Microencapsulation

What will I learn?
This course covers the basic science and engineering of microencapsulation across a wide range of applications including the important stages of emulsification control, stability and release property control. While the majority of the course involves emulsions, multiple emulsions and particle coating are also included as well as details of the range of valuable characterisation tools and their applicability. The emphasis is on understanding the flow behaviour of the interaction of the various components in such complex systems. This should provide the basis for a rational approach to formulating and producing micro encapsulates to meet a range of needs.

For 2017 the course has been fully redeveloped offering a programme of academic and industry cooperation taking delegates from the basic science through to manufactured products. The programme also includes interactive demonstrations, industry presentations and the opportunity for delegates to bring posters for discussion with the course cohort, speakers and PhD students.

On completion of this course you’ll have an understanding of:

  • developing a rational approach to formulate or modify emulsions for optimal processing behaviour, and using available laws and scaling relations to predict behaviour
  • the various methods of turning emulsions into encapsulates, including the process conditions that impact their final properties and behaviour
  • selecting characterisation devices and defining measurement procedures for a specific application
  • evaluating and interpreting experimental data.

 

The 2018 course programme and leaflet will be available approximately 3 months prior to the course. However, you can view and download the 2017 course details for further information by clicking the course leaflet and course programme link.

Day 1:

Basic science and key points around microencapsulation: what you need to know to get started

  • Map to guide you through the course: microencapsulation methods vs product requirements
  • Important properties of microcapsules (type, shape, size, release charateristics, strength)
  • Important properties of system to encapsulate (Hansen solubility parameter)
  • How to decide on an affordable microencapsulation methods - economics behind encapsulation

Spray Drying

  • Droplets and sprays in encapsulation: background in forming droplets from nozzles and common process units
  • Demonstration session:
    • Spray Drying
    • Evidencing release from alginate-based microcapsules
    • Metal shell capsules preparation - achieving retention and triggered release of small volatile actives
    • Manufacturing monodisperse droplet templates via membrane emulsification
  • Structure of liquid/importance of fluid properties
  • Industry presentation on spray drying

Day 2:

Coating of Particles

  • Atomisation of coating liquid, spreading and drying on particle surfaces - including surface energy, liquid viscosity and particle shape 
  • Process - fluid bed coaters, pan coaters
  • Industry presentation on coating of solid particles using fluid beds

Emulsion-based methods

  • Short introduction on what the rest of the course will focus on regarding these methods - focus on emulsion-based encapsulation methods
  • Emulsion theory, importance of miscibility/cLogP, how useful is HLB of surfactants, Pickering emulsions/colloidosomes
  • Droplet size control theory, importance of surface energy, viscosity and size of molecules
  • Demonstration session:
    • Spray Drying
    • Evidencing release from alginate-based microcapsules
    • Metal shell capsules preparation - achieving retention and triggered release of small volatile actives
    • Manufacturing monodisperse droplet templates via membrane emulsification
  • Industry presentation - complex coacervation methods

Day 3:

Emulsion-based methods - turning emulsions into core-shell microcapsules

  • Turning the oil/water interface into a shell: brief reminder of past/current methods and a focus on an alternative method
  • Interfacial polymerisation: traditional vs potential of living radical polymerisation methods
  • Colloidosomes: from Pickering emulsions to particle-shell microcapsules
  • Encapsulation via emulsion and other chemical processes

 

This course is for you if you’re a scientist or engineer in the chemical, petroleum, polymers, coatings, inks, food, pharmaceuticals, cosmetics or general chemical industries with responsibility for R&D projects, process engineering, manufacturing or product formulation involving incorporating microencapsulates into formulated products.

"An inspiring and comprehensive course. I leave feeling well informed and connected." Unilever

"Excellent overview on microencapsulation - covering theory, practicalities and characterisation." Quotient Clinical Ltd

"Very useful, comprehensive course covering the basics and more advanced areas of microencapsulation." Pliva Croatia

"Excellent taster into microencapsulation allows a broad overview to store and bring out when required and furthers my understanding of current used processes" FMC

 

Course Directors

Professor David York - University of Leeds and Dr Olivier Cayre, University of Leeds

2018 fees tbc

Fees include:

  • cost of tuition
  • course materials
  • lunches
  • light refreshments
  • course dinner

Faculty of Engineering
University of Leeds
Leeds
LS2 9JT

Car parking for visitors is unavailable at the University.

The nearest public car park is Woodhouse Lane (multi storey) at LS1 3HQ. The car park is open 24 hours. Charges apply (£6.00 up to twelve hours). Please click here for information and location details. Please note this car park is a fifteen minute walk to/from our building and delegates should allow ample time to park and register for the course.

There is also limited on-street parking in the vicinity of the University.

You’re responsible for your own accommodation, if required. A list of hotels close to the University will be sent with your course joining instructions.

+ 44 (0)113 343 2494
cpd@engineering.leeds.ac.uk

CPD Conference and Events Unit
Faculty of Engineering,
University of Leeds,
Leeds
LS2 9JT