New information following the change in COVID-19 alert levels. massey.ac.nz/coronavirus

Shakti Singh

Doctor of Philosophy
Study Completed: 2017
College of Sciences

Citation

Thesis Title
Interactions of moving particles and bubbles in air: a micro-level process approach

Read article at Massey Research Online: MRO icon

Particulate materials are important to many industries including pharmaceuticals, paints, and of course food. Food powders include milk powders, cocoa, and flours. Controlling powder surface properties by coating particles is often key to achieving appropriate target attributes but achieving a fine, even coating at high speed is challenging. Mr Singh proposed and developed a new method of powder coating, using foams and bubbles. He observed single particles (large/small; smooth/rough) contacting single bubbles and recorded the resulting bubble-particle interactions by high speed video. Under certain conditions, particles penetrated a bubble which self-healed after impact. Under others, particles stuck to or slid over the bubble surface or the bubble burst to form fine droplets. Each phenomenon can offer a route to coat a particle singly or in combination.

Supervisors
Professor Richard Archer
Professor Jim Jones
Professor Clive Davies
Professor Matt Golding

Contact us Mon - Fri 8:30am to 4:30pm 0800 MASSEY (+64 6 350 5701) TXT 5222 contact@massey.ac.nz Web chat Staff Alumni News Māori @ Massey