solvent increased this yield further under both low- and high-density conditions, to 13.7 and 19.1% w/v, respectively. Interestingly, higher scCO2 density (911 kg/m3) with and without ethanol did not improve the scCO2 extract yield or the amount of cannabinoids. Although this study provides new insights into the correlation between scCO2 density and ethanol co-extraction of CBD and THC, more studies are needed to determine how different scCO2 densities and co-solvents influence the extraction of cannabinoids.

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