Characterization of palmitic and lauric acid aerosols from rapid expansion of supercritical CO2 solutions

被引：11

作者：

Gadermann, Moritz ^{[1
]}

Preston, Thomas C. ^{[1
]}

Troster, Charles ^{[1
]}

Signorell, Ruth ^{[1
]}

机构：

[1] Univ British Columbia, Dept Chem, Vancouver, BC V6T 1Z1, Canada

来源：

MOLECULAR PHYSICS | 2008年 / 106卷 / 07期

基金：

加拿大创新基金会; 加拿大自然科学与工程研究理事会;

关键词：

palmitic acid aerosol; lauric acid aerosol; rapid expansion of supercritical solutions; infrared spectroscopy; particle agglomeration;

D O I：

10.1080/00268970802020355

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Palmitic acid aerosols and lauric acid aerosols were generated by rapid expansion of supercritical CO2 solutions. The particle properties were analysed by rapid-scan infrared spectroscopy in situ, by X-ray powder diffraction, with a scanning mobility particle sizer, and by scanning electron microscopy. Particles with irregular elongated shapes were found. Most particles and agglomerates have sizes between 250 and 750 nm. Fewer agglomerates with sizes up to several microns are observed. Our investigation reveals that strong agglomeration takes place at the Mach disc. Palmitic and lauric acid particles are both crystalline and most particles crystallize in the C-form.

引用

页码：945 / 953

页数：9

共 32 条

[1] MEASUREMENT AND MODEL PREDICTION OF SOLUBILITIES OF PURE FATTY-ACIDS, PURE TRIGLYCERIDES, AND MIXTURES OF TRIGLYCERIDES IN SUPERCRITICAL CARBON-DIOXIDE [J].

BAMBERGER, T ;

ERICKSON, JC ;

COONEY, CL ;

KUMAR, SK .

JOURNAL OF CHEMICAL AND ENGINEERING DATA, 1988, 33 (03) :327-333

[2]

Bohren C.F., 1998, ABSORPTION SCATTERIN

[3] On the crystal structures and melting point alternation of the n-alkyl carboxylic acids [J].

Bond, AD .

NEW JOURNAL OF CHEMISTRY, 2004, 28 (01) :104-114

[4] Characterization of the rapid expansion of supercritical solutions by Fourier transform infrared spectroscopy in situ -: art. no. 053904 [J].

Bonnamy, A ;

Hermsdorf, D ;

Ueberschaer, R ;

Signorell, R .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2005, 76 (05)

[5] Infrared spectroscopy of acetic acid and formic acid aerosols: pure and compound acid/ice particles [J].

Gadermann, Moritz ;

Vollmar, Daniel ;

Signorell, Ruth .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2007, 9 (32) :4535-4544

[6] Hydrodynamic and aerosol modelling of the rapid expansion of supercritical solutions (RESS-process) [J].

Helfgen, B ;

Türk, M ;

Schaber, K .

JOURNAL OF SUPERCRITICAL FLUIDS, 2003, 26 (03) :225-242

[7] Infrared spectra of phenanthrene particles generated by pulsed rapid expansion of CO2 solutions [J].

Hermsdorf, D ;

Bonnamy, A ;

Suhm, MA ;

Signorell, R .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2004, 6 (19) :4652-4657

[8] Formation and stabilization of ibuprofen nanoparticles by pulsed rapid expansion of supercritical solutions [J].

Hermsdorf, Dana ;

Jauer, Stephan ;

Signorell, Ruth .

MOLECULAR PHYSICS, 2007, 105 (08) :951-959

[9]

Hinds W. C., 1999, AEROSOL TECHNOLOGY

[10] SOLUBILITY OF 1-HEXADECANOL AND PALMITIC ACID IN SUPERCRITICAL CARBON-DIOXIDE [J].

KRAMER, A ;

THODOS, G .

JOURNAL OF CHEMICAL AND ENGINEERING DATA, 1988, 33 (03) :230-234

← 1 2 3 4 →