Stig E. Friberg
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Stig E. Friberg
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Research
The research is centered on the effect of amphiphilic association structures on the properties of liquid dispersed systems, such as emulsions, microemulsions, foams and vesicle solutions.
Although the research is fundamental in nature, two recent discoveries have industrial relevance.
The first one is concerned with evaporation from and distillation of liquid dispersions, an area of decisive importance for dermatological pharmacy, personal care products, all coatings applications and many other fields. Earlier attempts to clarify these processes have assumed the original structure to remain during evaporation and numerous efforts were made to relate the action of the formulation to the original structure. These attempts were not successful. This result is explained by the research, which revealed decisive structure changes to occur during the evaporation. Hence, the action and processes connected with evaporation of a liquid dispersed system such as a coating or a dermatological formulation are a consequence of the new phases appearing rather than the original formulation.
The second result is a discovery of a mechanism, by which anti- surface-active compounds may become surface-active due to the formation of association structures during evaporation or dilution.
Recent Awards
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2006
Chinese Chemical society, Division of Colloid and Surface Chemistry,“PROFESSOR Stig E. Friberg in recognition of and with gratitude for his excellent scientific contributions..”
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2005
79th ACS CSSS,“Dr STIG FRIBERG an Inspiring educator and innovative phase and colloid chemist.”
Recent Publications
- S. E. Friberg, A. Al-Bawab and A. A. Abdoh
Colloid Polym. Sci 285 (2007) 1625 - 1630
Surface Active Inverse Micelles - S. E. Friberg and J. Sjoeblom
J Dispersion Sci. Technol. 28 (2007) 773 - 777
Evaporation Path in a Liquid Crystal/Hydrocarbon Emulsion in the System Toluene/5- Phenyl Valerate/ 4-Pentylpentanol/ Water System - A. Al-Bawab, S. E. Friberg and M. M. Bergamashi
Int J Pharmacy 332 (2007) 140 - 146
Some Non-Equilibrium Phenomena in the Malic Acid/ Water/ Polysorbate System - S. E. Friberg
J Dispersion Sci. Technol. 28 (2007) 1299 - 1308
Some Emulsion Features
- S. E. Friberg
Colloids Surfaces 282 -283 (2006) 369 - 376
Weight Fractions in a Three- Phase Emulsion with an L(Alpha) Phase - S. E. Friberg and A. Al-Bawab
J Pharm. Sci.. 95 (2006) 1834 - 1840
Phase Behavior of Beta- Hydroxy Acids with Laureth 4 - S. E. Friberg and A. Al-Bawab
Adv. Colloid Interface Sci. 123 - 126 (2006) 313 - 322
Some Pertinent Factors in Skin Care Emulsions - S. E. Friberg
J Dispersion Sci. Technol. 27 (2006) 573 - 577
Evaporation from a Fragrance Emulsion - S. E. Friberg, O. C. Mullins and E. Y. Sheu
J Dispersion Sci. Technol. 26 (2005) 413- 515
Surface Activity of an Amphiphilic Association Structure
- S. E. Friberg and A. Al-Bawab
Langmuir 21 (2005) 9896 - 9900
Analytical Expressions to Calculate Relative Amounts of Phases in a Three-Phase /Emulsion
