The study on the preparation process of PEG pellets by vibration nozzle method

Area of Science:

• Materials Science
• Chemical Engineering
• Process Optimization

Background:

• The vibration nozzle method offers a pathway for uniform bead production.
• Polyethylene glycol (PEG) pellets are synthesized using this technique.

Purpose of the Study:

• To prepare polyethylene glycol pellets via a vibration nozzle machine.
• To investigate the influence of nozzle wall thickness, stirrer rotation speed, and excitation voltage on pellet formation.

Main Methods:

• Utilized a vibration nozzle machine for polyethylene glycol pellet synthesis.
• Employed response surface methodology and the Weber equation to analyze process parameters.
• Investigated the effects of vibration frequency (f), jet velocity (v), and excitation voltage (V) on average diameter (d) and standard deviation (SD%).

Main Results:

• A nozzle wall thickness of ≤0.1 mm was found to reduce jet adherence.
• Optimal stirring at 20 rotations/min facilitated dispersion of unsolidified pellets.
• A strong linear regression between average diameter (d) and the ratio of jet velocity to vibration frequency (v/f) was established under optimal excitation voltage (V = 3.0 V).

Conclusions:

• Optimized process parameters, including nozzle wall thickness and excitation voltage, are crucial for controlling polyethylene glycol bead size and uniformity.
• The vibration nozzle method, when optimized, can achieve high jet velocity and low standard deviation in pellet diameter.
• This research provides a foundation for scalable and efficient production of uniform polyethylene glycol beads.