The rheological parameters were viscosity (cp), torque%, shear stress (dyne/cm2) and shear rate (s–1).
What is surfactant in chemistry? surfactant, also called surface-active agent, substance such as a detergent that, when added to a liquid, reduces its surface tension, thereby increasing its spreading and wetting properties.
Similarly, What are rheological properties of fluids? Rheological properties refer to the Bingham plastic fluid parameters such as yield point (YP) and plastic viscosity (PV). It is one of the several flow characteristics of drilling fluid, workover fluid or completion fluid or cement.
What are rheological properties of polymers?
Polymer rheology testing is the study of how the stress in a material or force applied is related to deformation and flow of the material.
What are rheological properties of concrete?
The rheological properties of fresh concrete are related to cement hydration and chemical interactions in the cement paste system [1]. In addition, the rheological properties of concrete are also dependent on the shape and gradation of the aggregates (coarse and fine) contained in the mixture.
What are the 4 types of surfactants?
The answer is yes, there are four different types of surfactants which are nonionic, anionic, cationic, amphoteric. These surfactants differ in composition and polarity. Surfactants also known as surface active agents, are used to lower the surface tension between liquids.
Which is not surfactant? CH3(CH2)14CH2NH2 has only hydrophobic part and insignificant hydrophilic part.
What does anionic and nonionic mean? The key difference between anionic cationic and nonionic surfactants is that anionic surfactants contain negatively charged functional groups, and cationic surfactants contain positively charged functional groups, whereas nonionic surfactants have no net electrical charge.
What is rheological properties of food?
Food rheology is the study of the consistency and flow of food under specified applied forces, to understand the underlying physicochemical principles of ‘structuring’ by food materials and their interaction.
What are rheological properties of asphalt? The aging properties of asphalt binders are normally characterized by measuring physical and rheological properties (e.g. softening point, penetration, viscosity and complex modulus) before and after artificial aging in the laboratory.
What are Newtonian and non-Newtonian fluids?
Newtonian fluids obey Newton’s law of viscosity. The viscosity is independent of the shear rate. Non-Newtonian fluids do not follow Newton’s law and, thus, their viscosity (ratio of shear stress to shear rate) is not constant and is dependent on the shear rate.
Which one of the following physical property is not a rheology property?
| Q. | Which one of the following physical Property is NOT a rheological property? |
|---|---|
| B. | spreadability |
| C. | surface tension |
| D. | viscosity |
| Answer» c. surface tension |
What are the rheological properties of food?
The rheological properties of liquid food are altered based on the thermal properties such as density, heat capacity and thermal conductivity. The most important factors which determine the properties of liquid food are shear flow properties. These are based on shear rate and shear stress.
What are the factors affecting properties of concrete?
Concrete strength is affected by many factors, such as quality of raw materials, water/cement ratio, coarse/fine aggregate ratio, age of concrete, compaction of concrete, temperature, relative humidity and curing of concrete.
What are the factors affecting the rheological behavior of concrete? The rheological properties of concrete are dependent on the factors like mix proportions, consistency, the properties of each ingredient present in the mix, the mixing amount and the admixture amount, the time elapsed after mixing.
What are three types of surfactants?
Types of Surfactants
- Anionic Surfactants. Anionic surfactants have a negative charge on their hydrophilic end. …
- Nonionic Surfactants. Nonionic surfactants are neutral, they do not have any charge on their hydrophilic end. …
- Cationic Surfactants. …
- Amphoteric Surfactants.
What are some examples of surfactants?
Sodium stearate is a good example of a surfactant. It is the most common surfactant in soap. Another common surfactant is 4-(5-dodecyl)benzenesulfonate. Other examples include docusate (dioctyl sodium sulfosuccinate), alkyl ether phosphates, benzalkaonium chloride (BAC), and perfluorooctanesulfonate (PFOS).
Is soap a surfactant? Soaps and detergents are made from long molecules that contain a head and tail. These molecules are called surfactants; the diagram below represents a surfactant molecule.
Which of the following is not ionic surfactant?
Various types of non-ionic surfactants, such as polyglycerol alkyl ethers, glucosyl dialkyl ethers, crownethers, ester-linked surfactants, polyoxyethylene alkyl ethers, Brij, Spans (sorbitan esters) and Tweens (Polysorbates), used for the preparation of niosomes fall into the GRAS category and are mild to use [103].
Which of the following Cannot behave as a surfactant? CH3−(CH2)14−CH2NH2.
Which one is a surfactant?
Sodium stearate is a good example of a surfactant. It is the most common surfactant in soap. Another common surfactant is 4-(5-dodecyl)benzenesulfonate. Other examples include docusate (dioctyl sodium sulfosuccinate), alkyl ether phosphates, benzalkaonium chloride (BAC), and perfluorooctanesulfonate (PFOS).
What are non ionic? Definition of nonionic
: not ionic especially : not dependent on a surface-active anion for effect nonionic surfactants.
What are the 3 types of surfactants?
Types of Surfactants
- Anionic Surfactants. Anionic surfactants have a negative charge on their hydrophilic end. …
- Nonionic Surfactants. Nonionic surfactants are neutral, they do not have any charge on their hydrophilic end. …
- Cationic Surfactants. …
- Amphoteric Surfactants.
Are soaps anionic or cationic? This is also called Hydrophilic (Greek word meaning Water-Loving) and Hydrophobic (Greek word meaning runs away from water). Most types of soaps and detergents are anionic surfactants which means they have a positive and negative charge on either end of the molecule.