Programme 

08:50      Registration
09:25      Welcome introduction – Simon Gibbon

Session 1
09:30      Continuous production of biopolymer based encapsulates
               Prof Janet Scott | University of Bath

10:10      TBC

10:30      TBC

10:50      Coffee break / networking / posters

Session 2
11:20     Occlusion of oil droplets within calcite crystals
              Prof Steven Armes | University of Sheffield

12:00      TBC

12:20      Exhibitor highlights

12:30      Lunch / Networking / FSTG AGM

Session 3
14:00      Novel means of encapsulation route using a membrane emulsification process at elevated temperatures
               Prof David York | University of Leeds

14:40      TBC

15:00      TBC

15:20      TBC

15:40      Coffee / Networking

Session 4
16:00      Encapsulation technologies for self-healing in cementitious systems
               Prof Abir Al-Tabbaa | University of Cambridge

16:40      TBC

17:00      Networking with festive mulled wine

18:00      Close

 

Speakers Abstracts

 

 

 

 

PROF JANET SCOTT | UNIVERSITY OF BATH

Continuous production of biopolymer based encapsulates
Amy Wilson,a Rachael Hutchings,b Ekanem Ekanem,c Davide Mattia,c Karen J. Edler,b Janet L. Scotta
a Centre for Sustainable Chemical Technologies and Department of Chemistry, University of Bath, Claverton Down Bath, BA2 7AY, United Kingdom
b EPSRC Centre for Doctoral Training in Sustainable Chemical Technologies, University of Bath, Claverton Down Bath, BA2 7AY, United Kingdom
c Centre for Advanced Separations Engineering and Department of Chemical Engineering, University of Bath, Claverton Down Bath, BA2 7AY, United Kingdom

Beads or capsules can be produced by membrane emulsification as a low energy, continuous manufacturing process that yields products with narrow particle size distribution.  Filled capsules, or encapsulates, prepared from renewable, biopolymers offer opportunities for production of biodegradable encapsulates, thus potentially eliminating a small, but unnecessary, source of plastic pollution.  Developing the materials and the production process in tandem leads to a combination of chemistry and processes that are compatible and readily scalable.

 

 

PROF DAVID YORK | UNIVERSITY OF LEEDS

Novel means of encapsulation route using a membrane emulsification process at elevated temperatures.
David York, University of Leeds

Micro encapsulation synthesis routes often involve carrying out chemical reactions to form the wall which drive up manufacturing costs. In addition these limit the choice of materials that can be used for food products. A novel process has been developed that involves making a water in oil in water double emulsion in a controlled manner using membrane emulsification. By running the process at elevated temperatures high melting point materials, such as waxes,  can be used to form the emulsion which, on cooling form a solid encapsulate wall.

This provides the opportunity for triggered release in consumer products as well as encapsulated additives in food.

 

 

 

 

PROF ABIR AL-TABBAA | UNIVERSITY OF CAMBRIDGE

Encapsulation technologies for self-healing in cementitious systems
Prof Abir Al-Tabbaa, Dr Livia Souza and Dr Chrysoula Litina. | University of Cambridge

The presentation will provide an overview of the various encapsulation techniques that have been developed and explored at the University of Cambridge over the past six year to develop self-healing systems for applications in cementitious materials. Microencapsulated technologies presented will include interfacial polymerisation, complex coacervation, microfluidics and memberane emulsification.

Macroencapsulation techniques will include palletisation, hydrogels and spray coating. Applications include civil and environmental applications in concrete, mortars, grout and cemented soil systems. The talk will cover the context, techniques and challenges faced and provide examples of research done to date and recent commercial trials and applications.

 

 

 

PROF STEVEN ARMES | UNIVERSITY OF SHEFFIELD

Occlusion of oil droplets within calcite crystals
Steven Armes | University of Sheffield

It is axiomatic that oil and water do not mix. Similarly, the efficient incorporation of oil within inorganic crystals is highly counter-intuitive because such components are normally considered to be mutually incompatible. Nevertheless, herein we report the efficient occlusion of nano-sized oil droplets within calcite single crystals. First, sterically-stabilized diblock copolymer nanoparticles were prepared via reversible addition-fragmentation chain transfer (RAFT) dispersion polymerization in methanol. These nanoparticles undergo dissociation during high-pressure microfluidization to produce strongly amphiphilic polymeric surfactants that stabilize oil-in-water nanoemulsions. Formation of calcite in the presence of such oil droplets at pH 9 leads to their efficient occlusion. Both copolymer concentration and diblock compositions affect the extent of occlusion, with optimized conditions producing calcite crystals containing up to 30 vol% oil as judged by thermogravimetry. The generic nature of our approach is exemplified by occlusion of various oils. In principle, this provides a versatile route for the incorporation of a wide range of oil-soluble hydrophobic molecules within host crystals for encapsulation and controlled release applications.