Details of Particle design Technology

Purppose

• Improves particle flowability and fillability
• Improved thermal and mechanical strength and electrical properties
• Improved solubility
• Control of elution rate
• Improve solubility, Control dissolution rate, Give each particle the functions of multiple types of particles
• Improvement of chemical reaction speed
• Improvement of chemical reaction speed

The above has been achieved.

Why do we need particle design now?

It is widely known that powders have problems such as agglomeration and adhesion. Particularly in the application of nanoparticles, which has been gaining popularity in recent years, it is necessary to overcome the incomparably strong cohesion.
There have been many attempts to control the aggregation at the molecular level, but this may impair the functionality of the molecules themselves, so particle design technology that can control the physical properties at the particle level is attracting attention.

Particle Design Methods: Difference between Dry and Wet Methods

Particle design methods can be roughly divided into dry and wet methods.

• Wet method

Polymerization of polymers, precipitation of solute in solvent on mother particles, sol-gel method, synthesis of nanoparticles in liquid phase, etc.

• Characteristics : High sphericity particles
• Composite particles with a very homogeneous coating layer
• Problems and improvements
•  In general, chemical reactions are often used, and there are restrictions on materials to be used. 　　
• In many cases, organic solvents are used, making it difficult to reduce the environmental impact.
  Then, a drying process is required, resulting in reagglomeration of particles and high cost.

• Drying method

The dry method uses equipment developed based on crushers and mixers.
Problems and improvements
In general, it is difficult to obtain particles with a complete coating layer as in the wet method.
Features - Extremely wide range of material combinations
=Almost all patterns (organic-organic, organic-inorganic, inorganic-inorganic) are possible.

• No drying process is required.
• Simple process
• Low running cost