TY - JOUR
T1 - Two component model oils for interfacial shear characterization
AU - Rahman, Minhaz
AU - Zhao, Xiaofei
AU - Christopher, Gordon F.
N1 - Funding Information:
Yet commercial links alone cannot completely account for the rise of DNA-based technology. Unlike protoplast fusion, recombinant DNA technology was applicable to a wide range of activities in the biological sciences, hence its adoption by ‘‘molecular biology laboratories around the world.’’77 Somatic hybridization was instead the preserve of plant scientists, hence the complaints of Gleba and Sytnik. Cocking believes it was the genetic expertise of the Brookhaven team that allowed them to create the first somatic hybrid; in fact, geneticists initially turned to protoplasts in their quest to modify organisms.78 Yet a number of factors ultimately favored the uptake of recombinant DNA technology as the go-to method of genetic modification of plants. It was not simply a matter of recombinant DNA being a far easier or more reliable technology, as the creation of GM plants still involves elements of chance and wastefulness. Recombinant DNA was also favored by its place within the rising discipline of molecular biology, leading to widespread interest from both science and industry. Yet this is not to say that somatic hybridization research suffered from a lack of investment. Cocking, for instance, found himself with sixteen years’ worth of funding from the United Kingdom’s Agricultural Research Council in 1969.79
Publisher Copyright:
© 2019
PY - 2019/12/20
Y1 - 2019/12/20
N2 - The impact of interfacial properties on the processing of crude oil/water emulsions has led to increased studies examining films of asphaltene, the most surface active components of crude oil. However, crude has other surface active components. Although asphaltenes create a strong viscoelastic interfacial film at concentrations found in crude, the study of asphaltene films is limited in utility due to differences between their behavior and films composed from crude. However, crude oils are difficult to work with and characterize and are too complex to allow systematic studies. There is a need for more accurate but simple models of crude that could be used in various types of interfacial deformation. In this work, a simple two component model oil comprised asphaltenes, and resins dissolved in toluene's are compared to both crude and single component interfaces undergoing interfacial shear. The two component model interface creates a response qualitatively like crude in both aggregation kinetics and strain sweep, whereas pure resin and asphaltene interfaces behave completely different. By adjusting the relative concentration of resin and asphaltene in the model oil, different types of oil are made that correspond to medium and heavy crudes.
AB - The impact of interfacial properties on the processing of crude oil/water emulsions has led to increased studies examining films of asphaltene, the most surface active components of crude oil. However, crude has other surface active components. Although asphaltenes create a strong viscoelastic interfacial film at concentrations found in crude, the study of asphaltene films is limited in utility due to differences between their behavior and films composed from crude. However, crude oils are difficult to work with and characterize and are too complex to allow systematic studies. There is a need for more accurate but simple models of crude that could be used in various types of interfacial deformation. In this work, a simple two component model oil comprised asphaltenes, and resins dissolved in toluene's are compared to both crude and single component interfaces undergoing interfacial shear. The two component model interface creates a response qualitatively like crude in both aggregation kinetics and strain sweep, whereas pure resin and asphaltene interfaces behave completely different. By adjusting the relative concentration of resin and asphaltene in the model oil, different types of oil are made that correspond to medium and heavy crudes.
KW - Asphaltene
KW - Crude
KW - Interfacial rheology
KW - Resin
UR - http://www.scopus.com/inward/record.url?scp=85072242675&partnerID=8YFLogxK
U2 - 10.1016/j.colsurfa.2019.123780
DO - 10.1016/j.colsurfa.2019.123780
M3 - Article
AN - SCOPUS:85072242675
VL - 583
JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects
JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects
SN - 0927-7757
M1 - 123780
ER -