A breakthrough in the understanding of polymers – the molecules from which almost everything we use is made – is set to make commercial products, from water bottles to electrical goods, stronger and more effective for their uses.
The team was led by Professor David Haddleton from the University of Warwick’s Department of Chemistry and Professor Tom Davis who is a Monash Warwick Professor based at the the Monash Institute of Pharmaceutical Sciences. Researchers discovered a way to translate the specific requirements of a product into its essential molecular structure.
Enacting the same process from which we get emulsion paint and glue, complex polymers can be tailor-made, with producers able to write into the code – essentially, the DNA – of a molecule the exact properties needed for the final product (weight, strength, shape, size etc).
This will give commercial producers greater control than ever before over the design of their products by using their existing infrastructure with a simple modification.
Controlled polymerisation has revolutionised academic polymer synthesis and traditionally uses one of two techniques: with sulfur or with copper. Both techniques have drawbacks, the former using toxic and noxious bad smelling thiols, and the latter using heavy metal and catalysts which add cost and complication to new materials.
Emulsion polymerisation is the process used to make emulsion paint and household glues, using water as solvent. The use of special macromonomers allows for a new process – sulfur-free RAFT emulsion polymerisation – which eliminates these problems. It allows complex polymers with good monomer sequence control to be synthesised in an aqueous environment, without the use of chemicals containing sulfur.
Professor Haddleton said the breakthrough will have many commercial uses.
“Sulfur-free RAFT allows the use of commercial processes to make sequence controlled polymers containing molecular information to be made using large and uncontaminated processes and I expect this to be of great interest to the polymer industry for use in nanomedicine to automotive applications.”
Professor Davis praised the contribution of two early career researchers working between the two Universities
“Co-authors, Dr NghiaTruong and Dr Athina Anastasaki, embraced the unique collaborative opportunities provided by the Alliance and as a result they made a major contribution to the planning and conduct of this research.”
Professor Davis is the inaugural Professor of Polymer Nanotechnology for the Monash Warwick Alliance, and is a Laureate Professor and Director of the ARC Centre of Excellence in Convergent Bio Nano Science & Technology