Several Method to Form Colloid You Can Use
There are many ways to reduce a solid particle into a liquid then use them for any purpose you need. The mixture of solid particle that turn into a liquid is called Colloids, colloids may exist as a gel, emulsion, aerosol, solid, foam or a solid aerosol. In forming colloids, you can use two methods; it can be dispersion and condensation. Each of them have different way to form colloids, Dispersion is a method that employ several technique, such as size reduction, peptization and homogenization. Today I will provide you any information about method that can be use to form colloids properly and choose according your need.
The first method is called size reduction. Size reduction method is work by breaking down any large particles into smaller ones of colloidal size. This method usually employed colloid mill as a tool to reducing size of solid material into smaller particles. Colloid mills using rotating and stating elements that exert a hydraulic and shearing force. The centrifugal force and high velocity of colloid mills rotor cause any substance especially liquid and semi liquid material to become finely dispersed. This way, colloid mills are able to break particles into colloidal size for further process. Make sure that you choose colloid mill that provide high performance capacity to achieve highly stable emulsions and ensure high degree of homogenization and particle size to 1 micron. This method can be use for pharmaceutical, cosmetic, paint, soap, textile, paper and food industries. One example of size reduction method is by using colloid mills to perform bitumen modification. Bitumen modification is use to create bitumen emulsion for road construction that is economical, environmentally friendly and safe. For instance, generally using 1200 per square meter to treating asphalt pavement using gravel, using bitumen emulsion, you only need 500 grams of emulsion for 1 square meter.
The second method is called peptization. Peptization or deflocculating is method to disperse the material so it will forms colloids. Using peptizing agent to provide ions, the material particles will adsorb these ions and cause the precipitate particles to disperse then forming a colloid. This method is represented by adding a small volume of very dilute hydrochloric acid solution to aluminum hydroxides and resulted on aluminum hydroxide colloid.
The third method is called homogenization. This method is considered the easiest way to from colloids. This mechanical method to form colloid is using fluids to break down substation into colloidal size particle and provides a stable emulsion. This method sometime use emulsifying agent to ensure that there is no aggregation of the colloidal particles at a later time. Homogenization are commonly use for processing milk or other dairy products.
The fourth method is called condensation. This method is different than size reduction, peptization and homogenization method. While other method involving the dispersion of aggregates, the condensation method work by employing hydrolysis, oxidation, reduction and displacement causing coalescence of tiny particles into colloidal sized particles. This method can be seen on the formation of mist and fog.