What is interfacial phenomena in physical pharmacy?
Interfacial phenomena affect drug delivery systems. For example, solubilization and dispersion of drugs, suspension or emulsion stability, and adsorption of drugs on different substrates are all affected by the interfacial properties of drugs and their environment.
What is interfacial phenomenon?
Interfacial phenomena are behaviors that occur at the interface or boundary surface between a suspended particle and the continuous phase material in which it is suspended. The particles can be in the solid, liquid or gaseous phase; and the continuous phase medium can also be solid, liquid or gas.
What are the affect factors of the interfacial phenomena in pharmacy and medicine?
Interfacial phenomena in pharmacy and medicine are significant factors that affect adsorption of drugs onto solid adjuncts in dosage forms, penetration of molecules through biologic membranes, emulsion Page 2 formation and stability, and the dispersion of insoluble particles in liquid media to form suspensions.
What is pharmacy interface?
When two phases meet, the boundary between them is called an interface. Drugs, to have a pharmacological effect must either interact with or pass through a number of interfaces. In some cases the dosage form itself contains a number of interfaces.
What is surface and interfacial phenomena?
In short; surface tension is the property of the liquid in contact with gas phase (usually air). Interfacial tension, on the other hand, is the property between any two substances. It could be liquid-liquid, liquid-solid or solid-air.
What is liquid interface in physical pharmaceutics?
LIQUID INTERFACES Surface and Interfacial Tensions In the liquid state, the cohesive forces between adjacent molecules are well developed. For the molecules in the bulk of a liquid They are surrounded in all directions by other molecules for which they have an equal attraction.
What is surface and interfacial phenomenon?
Surface tension: It is defined as tensile force acting at the surface of liquid which is in contact with gas or it may be between two immiscible liquids. Interfacial tension: It is the force per unit length that exist at the interface between two immiscible liquid phases. Positive adsorption: interface.
What is the surface and interfacial phenomena?
What is the principle behind surface tension and interfacial phenomena?
While the molecules at the surface of the liquid experience an inward force toward the bulk. This force pulls the molecules of the interface together and stretch the surface. It means some tensile force is acting on the surface which is called surface tension. immiscible liquid phases.
What is surface and interfacial tension in physical pharmaceutics?
What is a pharmaceutical importance of study the interfacial phenomena?
Testing and understanding interfacial phenomena adds an extra dimension to our product development activities. It gives our clients a clearer picture of how their products – whether that’s coffee grounds or a diagnostic reagent – will interact with the systems we are developing for them.
How many types of pharmacy interfaces exist?
There are two types of automated pharmacy interface workflows to consider, depending on how you want to manage your operations. Pharmacy-centric, where the pharmacy enters the order and pushes it to your electronic medical record.