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Potato starch stabilized synthetic latexes

PhD ceremony:Mr K.R. Terpstra
When:March 20, 2015
Supervisors:prof. dr. F. (Francesco) Picchioni, prof. dr. ir. H.J. (Hero Jan) Heeres
Where:Academy building RUG
Faculty:Science and Engineering
Potato starch stabilized synthetic latexes

White glue, wood glue, school glue and PVA(c) glue are common names for a versatile adhesive with water-based polyvinyl acetate latex as its most important ingredient. The characteristics of this type of adhesive can be fine-tuned in the first place by changes in process settings during polymerization and secondly by changes in the composition by adding emulsifiers, protective colloids, plasticizers and/or anti-foaming agents.

Nowadays, commonly used additives are oil-based and the main problem with these components is that they might migrate out of the adhesive layer after the glue is applied. Because of their migratory properties, these additives might be detrimental to the environment and should be limited in their use as proposed by green chemistry and EU initiatives like Migrasives. As a result, there is a commercial interest to replace these oil-based and migration-sensitive ingredients by environmentally friendly ones derived from natural resources such as starch.

The current study focuses on the benefits and drawbacks of the use of a new type of starch (i.e. waxy potato starch) as formulation ingredient in PVA(c) glue.